3 * Copyright (c) 2000-2011 The libav developers.
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 #include "libavformat/avformat.h"
31 #include "libavdevice/avdevice.h"
32 #include "libswscale/swscale.h"
33 #include "libavresample/avresample.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/channel_layout.h"
36 #include "libavutil/parseutils.h"
37 #include "libavutil/samplefmt.h"
38 #include "libavutil/fifo.h"
39 #include "libavutil/intreadwrite.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/mathematics.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavutil/imgutils.h"
46 #include "libavutil/time.h"
47 #include "libavformat/os_support.h"
49 # include "libavfilter/avfilter.h"
50 # include "libavfilter/buffersrc.h"
51 # include "libavfilter/buffersink.h"
53 #if HAVE_SYS_RESOURCE_H
55 #include <sys/types.h>
56 #include <sys/resource.h>
57 #elif HAVE_GETPROCESSTIMES
60 #if HAVE_GETPROCESSMEMORYINFO
66 #include <sys/select.h>
78 #include "libavutil/avassert.h"
80 const char program_name[] = "avconv";
81 const int program_birth_year = 2000;
83 static FILE *vstats_file;
85 static int64_t video_size = 0;
86 static int64_t audio_size = 0;
87 static int64_t extra_size = 0;
88 static int nb_frames_dup = 0;
89 static int nb_frames_drop = 0;
94 /* signal to input threads that they should exit; set by the main thread */
95 static int transcoding_finished;
98 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
100 InputStream **input_streams = NULL;
101 int nb_input_streams = 0;
102 InputFile **input_files = NULL;
103 int nb_input_files = 0;
105 OutputStream **output_streams = NULL;
106 int nb_output_streams = 0;
107 OutputFile **output_files = NULL;
108 int nb_output_files = 0;
110 FilterGraph **filtergraphs;
113 static void term_exit(void)
115 av_log(NULL, AV_LOG_QUIET, "");
118 static volatile int received_sigterm = 0;
119 static volatile int received_nb_signals = 0;
122 sigterm_handler(int sig)
124 received_sigterm = sig;
125 received_nb_signals++;
129 static void term_init(void)
131 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
132 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
134 signal(SIGXCPU, sigterm_handler);
138 static int decode_interrupt_cb(void *ctx)
140 return received_nb_signals > 1;
143 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
145 static void avconv_cleanup(int ret)
149 for (i = 0; i < nb_filtergraphs; i++) {
150 avfilter_graph_free(&filtergraphs[i]->graph);
151 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
152 av_freep(&filtergraphs[i]->inputs[j]->name);
153 av_freep(&filtergraphs[i]->inputs[j]);
155 av_freep(&filtergraphs[i]->inputs);
156 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
157 av_freep(&filtergraphs[i]->outputs[j]->name);
158 av_freep(&filtergraphs[i]->outputs[j]);
160 av_freep(&filtergraphs[i]->outputs);
161 av_freep(&filtergraphs[i]->graph_desc);
162 av_freep(&filtergraphs[i]);
164 av_freep(&filtergraphs);
167 for (i = 0; i < nb_output_files; i++) {
168 AVFormatContext *s = output_files[i]->ctx;
169 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
171 avformat_free_context(s);
172 av_dict_free(&output_files[i]->opts);
173 av_freep(&output_files[i]);
175 for (i = 0; i < nb_output_streams; i++) {
176 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
178 AVBitStreamFilterContext *next = bsfc->next;
179 av_bitstream_filter_close(bsfc);
182 output_streams[i]->bitstream_filters = NULL;
183 avcodec_free_frame(&output_streams[i]->filtered_frame);
185 av_freep(&output_streams[i]->forced_keyframes);
186 av_freep(&output_streams[i]->avfilter);
187 av_freep(&output_streams[i]->logfile_prefix);
188 av_freep(&output_streams[i]);
190 for (i = 0; i < nb_input_files; i++) {
191 avformat_close_input(&input_files[i]->ctx);
192 av_freep(&input_files[i]);
194 for (i = 0; i < nb_input_streams; i++) {
195 av_frame_free(&input_streams[i]->decoded_frame);
196 av_frame_free(&input_streams[i]->filter_frame);
197 av_dict_free(&input_streams[i]->opts);
198 av_freep(&input_streams[i]->filters);
199 av_freep(&input_streams[i]);
204 av_free(vstats_filename);
206 av_freep(&input_streams);
207 av_freep(&input_files);
208 av_freep(&output_streams);
209 av_freep(&output_files);
213 avformat_network_deinit();
215 if (received_sigterm) {
216 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
217 (int) received_sigterm);
222 void assert_avoptions(AVDictionary *m)
224 AVDictionaryEntry *t;
225 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
226 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
231 static void abort_codec_experimental(AVCodec *c, int encoder)
233 const char *codec_string = encoder ? "encoder" : "decoder";
235 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
236 "results.\nAdd '-strict experimental' if you want to use it.\n",
237 codec_string, c->name);
238 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
239 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
240 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
241 codec_string, codec->name);
246 * Update the requested input sample format based on the output sample format.
247 * This is currently only used to request float output from decoders which
248 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
249 * Ideally this will be removed in the future when decoders do not do format
250 * conversion and only output in their native format.
252 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
255 /* if sample formats match or a decoder sample format has already been
256 requested, just return */
257 if (enc->sample_fmt == dec->sample_fmt ||
258 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
261 /* if decoder supports more than one output format */
262 if (dec_codec && dec_codec->sample_fmts &&
263 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
264 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
265 const enum AVSampleFormat *p;
266 int min_dec = INT_MAX, min_inc = INT_MAX;
267 enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
268 enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
270 /* find a matching sample format in the encoder */
271 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
272 if (*p == enc->sample_fmt) {
273 dec->request_sample_fmt = *p;
276 enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
277 enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
278 int fmt_diff = 32 * abs(dfmt - efmt);
279 if (av_sample_fmt_is_planar(*p) !=
280 av_sample_fmt_is_planar(enc->sample_fmt))
285 } else if (dfmt > efmt) {
286 if (fmt_diff < min_inc) {
291 if (fmt_diff < min_dec) {
299 /* if none match, provide the one that matches quality closest */
300 dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
304 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
306 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
307 AVCodecContext *avctx = ost->st->codec;
311 * Audio encoders may split the packets -- #frames in != #packets out.
