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/colorspace.h"
39 #include "libavutil/fifo.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/mathematics.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/avstring.h"
45 #include "libavutil/libm.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/time.h"
48 #include "libavformat/os_support.h"
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/buffersrc.h"
52 # include "libavfilter/buffersink.h"
54 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/resource.h>
58 #elif HAVE_GETPROCESSTIMES
61 #if HAVE_GETPROCESSMEMORYINFO
67 #include <sys/select.h>
79 #include "libavutil/avassert.h"
81 const char program_name[] = "avconv";
82 const int program_birth_year = 2000;
84 static FILE *vstats_file;
86 static int64_t video_size = 0;
87 static int64_t audio_size = 0;
88 static int64_t extra_size = 0;
89 static int nb_frames_dup = 0;
90 static int nb_frames_drop = 0;
95 /* signal to input threads that they should exit; set by the main thread */
96 static int transcoding_finished;
99 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
101 InputStream **input_streams = NULL;
102 int nb_input_streams = 0;
103 InputFile **input_files = NULL;
104 int nb_input_files = 0;
106 OutputStream **output_streams = NULL;
107 int nb_output_streams = 0;
108 OutputFile **output_files = NULL;
109 int nb_output_files = 0;
111 FilterGraph **filtergraphs;
114 static void term_exit(void)
116 av_log(NULL, AV_LOG_QUIET, "");
119 static volatile int received_sigterm = 0;
120 static volatile int received_nb_signals = 0;
123 sigterm_handler(int sig)
125 received_sigterm = sig;
126 received_nb_signals++;
130 static void term_init(void)
132 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
133 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
135 signal(SIGXCPU, sigterm_handler);
139 static int decode_interrupt_cb(void *ctx)
141 return received_nb_signals > 1;
144 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
146 static void exit_program(void)
150 for (i = 0; i < nb_filtergraphs; i++) {
151 avfilter_graph_free(&filtergraphs[i]->graph);
152 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
153 av_freep(&filtergraphs[i]->inputs[j]->name);
154 av_freep(&filtergraphs[i]->inputs[j]);
156 av_freep(&filtergraphs[i]->inputs);
157 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
158 av_freep(&filtergraphs[i]->outputs[j]->name);
159 av_freep(&filtergraphs[i]->outputs[j]);
161 av_freep(&filtergraphs[i]->outputs);
162 av_freep(&filtergraphs[i]->graph_desc);
163 av_freep(&filtergraphs[i]);
165 av_freep(&filtergraphs);
168 for (i = 0; i < nb_output_files; i++) {
169 AVFormatContext *s = output_files[i]->ctx;
170 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
172 avformat_free_context(s);
173 av_dict_free(&output_files[i]->opts);
174 av_freep(&output_files[i]);
176 for (i = 0; i < nb_output_streams; i++) {
177 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
179 AVBitStreamFilterContext *next = bsfc->next;
180 av_bitstream_filter_close(bsfc);
183 output_streams[i]->bitstream_filters = NULL;
184 avcodec_free_frame(&output_streams[i]->filtered_frame);
186 av_freep(&output_streams[i]->forced_keyframes);
187 av_freep(&output_streams[i]->avfilter);
188 av_freep(&output_streams[i]->logfile_prefix);
189 av_freep(&output_streams[i]);
191 for (i = 0; i < nb_input_files; i++) {
192 avformat_close_input(&input_files[i]->ctx);
193 av_freep(&input_files[i]);
195 for (i = 0; i < nb_input_streams; i++) {
196 av_frame_free(&input_streams[i]->decoded_frame);
197 av_frame_free(&input_streams[i]->filter_frame);
198 av_dict_free(&input_streams[i]->opts);
199 av_freep(&input_streams[i]->filters);
200 av_freep(&input_streams[i]);
205 av_free(vstats_filename);
207 av_freep(&input_streams);
208 av_freep(&input_files);
209 av_freep(&output_streams);
210 av_freep(&output_files);
214 avformat_network_deinit();
216 if (received_sigterm) {
217 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
218 (int) received_sigterm);
223 void assert_avoptions(AVDictionary *m)
225 AVDictionaryEntry *t;
226 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
227 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
232 static void abort_codec_experimental(AVCodec *c, int encoder)
234 const char *codec_string = encoder ? "encoder" : "decoder";
236 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
237 "results.\nAdd '-strict experimental' if you want to use it.\n",
238 codec_string, c->name);
239 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
240 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
241 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
242 codec_string, codec->name);
247 * Update the requested input sample format based on the output sample format.