312 * But there is no reordering, so we can limit the number of output packets
313 * by simply dropping them here.
314 * Counting encoded video frames needs to be done separately because of
315 * reordering, see do_video_out()
317 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
318 if (ost->frame_number >= ost->max_frames) {
326 AVPacket new_pkt = *pkt;
327 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
328 &new_pkt.data, &new_pkt.size,
329 pkt->data, pkt->size,
330 pkt->flags & AV_PKT_FLAG_KEY);
333 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
334 av_buffer_default_free, NULL, 0);
338 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
339 bsfc->filter->name, pkt->stream_index,
340 avctx->codec ? avctx->codec->name : "copy");
350 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
351 ost->last_mux_dts != AV_NOPTS_VALUE &&
352 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
353 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
354 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
355 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
357 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
360 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
361 "in incorrect timestamps in the output file.\n",
362 ost->last_mux_dts + 1);
363 pkt->dts = ost->last_mux_dts + 1;
364 if (pkt->pts != AV_NOPTS_VALUE)
365 pkt->pts = FFMAX(pkt->pts, pkt->dts);
367 ost->last_mux_dts = pkt->dts;
369 pkt->stream_index = ost->index;
370 ret = av_interleaved_write_frame(s, pkt);
372 print_error("av_interleaved_write_frame()", ret);
377 static int check_recording_time(OutputStream *ost)
379 OutputFile *of = output_files[ost->file_index];
381 if (of->recording_time != INT64_MAX &&
382 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
383 AV_TIME_BASE_Q) >= 0) {
390 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
393 AVCodecContext *enc = ost->st->codec;
397 av_init_packet(&pkt);
401 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
402 frame->pts = ost->sync_opts;
403 ost->sync_opts = frame->pts + frame->nb_samples;
405 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
406 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
411 if (pkt.pts != AV_NOPTS_VALUE)
412 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
413 if (pkt.dts != AV_NOPTS_VALUE)
414 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
415 if (pkt.duration > 0)
416 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
418 write_frame(s, &pkt, ost);
420 audio_size += pkt.size;
424 static void do_subtitle_out(AVFormatContext *s,
430 static uint8_t *subtitle_out = NULL;
431 int subtitle_out_max_size = 1024 * 1024;
432 int subtitle_out_size, nb, i;
436 if (pts == AV_NOPTS_VALUE) {
437 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
443 enc = ost->st->codec;
446 subtitle_out = av_malloc(subtitle_out_max_size);
449 /* Note: DVB subtitle need one packet to draw them and one other
450 packet to clear them */
451 /* XXX: signal it in the codec context ? */
452 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
457 for (i = 0; i < nb; i++) {
458 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
459 if (!check_recording_time(ost))
462 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
463 // start_display_time is required to be 0
464 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
465 sub->end_display_time -= sub->start_display_time;
466 sub->start_display_time = 0;
467 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
468 subtitle_out_max_size, sub);
469 if (subtitle_out_size < 0) {
470 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
474 av_init_packet(&pkt);
475 pkt.data = subtitle_out;
476 pkt.size = subtitle_out_size;
477 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
478 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
479 /* XXX: the pts correction is handled here. Maybe handling
480 it in the codec would be better */
482 pkt.pts += 90 * sub->start_display_time;
484 pkt.pts += 90 * sub->end_display_time;
486 write_frame(s, &pkt, ost);
490 static void do_video_out(AVFormatContext *s,
495 int ret, format_video_sync;
497 AVCodecContext *enc = ost->st->codec;
501 format_video_sync = video_sync_method;
502 if (format_video_sync == VSYNC_AUTO)
503 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
504 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
505 if (format_video_sync != VSYNC_PASSTHROUGH &&
507 in_picture->pts != AV_NOPTS_VALUE &&
508 in_picture->pts < ost->sync_opts) {
510 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
514 if (in_picture->pts == AV_NOPTS_VALUE)
515 in_picture->pts = ost->sync_opts;
516 ost->sync_opts = in_picture->pts;
519 if (!ost->frame_number)
520 ost->first_pts = in_picture->pts;
522 av_init_packet(&pkt);
526 if (ost->frame_number >= ost->max_frames)
529 if (s->oformat->flags & AVFMT_RAWPICTURE &&
530 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
531 /* raw pictures are written as AVPicture structure to
532 avoid any copies. We support temporarily the older
534 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
535 enc->coded_frame->top_field_first = in_picture->top_field_first;
536 pkt.data = (uint8_t *)in_picture;
537 pkt.size = sizeof(AVPicture);
538 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
539 pkt.flags |= AV_PKT_FLAG_KEY;
541 write_frame(s, &pkt, ost);
545 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
546 ost->top_field_first >= 0)
547 in_picture->top_field_first = !!ost->top_field_first;
549 in_picture->quality = ost->st->codec->global_quality;
550 if (!enc->me_threshold)
551 in_picture->pict_type = 0;
552 if (ost->forced_kf_index < ost->forced_kf_count &&
553 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
554 in_picture->pict_type = AV_PICTURE_TYPE_I;
555 ost->forced_kf_index++;
557 ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
559 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
564 if (pkt.pts != AV_NOPTS_VALUE)
565 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
566 if (pkt.dts != AV_NOPTS_VALUE)
567 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
569 write_frame(s, &pkt, ost);
570 *frame_size = pkt.size;
571 video_size += pkt.size;
573 /* if two pass, output log */
574 if (ost->logfile && enc->stats_out) {
575 fprintf(ost->logfile, "%s", enc->stats_out);
581 * For video, number of frames in == number of packets out.
582 * But there may be reordering, so we can't throw away frames on encoder
583 * flush, we need to limit them here, before they go into encoder.
588 static double psnr(double d)
590 return -10.0 * log(d) / log(10.0);
593 static void do_video_stats(OutputStream *ost, int frame_size)
597 double ti1, bitrate, avg_bitrate;
599 /* this is executed just the first time do_video_stats is called */
601 vstats_file = fopen(vstats_filename, "w");
608 enc = ost->st->codec;
609 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
610 frame_number = ost->frame_number;
611 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
612 if (enc->flags&CODEC_FLAG_PSNR)
613 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
615 fprintf(vstats_file,"f_size= %6d ", frame_size);
616 /* compute pts value */
617 ti1 = ost->sync_opts * av_q2d(enc->time_base);
621 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
622 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
623 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
624 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
625 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
630 * Read one frame for lavfi output for ost and encode it.
632 static int poll_filter(OutputStream *ost)
634 OutputFile *of = output_files[ost->file_index];
635 AVFrame *filtered_frame = NULL;
638 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
639 return AVERROR(ENOMEM);
641 avcodec_get_frame_defaults(ost->filtered_frame);
642 filtered_frame = ost->filtered_frame;
644 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
645 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
646 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
647 ost->st->codec->frame_size);
649 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
654 if (filtered_frame->pts != AV_NOPTS_VALUE) {
655 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
656 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
657 ost->filter->filter->inputs[0]->time_base,
658 ost->st->codec->time_base) -
659 av_rescale_q(start_time,
661 ost->st->codec->time_base);
664 switch (ost->filter->filter->inputs[0]->type) {
665 case AVMEDIA_TYPE_VIDEO:
666 if (!ost->frame_aspect_ratio)
667 ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
669 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
670 if (vstats_filename && frame_size)
671 do_video_stats(ost, frame_size);
673 case AVMEDIA_TYPE_AUDIO:
674 do_audio_out(of->ctx, ost, filtered_frame);
677 // TODO support subtitle filters
681 av_frame_unref(filtered_frame);
687 * Read as many frames from possible from lavfi and encode them.
689 * Always read from the active stream with the lowest timestamp. If no frames
690 * are available for it then return EAGAIN and wait for more input. This way we
691 * can use lavfi sources that generate unlimited amount of frames without memory
694 static int poll_filters(void)
698 while (ret >= 0 && !received_sigterm) {
699 OutputStream *ost = NULL;
700 int64_t min_pts = INT64_MAX;
702 /* choose output stream with the lowest timestamp */
703 for (i = 0; i < nb_output_streams; i++) {
704 int64_t pts = output_streams[i]->sync_opts;
706 if (!output_streams[i]->filter || output_streams[i]->finished)
709 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
713 ost = output_streams[i];
720 ret = poll_filter(ost);
722 if (ret == AVERROR_EOF) {
723 OutputFile *of = output_files[ost->file_index];
728 for (j = 0; j < of->ctx->nb_streams; j++)
729 output_streams[of->ost_index + j]->finished = 1;
733 } else if (ret == AVERROR(EAGAIN))
740 static void print_report(int is_last_report, int64_t timer_start)
747 int frame_number, vid, i;
748 double bitrate, ti1, pts;
749 static int64_t last_time = -1;
750 static int qp_histogram[52];
752 if (!print_stats && !is_last_report)
755 if (!is_last_report) {
757 /* display the report every 0.5 seconds */
758 cur_time = av_gettime();
759 if (last_time == -1) {
760 last_time = cur_time;
763 if ((cur_time - last_time) < 500000)
765 last_time = cur_time;
769 oc = output_files[0]->ctx;
771 total_size = avio_size(oc->pb);
772 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
773 total_size = avio_tell(oc->pb);
774 if (total_size < 0) {
776 av_strerror(total_size, errbuf, sizeof(errbuf));
777 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
778 "avio_tell() failed: %s\n", errbuf);
785 for (i = 0; i < nb_output_streams; i++) {
787 ost = output_streams[i];
788 enc = ost->st->codec;
789 if (!ost->stream_copy && enc->coded_frame)
790 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
791 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
792 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
794 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
795 float t = (av_gettime() - timer_start) / 1000000.0;
797 frame_number = ost->frame_number;
798 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
799 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
801 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
805 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
807 for (j = 0; j < 32; j++)
808 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
810 if (enc->flags&CODEC_FLAG_PSNR) {
812 double error, error_sum = 0;
813 double scale, scale_sum = 0;
814 char type[3] = { 'Y','U','V' };
815 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
816 for (j = 0; j < 3; j++) {
817 if (is_last_report) {
818 error = enc->error[j];
819 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
821 error = enc->coded_frame->error[j];
822 scale = enc->width * enc->height * 255.0 * 255.0;
828 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
830 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
834 /* compute min output value */
835 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
836 if ((pts < ti1) && (pts > 0))
842 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
844 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
845 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
846 (double)total_size / 1024, ti1, bitrate);
848 if (nb_frames_dup || nb_frames_drop)
849 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
850 nb_frames_dup, nb_frames_drop);
852 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
856 if (is_last_report) {
857 int64_t raw= audio_size + video_size + extra_size;
858 av_log(NULL, AV_LOG_INFO, "\n");
859 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
863 100.0 * (total_size - raw) / raw
868 static void flush_encoders(void)
872 for (i = 0; i < nb_output_streams; i++) {
873 OutputStream *ost = output_streams[i];
874 AVCodecContext *enc = ost->st->codec;
875 AVFormatContext *os = output_files[ost->file_index]->ctx;
876 int stop_encoding = 0;
878 if (!ost->encoding_needed)
881 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
883 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
887 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
891 switch (ost->st->codec->codec_type) {
892 case AVMEDIA_TYPE_AUDIO:
893 encode = avcodec_encode_audio2;
897 case AVMEDIA_TYPE_VIDEO:
898 encode = avcodec_encode_video2;
909 av_init_packet(&pkt);
913 ret = encode(enc, &pkt, NULL, &got_packet);
915 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
919 if (ost->logfile && enc->stats_out) {
920 fprintf(ost->logfile, "%s", enc->stats_out);
926 if (pkt.pts != AV_NOPTS_VALUE)
927 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
928 if (pkt.dts != AV_NOPTS_VALUE)
929 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
930 if (pkt.duration > 0)
931 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
932 write_frame(os, &pkt, ost);
942 * Check whether a packet from ist should be written into ost at this time
944 static int check_output_constraints(InputStream *ist, OutputStream *ost)
946 OutputFile *of = output_files[ost->file_index];
947 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
949 if (ost->source_index != ist_index)
952 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
958 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
960 OutputFile *of = output_files[ost->file_index];
961 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
962 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
965 av_init_packet(&opkt);
967 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
968 !ost->copy_initial_nonkeyframes)
971 if (of->recording_time != INT64_MAX &&
972 ist->last_dts >= of->recording_time + start_time) {
977 /* force the input stream PTS */
978 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
979 audio_size += pkt->size;
980 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
981 video_size += pkt->size;
985 if (pkt->pts != AV_NOPTS_VALUE)
986 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
988 opkt.pts = AV_NOPTS_VALUE;
990 if (pkt->dts == AV_NOPTS_VALUE)
991 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
993 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
994 opkt.dts -= ost_tb_start_time;
996 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
997 opkt.flags = pkt->flags;
999 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1000 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1001 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1002 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1003 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1005 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1006 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1011 opkt.data = pkt->data;
1012 opkt.size = pkt->size;
1015 write_frame(of->ctx, &opkt, ost);
1016 ost->st->codec->frame_number++;
1019 int guess_input_channel_layout(InputStream *ist)
1021 AVCodecContext *dec = ist->st->codec;
1023 if (!dec->channel_layout) {
1024 char layout_name[256];
1026 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1027 if (!dec->channel_layout)
1029 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1030 dec->channels, dec->channel_layout);
1031 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1032 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1037 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1039 AVFrame *decoded_frame, *f;
1040 AVCodecContext *avctx = ist->st->codec;
1041 int i, ret, err = 0, resample_changed;
1043 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1044 return AVERROR(ENOMEM);
1045 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1046 return AVERROR(ENOMEM);
1047 decoded_frame = ist->decoded_frame;
1049 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1050 if (!*got_output || ret < 0) {
1052 for (i = 0; i < ist->nb_filters; i++)
1053 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1058 /* if the decoder provides a pts, use it instead of the last packet pts.