248 * This is currently only used to request float output from decoders which
249 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
250 * Ideally this will be removed in the future when decoders do not do format
251 * conversion and only output in their native format.
253 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
256 /* if sample formats match or a decoder sample format has already been
257 requested, just return */
258 if (enc->sample_fmt == dec->sample_fmt ||
259 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
262 /* if decoder supports more than one output format */
263 if (dec_codec && dec_codec->sample_fmts &&
264 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
265 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
266 const enum AVSampleFormat *p;
267 int min_dec = INT_MAX, min_inc = INT_MAX;
268 enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
269 enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
271 /* find a matching sample format in the encoder */
272 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
273 if (*p == enc->sample_fmt) {
274 dec->request_sample_fmt = *p;
277 enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
278 enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
279 int fmt_diff = 32 * abs(dfmt - efmt);
280 if (av_sample_fmt_is_planar(*p) !=
281 av_sample_fmt_is_planar(enc->sample_fmt))
286 } else if (dfmt > efmt) {
287 if (fmt_diff < min_inc) {
292 if (fmt_diff < min_dec) {
300 /* if none match, provide the one that matches quality closest */
301 dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
305 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
307 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
308 AVCodecContext *avctx = ost->st->codec;
312 * Audio encoders may split the packets -- #frames in != #packets out.
313 * But there is no reordering, so we can limit the number of output packets
314 * by simply dropping them here.
315 * Counting encoded video frames needs to be done separately because of
316 * reordering, see do_video_out()
318 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
319 if (ost->frame_number >= ost->max_frames) {
327 AVPacket new_pkt = *pkt;
328 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
329 &new_pkt.data, &new_pkt.size,
330 pkt->data, pkt->size,
331 pkt->flags & AV_PKT_FLAG_KEY);
334 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
335 av_buffer_default_free, NULL, 0);
339 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
340 bsfc->filter->name, pkt->stream_index,
341 avctx->codec ? avctx->codec->name : "copy");
351 pkt->stream_index = ost->index;
352 ret = av_interleaved_write_frame(s, pkt);
354 print_error("av_interleaved_write_frame()", ret);
359 static int check_recording_time(OutputStream *ost)
361 OutputFile *of = output_files[ost->file_index];
363 if (of->recording_time != INT64_MAX &&
364 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
365 AV_TIME_BASE_Q) >= 0) {
372 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
375 AVCodecContext *enc = ost->st->codec;
379 av_init_packet(&pkt);
383 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
384 frame->pts = ost->sync_opts;
385 ost->sync_opts = frame->pts + frame->nb_samples;
387 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
388 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
393 if (pkt.pts != AV_NOPTS_VALUE)
394 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
395 if (pkt.dts != AV_NOPTS_VALUE)
396 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
397 if (pkt.duration > 0)
398 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
400 write_frame(s, &pkt, ost);
402 audio_size += pkt.size;
406 #if FF_API_DEINTERLACE
407 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
411 AVPicture picture_tmp;
414 dec = ist->st->codec;
416 /* deinterlace : must be done before any resize */
417 if (do_deinterlace) {
420 /* create temporary picture */
421 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
422 buf = av_malloc(size);
426 picture2 = &picture_tmp;
427 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
429 if (avpicture_deinterlace(picture2, picture,
430 dec->pix_fmt, dec->width, dec->height) < 0) {
431 /* if error, do not deinterlace */
432 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
441 if (picture != picture2)
442 *picture = *picture2;
447 static void do_subtitle_out(AVFormatContext *s,
453 static uint8_t *subtitle_out = NULL;
454 int subtitle_out_max_size = 1024 * 1024;
455 int subtitle_out_size, nb, i;
459 if (pts == AV_NOPTS_VALUE) {
460 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
466 enc = ost->st->codec;
469 subtitle_out = av_malloc(subtitle_out_max_size);
472 /* Note: DVB subtitle need one packet to draw them and one other
473 packet to clear them */
474 /* XXX: signal it in the codec context ? */
475 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
480 for (i = 0; i < nb; i++) {
481 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
482 if (!check_recording_time(ost))
485 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
486 // start_display_time is required to be 0
487 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
488 sub->end_display_time -= sub->start_display_time;
489 sub->start_display_time = 0;
490 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
491 subtitle_out_max_size, sub);
492 if (subtitle_out_size < 0) {