1059 the decoder could be delaying output by a packet or more. */
1060 if (decoded_frame->pts != AV_NOPTS_VALUE)
1061 ist->next_dts = decoded_frame->pts;
1062 else if (pkt->pts != AV_NOPTS_VALUE) {
1063 decoded_frame->pts = pkt->pts;
1064 pkt->pts = AV_NOPTS_VALUE;
1067 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1068 ist->resample_channels != avctx->channels ||
1069 ist->resample_channel_layout != decoded_frame->channel_layout ||
1070 ist->resample_sample_rate != decoded_frame->sample_rate;
1071 if (resample_changed) {
1072 char layout1[64], layout2[64];
1074 if (!guess_input_channel_layout(ist)) {
1075 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1076 "layout for Input Stream #%d.%d\n", ist->file_index,
1080 decoded_frame->channel_layout = avctx->channel_layout;
1082 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1083 ist->resample_channel_layout);
1084 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1085 decoded_frame->channel_layout);
1087 av_log(NULL, AV_LOG_INFO,
1088 "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1089 ist->file_index, ist->st->index,
1090 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1091 ist->resample_channels, layout1,
1092 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1093 avctx->channels, layout2);
1095 ist->resample_sample_fmt = decoded_frame->format;
1096 ist->resample_sample_rate = decoded_frame->sample_rate;
1097 ist->resample_channel_layout = decoded_frame->channel_layout;
1098 ist->resample_channels = avctx->channels;
1100 for (i = 0; i < nb_filtergraphs; i++)
1101 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1102 configure_filtergraph(filtergraphs[i]) < 0) {
1103 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1108 if (decoded_frame->pts != AV_NOPTS_VALUE)
1109 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1111 (AVRational){1, ist->st->codec->sample_rate});
1112 for (i = 0; i < ist->nb_filters; i++) {
1113 if (i < ist->nb_filters - 1) {
1114 f = ist->filter_frame;
1115 err = av_frame_ref(f, decoded_frame);
1121 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1126 av_frame_unref(ist->filter_frame);
1127 av_frame_unref(decoded_frame);
1128 return err < 0 ? err : ret;
1131 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1133 AVFrame *decoded_frame, *f;
1134 void *buffer_to_free = NULL;
1135 int i, ret = 0, err = 0, resample_changed;
1137 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1138 return AVERROR(ENOMEM);
1139 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1140 return AVERROR(ENOMEM);
1141 decoded_frame = ist->decoded_frame;
1143 ret = avcodec_decode_video2(ist->st->codec,
1144 decoded_frame, got_output, pkt);
1145 if (!*got_output || ret < 0) {
1147 for (i = 0; i < ist->nb_filters; i++)
1148 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1153 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1154 decoded_frame->pkt_dts);
1157 if (ist->st->sample_aspect_ratio.num)
1158 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1160 resample_changed = ist->resample_width != decoded_frame->width ||
1161 ist->resample_height != decoded_frame->height ||
1162 ist->resample_pix_fmt != decoded_frame->format;
1163 if (resample_changed) {
1164 av_log(NULL, AV_LOG_INFO,
1165 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1166 ist->file_index, ist->st->index,
1167 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1168 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1170 ret = poll_filters();
1171 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1172 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1174 ist->resample_width = decoded_frame->width;
1175 ist->resample_height = decoded_frame->height;
1176 ist->resample_pix_fmt = decoded_frame->format;
1178 for (i = 0; i < nb_filtergraphs; i++)
1179 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1180 configure_filtergraph(filtergraphs[i]) < 0) {
1181 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1186 for (i = 0; i < ist->nb_filters; i++) {
1187 if (i < ist->nb_filters - 1) {
1188 f = ist->filter_frame;
1189 err = av_frame_ref(f, decoded_frame);
1195 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1200 av_frame_unref(ist->filter_frame);
1201 av_frame_unref(decoded_frame);
1202 av_free(buffer_to_free);
1203 return err < 0 ? err : ret;
1206 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1208 AVSubtitle subtitle;
1209 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1210 &subtitle, got_output, pkt);
1216 for (i = 0; i < nb_output_streams; i++) {
1217 OutputStream *ost = output_streams[i];
1219 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1222 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1225 avsubtitle_free(&subtitle);
1229 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1230 static int output_packet(InputStream *ist, const AVPacket *pkt)
1236 if (ist->next_dts == AV_NOPTS_VALUE)
1237 ist->next_dts = ist->last_dts;
1241 av_init_packet(&avpkt);
1249 if (pkt->dts != AV_NOPTS_VALUE)
1250 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1252 // while we have more to decode or while the decoder did output something on EOF
1253 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1257 ist->last_dts = ist->next_dts;
1259 if (avpkt.size && avpkt.size != pkt->size) {
1260 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1261 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1262 ist->showed_multi_packet_warning = 1;
1265 switch (ist->st->codec->codec_type) {
1266 case AVMEDIA_TYPE_AUDIO:
1267 ret = decode_audio (ist, &avpkt, &got_output);
1269 case AVMEDIA_TYPE_VIDEO:
1270 ret = decode_video (ist, &avpkt, &got_output);
1272 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1273 else if (ist->st->avg_frame_rate.num)
1274 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1276 else if (ist->st->codec->time_base.num != 0) {
1277 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1278 ist->st->codec->ticks_per_frame;
1279 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1282 case AVMEDIA_TYPE_SUBTITLE:
1283 ret = transcode_subtitles(ist, &avpkt, &got_output);
1291 // touch data and size only if not EOF
1301 /* handle stream copy */
1302 if (!ist->decoding_needed) {
1303 ist->last_dts = ist->next_dts;
1304 switch (ist->st->codec->codec_type) {
1305 case AVMEDIA_TYPE_AUDIO:
1306 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1307 ist->st->codec->sample_rate;
1309 case AVMEDIA_TYPE_VIDEO:
1310 if (ist->st->codec->time_base.num != 0) {
1311 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1312 ist->next_dts += ((int64_t)AV_TIME_BASE *
1313 ist->st->codec->time_base.num * ticks) /
1314 ist->st->codec->time_base.den;
1319 for (i = 0; pkt && i < nb_output_streams; i++) {
1320 OutputStream *ost = output_streams[i];
1322 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1325 do_streamcopy(ist, ost, pkt);
1331 static void print_sdp(void)
1335 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1339 for (i = 0; i < nb_output_files; i++)
1340 avc[i] = output_files[i]->ctx;
1342 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1343 printf("SDP:\n%s\n", sdp);
1348 static int init_input_stream(int ist_index, char *error, int error_len)
1351 InputStream *ist = input_streams[ist_index];
1352 if (ist->decoding_needed) {
1353 AVCodec *codec = ist->dec;
1355 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1356 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1357 return AVERROR(EINVAL);
1360 /* update requested sample format for the decoder based on the
1361 corresponding encoder sample format */
1362 for (i = 0; i < nb_output_streams; i++) {
1363 OutputStream *ost = output_streams[i];
1364 if (ost->source_index == ist_index) {
1365 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1370 av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1372 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1373 av_dict_set(&ist->opts, "threads", "auto", 0);
1374 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1376 if (ret == AVERROR_EXPERIMENTAL)
1377 abort_codec_experimental(codec, 0);
1379 av_strerror(ret, errbuf, sizeof(errbuf));
1381 snprintf(error, error_len,
1382 "Error while opening decoder for input stream "
1384 ist->file_index, ist->st->index, errbuf);
1387 assert_avoptions(ist->opts);
1390 ist->last_dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1391 ist->next_dts = AV_NOPTS_VALUE;
1392 init_pts_correction(&ist->pts_ctx);
1398 static InputStream *get_input_stream(OutputStream *ost)
1400 if (ost->source_index >= 0)
1401 return input_streams[ost->source_index];
1404 FilterGraph *fg = ost->filter->graph;
1407 for (i = 0; i < fg->nb_inputs; i++)
1408 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1409 return fg->inputs[i]->ist;
1415 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1416 AVCodecContext *avctx)
1422 for (p = kf; *p; p++)
1425 ost->forced_kf_count = n;
1426 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1427 if (!ost->forced_kf_pts) {
1428 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1433 for (i = 0; i < n; i++) {
1434 char *next = strchr(p, ',');
1439 t = parse_time_or_die("force_key_frames", p, 1);
1440 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1446 static int transcode_init(void)
1448 int ret = 0, i, j, k;
1449 AVFormatContext *oc;
1450 AVCodecContext *codec;
1456 /* init framerate emulation */
1457 for (i = 0; i < nb_input_files; i++) {
1458 InputFile *ifile = input_files[i];
1459 if (ifile->rate_emu)
1460 for (j = 0; j < ifile->nb_streams; j++)
1461 input_streams[j + ifile->ist_index]->start = av_gettime();
1464 /* output stream init */
1465 for (i = 0; i < nb_output_files; i++) {
1466 oc = output_files[i]->ctx;
1467 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1468 av_dump_format(oc, i, oc->filename, 1);
1469 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1470 return AVERROR(EINVAL);
1474 /* init complex filtergraphs */
1475 for (i = 0; i < nb_filtergraphs; i++)
1476 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1479 /* for each output stream, we compute the right encoding parameters */
1480 for (i = 0; i < nb_output_streams; i++) {
1481 AVCodecContext *icodec = NULL;
1482 ost = output_streams[i];
1483 oc = output_files[ost->file_index]->ctx;
1484 ist = get_input_stream(ost);
1486 if (ost->attachment_filename)
1489 codec = ost->st->codec;
1492 icodec = ist->st->codec;
1494 ost->st->disposition = ist->st->disposition;
1495 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1496 codec->chroma_sample_location = icodec->chroma_sample_location;
1499 if (ost->stream_copy) {
1501 uint64_t extra_size;
1503 av_assert0(ist && !ost->filter);
1505 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1507 if (extra_size > INT_MAX) {
1508 return AVERROR(EINVAL);
1511 /* if stream_copy is selected, no need to decode or encode */
1512 codec->codec_id = icodec->codec_id;
1513 codec->codec_type = icodec->codec_type;
1515 if (!codec->codec_tag) {
1516 if (!oc->oformat->codec_tag ||
1517 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1518 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1519 codec->codec_tag = icodec->codec_tag;
1522 codec->bit_rate = icodec->bit_rate;
1523 codec->rc_max_rate = icodec->rc_max_rate;
1524 codec->rc_buffer_size = icodec->rc_buffer_size;
1525 codec->field_order = icodec->field_order;
1526 codec->extradata = av_mallocz(extra_size);
1527 if (!codec->extradata) {
1528 return AVERROR(ENOMEM);
1530 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1531 codec->extradata_size = icodec->extradata_size;
1533 codec->time_base = icodec->time_base;
1534 codec->time_base.num *= icodec->ticks_per_frame;
1535 av_reduce(&codec->time_base.num, &codec->time_base.den,
1536 codec->time_base.num, codec->time_base.den, INT_MAX);
1538 codec->time_base = ist->st->time_base;
1540 switch (codec->codec_type) {
1541 case AVMEDIA_TYPE_AUDIO:
1542 if (audio_volume != 256) {
1543 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1546 codec->channel_layout = icodec->channel_layout;
1547 codec->sample_rate = icodec->sample_rate;
1548 codec->channels = icodec->channels;
1549 codec->frame_size = icodec->frame_size;
1550 codec->audio_service_type = icodec->audio_service_type;