493 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
497 av_init_packet(&pkt);
498 pkt.data = subtitle_out;
499 pkt.size = subtitle_out_size;
500 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
501 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
502 /* XXX: the pts correction is handled here. Maybe handling
503 it in the codec would be better */
505 pkt.pts += 90 * sub->start_display_time;
507 pkt.pts += 90 * sub->end_display_time;
509 write_frame(s, &pkt, ost);
513 static void do_video_out(AVFormatContext *s,
518 int ret, format_video_sync;
520 AVCodecContext *enc = ost->st->codec;
524 format_video_sync = video_sync_method;
525 if (format_video_sync == VSYNC_AUTO)
526 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
527 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
528 if (format_video_sync != VSYNC_PASSTHROUGH &&
530 in_picture->pts != AV_NOPTS_VALUE &&
531 in_picture->pts < ost->sync_opts) {
533 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
537 if (in_picture->pts == AV_NOPTS_VALUE)
538 in_picture->pts = ost->sync_opts;
539 ost->sync_opts = in_picture->pts;
542 if (!ost->frame_number)
543 ost->first_pts = in_picture->pts;
545 av_init_packet(&pkt);
549 if (ost->frame_number >= ost->max_frames)
552 if (s->oformat->flags & AVFMT_RAWPICTURE &&
553 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
554 /* raw pictures are written as AVPicture structure to
555 avoid any copies. We support temporarily the older
557 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
558 enc->coded_frame->top_field_first = in_picture->top_field_first;
559 pkt.data = (uint8_t *)in_picture;
560 pkt.size = sizeof(AVPicture);
561 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
562 pkt.flags |= AV_PKT_FLAG_KEY;
564 write_frame(s, &pkt, ost);
568 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
569 ost->top_field_first >= 0)
570 in_picture->top_field_first = !!ost->top_field_first;
572 in_picture->quality = ost->st->codec->global_quality;
573 if (!enc->me_threshold)
574 in_picture->pict_type = 0;
575 if (ost->forced_kf_index < ost->forced_kf_count &&
576 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
577 in_picture->pict_type = AV_PICTURE_TYPE_I;
578 ost->forced_kf_index++;
580 ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
582 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
587 if (pkt.pts != AV_NOPTS_VALUE)
588 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
589 if (pkt.dts != AV_NOPTS_VALUE)
590 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
592 write_frame(s, &pkt, ost);
593 *frame_size = pkt.size;
594 video_size += pkt.size;
596 /* if two pass, output log */
597 if (ost->logfile && enc->stats_out) {
598 fprintf(ost->logfile, "%s", enc->stats_out);
604 * For video, number of frames in == number of packets out.
605 * But there may be reordering, so we can't throw away frames on encoder
606 * flush, we need to limit them here, before they go into encoder.
611 static double psnr(double d)
613 return -10.0 * log(d) / log(10.0);
616 static void do_video_stats(OutputStream *ost, int frame_size)
620 double ti1, bitrate, avg_bitrate;
622 /* this is executed just the first time do_video_stats is called */
624 vstats_file = fopen(vstats_filename, "w");
631 enc = ost->st->codec;
632 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
633 frame_number = ost->frame_number;
634 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
635 if (enc->flags&CODEC_FLAG_PSNR)
636 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
638 fprintf(vstats_file,"f_size= %6d ", frame_size);
639 /* compute pts value */
640 ti1 = ost->sync_opts * av_q2d(enc->time_base);
644 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
645 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
646 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
647 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
648 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
653 * Read one frame for lavfi output for ost and encode it.
655 static int poll_filter(OutputStream *ost)
657 OutputFile *of = output_files[ost->file_index];
658 AVFrame *filtered_frame = NULL;
661 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
662 return AVERROR(ENOMEM);
664 avcodec_get_frame_defaults(ost->filtered_frame);
665 filtered_frame = ost->filtered_frame;
667 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
668 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
669 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
670 ost->st->codec->frame_size);
672 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
677 if (filtered_frame->pts != AV_NOPTS_VALUE) {
678 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
679 ost->filter->filter->inputs[0]->time_base,
680 ost->st->codec->time_base) -
681 av_rescale_q(of->start_time,
683 ost->st->codec->time_base);
686 switch (ost->filter->filter->inputs[0]->type) {
687 case AVMEDIA_TYPE_VIDEO:
688 if (!ost->frame_aspect_ratio)
689 ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
691 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
692 if (vstats_filename && frame_size)
693 do_video_stats(ost, frame_size);
695 case AVMEDIA_TYPE_AUDIO:
696 do_audio_out(of->ctx, ost, filtered_frame);
699 // TODO support subtitle filters
703 av_frame_unref(filtered_frame);
709 * Read as many frames from possible from lavfi and encode them.