1551 codec->block_align = icodec->block_align;
1553 case AVMEDIA_TYPE_VIDEO:
1554 codec->pix_fmt = icodec->pix_fmt;
1555 codec->width = icodec->width;
1556 codec->height = icodec->height;
1557 codec->has_b_frames = icodec->has_b_frames;
1558 if (ost->frame_aspect_ratio)
1559 sar = av_d2q(ost->frame_aspect_ratio * codec->height / codec->width, 255);
1560 else if (ist->st->sample_aspect_ratio.num)
1561 sar = ist->st->sample_aspect_ratio;
1563 sar = icodec->sample_aspect_ratio;
1564 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
1566 case AVMEDIA_TYPE_SUBTITLE:
1567 codec->width = icodec->width;
1568 codec->height = icodec->height;
1570 case AVMEDIA_TYPE_DATA:
1571 case AVMEDIA_TYPE_ATTACHMENT:
1578 /* should only happen when a default codec is not present. */
1579 snprintf(error, sizeof(error), "Automatic encoder selection "
1580 "failed for output stream #%d:%d. Default encoder for "
1581 "format %s is probably disabled. Please choose an "
1582 "encoder manually.\n", ost->file_index, ost->index,
1584 ret = AVERROR(EINVAL);
1589 ist->decoding_needed = 1;
1590 ost->encoding_needed = 1;
1593 * We want CFR output if and only if one of those is true:
1594 * 1) user specified output framerate with -r
1595 * 2) user specified -vsync cfr
1596 * 3) output format is CFR and the user didn't force vsync to
1597 * something else than CFR
1599 * in such a case, set ost->frame_rate
1601 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1602 !ost->frame_rate.num && ist &&
1603 (video_sync_method == VSYNC_CFR ||
1604 (video_sync_method == VSYNC_AUTO &&
1605 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1606 ost->frame_rate = ist->framerate.num ? ist->framerate :
1607 ist->st->avg_frame_rate.num ?
1608 ist->st->avg_frame_rate :
1609 (AVRational){25, 1};
1611 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1612 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1613 ost->frame_rate = ost->enc->supported_framerates[idx];
1618 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1619 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1621 fg = init_simple_filtergraph(ist, ost);
1622 if (configure_filtergraph(fg)) {
1623 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1628 switch (codec->codec_type) {
1629 case AVMEDIA_TYPE_AUDIO:
1630 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1631 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1632 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1633 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1634 codec->time_base = (AVRational){ 1, codec->sample_rate };
1636 case AVMEDIA_TYPE_VIDEO:
1637 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1639 codec->width = ost->filter->filter->inputs[0]->w;
1640 codec->height = ost->filter->filter->inputs[0]->h;
1641 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1642 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1643 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1644 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1645 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1648 (codec->width != icodec->width ||
1649 codec->height != icodec->height ||
1650 codec->pix_fmt != icodec->pix_fmt)) {
1651 codec->bits_per_raw_sample = 0;
1654 if (ost->forced_keyframes)
1655 parse_forced_key_frames(ost->forced_keyframes, ost,
1658 case AVMEDIA_TYPE_SUBTITLE:
1659 codec->time_base = (AVRational){1, 1000};
1666 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1667 char logfilename[1024];
1670 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1671 ost->logfile_prefix ? ost->logfile_prefix :
1672 DEFAULT_PASS_LOGFILENAME_PREFIX,
1674 if (!strcmp(ost->enc->name, "libx264")) {
1675 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1677 if (codec->flags & CODEC_FLAG_PASS1) {
1678 f = fopen(logfilename, "wb");
1680 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1681 logfilename, strerror(errno));
1687 size_t logbuffer_size;
1688 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1689 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1693 codec->stats_in = logbuffer;
1700 /* open each encoder */
1701 for (i = 0; i < nb_output_streams; i++) {
1702 ost = output_streams[i];
1703 if (ost->encoding_needed) {
1704 AVCodec *codec = ost->enc;
1705 AVCodecContext *dec = NULL;
1707 if ((ist = get_input_stream(ost)))
1708 dec = ist->st->codec;
1709 if (dec && dec->subtitle_header) {
1710 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1711 if (!ost->st->codec->subtitle_header) {
1712 ret = AVERROR(ENOMEM);
1715 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1716 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1718 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1719 av_dict_set(&ost->opts, "threads", "auto", 0);
1720 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1721 if (ret == AVERROR_EXPERIMENTAL)
1722 abort_codec_experimental(codec, 1);
1723 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1724 ost->file_index, ost->index);
1727 assert_avoptions(ost->opts);
1728 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1729 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1730 "It takes bits/s as argument, not kbits/s\n");
1731 extra_size += ost->st->codec->extradata_size;
1733 if (ost->st->codec->me_threshold)
1734 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
1736 av_opt_set_dict(ost->st->codec, &ost->opts);
1740 /* init input streams */
1741 for (i = 0; i < nb_input_streams; i++)
1742 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1745 /* discard unused programs */
1746 for (i = 0; i < nb_input_files; i++) {
1747 InputFile *ifile = input_files[i];
1748 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1749 AVProgram *p = ifile->ctx->programs[j];
1750 int discard = AVDISCARD_ALL;
1752 for (k = 0; k < p->nb_stream_indexes; k++)
1753 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1754 discard = AVDISCARD_DEFAULT;
1757 p->discard = discard;
1761 /* open files and write file headers */
1762 for (i = 0; i < nb_output_files; i++) {
1763 oc = output_files[i]->ctx;
1764 oc->interrupt_callback = int_cb;
1765 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1767 av_strerror(ret, errbuf, sizeof(errbuf));
1768 snprintf(error, sizeof(error),
1769 "Could not write header for output file #%d "
1770 "(incorrect codec parameters ?): %s",
1772 ret = AVERROR(EINVAL);
1775 assert_avoptions(output_files[i]->opts);
1776 if (strcmp(oc->oformat->name, "rtp")) {
1782 /* dump the file output parameters - cannot be done before in case
1784 for (i = 0; i < nb_output_files; i++) {
1785 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1788 /* dump the stream mapping */
1789 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1790 for (i = 0; i < nb_input_streams; i++) {
1791 ist = input_streams[i];
1793 for (j = 0; j < ist->nb_filters; j++) {
1794 if (ist->filters[j]->graph->graph_desc) {
1795 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1796 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1797 ist->filters[j]->name);
1798 if (nb_filtergraphs > 1)
1799 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1800 av_log(NULL, AV_LOG_INFO, "\n");
1805 for (i = 0; i < nb_output_streams; i++) {
1806 ost = output_streams[i];
1808 if (ost->attachment_filename) {
1809 /* an attached file */
1810 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1811 ost->attachment_filename, ost->file_index, ost->index);
1815 if (ost->filter && ost->filter->graph->graph_desc) {
1816 /* output from a complex graph */
1817 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1818 if (nb_filtergraphs > 1)
1819 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1821 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1822 ost->index, ost->enc ? ost->enc->name : "?");
1826 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1827 input_streams[ost->source_index]->file_index,
1828 input_streams[ost->source_index]->st->index,
1831 if (ost->sync_ist != input_streams[ost->source_index])
1832 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1833 ost->sync_ist->file_index,
1834 ost->sync_ist->st->index);
1835 if (ost->stream_copy)
1836 av_log(NULL, AV_LOG_INFO, " (copy)");
1838 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1839 input_streams[ost->source_index]->dec->name : "?",
1840 ost->enc ? ost->enc->name : "?");
1841 av_log(NULL, AV_LOG_INFO, "\n");
1845 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1856 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
1857 static int need_output(void)
1861 for (i = 0; i < nb_output_streams; i++) {
1862 OutputStream *ost = output_streams[i];
1863 OutputFile *of = output_files[ost->file_index];
1864 AVFormatContext *os = output_files[ost->file_index]->ctx;
1866 if (ost->finished ||
1867 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1869 if (ost->frame_number >= ost->max_frames) {
1871 for (j = 0; j < of->ctx->nb_streams; j++)
1872 output_streams[of->ost_index + j]->finished = 1;
1882 static InputFile *select_input_file(void)
1884 InputFile *ifile = NULL;
1885 int64_t ipts_min = INT64_MAX;
1888 for (i = 0; i < nb_input_streams; i++) {
1889 InputStream *ist = input_streams[i];
1890 int64_t ipts = ist->last_dts;
1892 if (ist->discard || input_files[ist->file_index]->eagain)
1894 if (!input_files[ist->file_index]->eof_reached) {
1895 if (ipts < ipts_min) {
1897 ifile = input_files[ist->file_index];
1906 static void *input_thread(void *arg)
1911 while (!transcoding_finished && ret >= 0) {
1913 ret = av_read_frame(f->ctx, &pkt);
1915 if (ret == AVERROR(EAGAIN)) {
1922 pthread_mutex_lock(&f->fifo_lock);
1923 while (!av_fifo_space(f->fifo))
1924 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
1926 av_dup_packet(&pkt);
1927 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
1929 pthread_mutex_unlock(&f->fifo_lock);
1936 static void free_input_threads(void)
1940 if (nb_input_files == 1)
1943 transcoding_finished = 1;
1945 for (i = 0; i < nb_input_files; i++) {
1946 InputFile *f = input_files[i];
1949 if (!f->fifo || f->joined)
1952 pthread_mutex_lock(&f->fifo_lock);
1953 while (av_fifo_size(f->fifo)) {
1954 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1955 av_free_packet(&pkt);
1957 pthread_cond_signal(&f->fifo_cond);
1958 pthread_mutex_unlock(&f->fifo_lock);
1960 pthread_join(f->thread, NULL);
1963 while (av_fifo_size(f->fifo)) {
1964 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1965 av_free_packet(&pkt);
1967 av_fifo_free(f->fifo);
1971 static int init_input_threads(void)
1975 if (nb_input_files == 1)
1978 for (i = 0; i < nb_input_files; i++) {
1979 InputFile *f = input_files[i];
1981 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
1982 return AVERROR(ENOMEM);
1984 pthread_mutex_init(&f->fifo_lock, NULL);
1985 pthread_cond_init (&f->fifo_cond, NULL);
1987 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
1988 return AVERROR(ret);
1993 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
1997 pthread_mutex_lock(&f->fifo_lock);
1999 if (av_fifo_size(f->fifo)) {
2000 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2001 pthread_cond_signal(&f->fifo_cond);
2006 ret = AVERROR(EAGAIN);
2009 pthread_mutex_unlock(&f->fifo_lock);
2015 static int get_input_packet(InputFile *f, AVPacket *pkt)
2019 for (i = 0; i < f->nb_streams; i++) {
2020 InputStream *ist = input_streams[f->ist_index + i];
2021 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2022 int64_t now = av_gettime() - ist->start;
2024 return AVERROR(EAGAIN);
2029 if (nb_input_files > 1)
2030 return get_input_packet_mt(f, pkt);
2032 return av_read_frame(f->ctx, pkt);
2035 static int got_eagain(void)
2038 for (i = 0; i < nb_input_files; i++)
2039 if (input_files[i]->eagain)
2044 static void reset_eagain(void)
2047 for (i = 0; i < nb_input_files; i++)
2048 input_files[i]->eagain = 0;
2052 * Read one packet from an input file and send it for
2053 * - decoding -> lavfi (audio/video)
2054 * - decoding -> encoding -> muxing (subtitles)
2055 * - muxing (streamcopy)
2058 * - 0 -- one packet was read and processed
2059 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2060 * this function should be called again
2061 * - AVERROR_EOF -- this function should not be called again
2063 static int process_input(void)
2066 AVFormatContext *is;