711 * Always read from the active stream with the lowest timestamp. If no frames
712 * are available for it then return EAGAIN and wait for more input. This way we
713 * can use lavfi sources that generate unlimited amount of frames without memory
716 static int poll_filters(void)
720 while (ret >= 0 && !received_sigterm) {
721 OutputStream *ost = NULL;
722 int64_t min_pts = INT64_MAX;
724 /* choose output stream with the lowest timestamp */
725 for (i = 0; i < nb_output_streams; i++) {
726 int64_t pts = output_streams[i]->sync_opts;
728 if (!output_streams[i]->filter || output_streams[i]->finished)
731 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
735 ost = output_streams[i];
742 ret = poll_filter(ost);
744 if (ret == AVERROR_EOF) {
745 OutputFile *of = output_files[ost->file_index];
750 for (j = 0; j < of->ctx->nb_streams; j++)
751 output_streams[of->ost_index + j]->finished = 1;
755 } else if (ret == AVERROR(EAGAIN))
762 static void print_report(int is_last_report, int64_t timer_start)
769 int frame_number, vid, i;
770 double bitrate, ti1, pts;
771 static int64_t last_time = -1;
772 static int qp_histogram[52];
774 if (!print_stats && !is_last_report)
777 if (!is_last_report) {
779 /* display the report every 0.5 seconds */
780 cur_time = av_gettime();
781 if (last_time == -1) {
782 last_time = cur_time;
785 if ((cur_time - last_time) < 500000)
787 last_time = cur_time;
791 oc = output_files[0]->ctx;
793 total_size = avio_size(oc->pb);
794 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
795 total_size = avio_tell(oc->pb);
796 if (total_size < 0) {
798 av_strerror(total_size, errbuf, sizeof(errbuf));
799 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
800 "avio_tell() failed: %s\n", errbuf);
807 for (i = 0; i < nb_output_streams; i++) {
809 ost = output_streams[i];
810 enc = ost->st->codec;
811 if (!ost->stream_copy && enc->coded_frame)
812 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
813 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
814 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
816 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
817 float t = (av_gettime() - timer_start) / 1000000.0;
819 frame_number = ost->frame_number;
820 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
821 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
823 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
827 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
829 for (j = 0; j < 32; j++)
830 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
832 if (enc->flags&CODEC_FLAG_PSNR) {
834 double error, error_sum = 0;
835 double scale, scale_sum = 0;
836 char type[3] = { 'Y','U','V' };
837 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
838 for (j = 0; j < 3; j++) {
839 if (is_last_report) {
840 error = enc->error[j];
841 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
843 error = enc->coded_frame->error[j];
844 scale = enc->width * enc->height * 255.0 * 255.0;
850 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
852 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
856 /* compute min output value */
857 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
858 if ((pts < ti1) && (pts > 0))
864 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
866 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
867 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
868 (double)total_size / 1024, ti1, bitrate);
870 if (nb_frames_dup || nb_frames_drop)
871 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
872 nb_frames_dup, nb_frames_drop);
874 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
878 if (is_last_report) {
879 int64_t raw= audio_size + video_size + extra_size;
880 av_log(NULL, AV_LOG_INFO, "\n");
881 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
885 100.0 * (total_size - raw) / raw
890 static void flush_encoders(void)
894 for (i = 0; i < nb_output_streams; i++) {
895 OutputStream *ost = output_streams[i];
896 AVCodecContext *enc = ost->st->codec;
897 AVFormatContext *os = output_files[ost->file_index]->ctx;
898 int stop_encoding = 0;
900 if (!ost->encoding_needed)
903 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
905 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
909 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
913 switch (ost->st->codec->codec_type) {
914 case AVMEDIA_TYPE_AUDIO:
915 encode = avcodec_encode_audio2;
919 case AVMEDIA_TYPE_VIDEO:
920 encode = avcodec_encode_video2;
931 av_init_packet(&pkt);
935 ret = encode(enc, &pkt, NULL, &got_packet);
937 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
941 if (ost->logfile && enc->stats_out) {
942 fprintf(ost->logfile, "%s", enc->stats_out);
948 if (pkt.pts != AV_NOPTS_VALUE)
949 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
950 if (pkt.dts != AV_NOPTS_VALUE)
951 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
952 if (pkt.duration > 0)
953 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