2071 /* select the stream that we must read now */
2072 ifile = select_input_file();
2073 /* if none, if is finished */
2078 return AVERROR(EAGAIN);
2080 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2085 ret = get_input_packet(ifile, &pkt);
2087 if (ret == AVERROR(EAGAIN)) {
2092 if (ret != AVERROR_EOF) {
2093 print_error(is->filename, ret);
2097 ifile->eof_reached = 1;
2099 for (i = 0; i < ifile->nb_streams; i++) {
2100 ist = input_streams[ifile->ist_index + i];
2101 if (ist->decoding_needed)
2102 output_packet(ist, NULL);
2104 /* mark all outputs that don't go through lavfi as finished */
2105 for (j = 0; j < nb_output_streams; j++) {
2106 OutputStream *ost = output_streams[j];
2108 if (ost->source_index == ifile->ist_index + i &&
2109 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2114 return AVERROR(EAGAIN);
2120 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2121 is->streams[pkt.stream_index]);
2123 /* the following test is needed in case new streams appear
2124 dynamically in stream : we ignore them */
2125 if (pkt.stream_index >= ifile->nb_streams)
2126 goto discard_packet;
2128 ist = input_streams[ifile->ist_index + pkt.stream_index];
2130 goto discard_packet;
2132 if (pkt.dts != AV_NOPTS_VALUE)
2133 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2134 if (pkt.pts != AV_NOPTS_VALUE)
2135 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2137 if (pkt.pts != AV_NOPTS_VALUE)
2138 pkt.pts *= ist->ts_scale;
2139 if (pkt.dts != AV_NOPTS_VALUE)
2140 pkt.dts *= ist->ts_scale;
2142 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2143 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2144 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2145 int64_t delta = pkt_dts - ist->next_dts;
2147 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2148 ifile->ts_offset -= delta;
2149 av_log(NULL, AV_LOG_DEBUG,
2150 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2151 delta, ifile->ts_offset);
2152 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2153 if (pkt.pts != AV_NOPTS_VALUE)
2154 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2158 ret = output_packet(ist, &pkt);
2160 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2161 ist->file_index, ist->st->index);
2167 av_free_packet(&pkt);
2173 * The following code is the main loop of the file converter
2175 static int transcode(void)
2177 int ret, i, need_input = 1;
2178 AVFormatContext *os;
2181 int64_t timer_start;
2183 ret = transcode_init();
2187 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2190 timer_start = av_gettime();
2193 if ((ret = init_input_threads()) < 0)
2197 while (!received_sigterm) {
2198 /* check if there's any stream where output is still needed */
2199 if (!need_output()) {
2200 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2204 /* read and process one input packet if needed */
2206 ret = process_input();
2207 if (ret == AVERROR_EOF)
2211 ret = poll_filters();
2213 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2216 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2220 /* dump report by using the output first video and audio streams */
2221 print_report(0, timer_start);
2224 free_input_threads();
2227 /* at the end of stream, we must flush the decoder buffers */
2228 for (i = 0; i < nb_input_streams; i++) {
2229 ist = input_streams[i];
2230 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2231 output_packet(ist, NULL);
2239 /* write the trailer if needed and close file */
2240 for (i = 0; i < nb_output_files; i++) {
2241 os = output_files[i]->ctx;
2242 av_write_trailer(os);
2245 /* dump report by using the first video and audio streams */
2246 print_report(1, timer_start);
2248 /* close each encoder */
2249 for (i = 0; i < nb_output_streams; i++) {
2250 ost = output_streams[i];
2251 if (ost->encoding_needed) {
2252 av_freep(&ost->st->codec->stats_in);
2253 avcodec_close(ost->st->codec);
2257 /* close each decoder */
2258 for (i = 0; i < nb_input_streams; i++) {
2259 ist = input_streams[i];
2260 if (ist->decoding_needed) {
2261 avcodec_close(ist->st->codec);
2270 free_input_threads();
2273 if (output_streams) {
2274 for (i = 0; i < nb_output_streams; i++) {
2275 ost = output_streams[i];
2277 if (ost->stream_copy)
2278 av_freep(&ost->st->codec->extradata);
2280 fclose(ost->logfile);
2281 ost->logfile = NULL;
2283 av_freep(&ost->st->codec->subtitle_header);
2284 av_free(ost->forced_kf_pts);
2285 av_dict_free(&ost->opts);
2286 av_dict_free(&ost->resample_opts);
2293 static int64_t getutime(void)
2296 struct rusage rusage;
2298 getrusage(RUSAGE_SELF, &rusage);
2299 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2300 #elif HAVE_GETPROCESSTIMES
2302 FILETIME c, e, k, u;
2303 proc = GetCurrentProcess();
2304 GetProcessTimes(proc, &c, &e, &k, &u);
2305 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2307 return av_gettime();
2311 static int64_t getmaxrss(void)
2313 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2314 struct rusage rusage;
2315 getrusage(RUSAGE_SELF, &rusage);
2316 return (int64_t)rusage.ru_maxrss * 1024;
2317 #elif HAVE_GETPROCESSMEMORYINFO
2319 PROCESS_MEMORY_COUNTERS memcounters;
2320 proc = GetCurrentProcess();
2321 memcounters.cb = sizeof(memcounters);
2322 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2323 return memcounters.PeakPagefileUsage;
2329 int main(int argc, char **argv)
2334 register_exit(avconv_cleanup);
2336 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2337 parse_loglevel(argc, argv, options);
2339 avcodec_register_all();
2341 avdevice_register_all();
2343 avfilter_register_all();
2345 avformat_network_init();
2349 /* parse options and open all input/output files */
2350 ret = avconv_parse_options(argc, argv);
2354 if (nb_output_files <= 0 && nb_input_files == 0) {
2356 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2360 /* file converter / grab */
2361 if (nb_output_files <= 0) {
2362 fprintf(stderr, "At least one output file must be specified\n");
2367 if (transcode() < 0)
2369 ti = getutime() - ti;
2371 int maxrss = getmaxrss() / 1024;
2372 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);