954 write_frame(os, &pkt, ost);
964 * Check whether a packet from ist should be written into ost at this time
966 static int check_output_constraints(InputStream *ist, OutputStream *ost)
968 OutputFile *of = output_files[ost->file_index];
969 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
971 if (ost->source_index != ist_index)
974 if (of->start_time && ist->last_dts < of->start_time)
980 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
982 OutputFile *of = output_files[ost->file_index];
983 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
986 av_init_packet(&opkt);
988 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
989 !ost->copy_initial_nonkeyframes)
992 if (of->recording_time != INT64_MAX &&
993 ist->last_dts >= of->recording_time + of->start_time) {
998 /* force the input stream PTS */
999 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1000 audio_size += pkt->size;
1001 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1002 video_size += pkt->size;
1006 if (pkt->pts != AV_NOPTS_VALUE)
1007 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1009 opkt.pts = AV_NOPTS_VALUE;
1011 if (pkt->dts == AV_NOPTS_VALUE)
1012 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1014 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1015 opkt.dts -= ost_tb_start_time;
1017 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1018 opkt.flags = pkt->flags;
1020 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1021 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1022 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1023 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1024 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1026 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1027 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1032 opkt.data = pkt->data;
1033 opkt.size = pkt->size;
1036 write_frame(of->ctx, &opkt, ost);
1037 ost->st->codec->frame_number++;
1040 int guess_input_channel_layout(InputStream *ist)
1042 AVCodecContext *dec = ist->st->codec;
1044 if (!dec->channel_layout) {
1045 char layout_name[256];
1047 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1048 if (!dec->channel_layout)
1050 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1051 dec->channels, dec->channel_layout);
1052 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1053 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1058 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1060 AVFrame *decoded_frame, *f;
1061 AVCodecContext *avctx = ist->st->codec;
1062 int i, ret, err = 0, resample_changed;
1064 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1065 return AVERROR(ENOMEM);
1066 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1067 return AVERROR(ENOMEM);
1068 decoded_frame = ist->decoded_frame;
1070 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1071 if (!*got_output || ret < 0) {
1073 for (i = 0; i < ist->nb_filters; i++)
1074 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1079 /* if the decoder provides a pts, use it instead of the last packet pts.
1080 the decoder could be delaying output by a packet or more. */
1081 if (decoded_frame->pts != AV_NOPTS_VALUE)
1082 ist->next_dts = decoded_frame->pts;
1083 else if (pkt->pts != AV_NOPTS_VALUE) {
1084 decoded_frame->pts = pkt->pts;
1085 pkt->pts = AV_NOPTS_VALUE;
1088 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1089 ist->resample_channels != avctx->channels ||
1090 ist->resample_channel_layout != decoded_frame->channel_layout ||
1091 ist->resample_sample_rate != decoded_frame->sample_rate;
1092 if (resample_changed) {
1093 char layout1[64], layout2[64];
1095 if (!guess_input_channel_layout(ist)) {
1096 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1097 "layout for Input Stream #%d.%d\n", ist->file_index,
1101 decoded_frame->channel_layout = avctx->channel_layout;
1103 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1104 ist->resample_channel_layout);
1105 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1106 decoded_frame->channel_layout);
1108 av_log(NULL, AV_LOG_INFO,
1109 "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",
1110 ist->file_index, ist->st->index,
1111 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1112 ist->resample_channels, layout1,
1113 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1114 avctx->channels, layout2);
1116 ist->resample_sample_fmt = decoded_frame->format;
1117 ist->resample_sample_rate = decoded_frame->sample_rate;
1118 ist->resample_channel_layout = decoded_frame->channel_layout;
1119 ist->resample_channels = avctx->channels;
1121 for (i = 0; i < nb_filtergraphs; i++)
1122 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1123 configure_filtergraph(filtergraphs[i]) < 0) {
1124 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1129 if (decoded_frame->pts != AV_NOPTS_VALUE)
1130 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1132 (AVRational){1, ist->st->codec->sample_rate});
1133 for (i = 0; i < ist->nb_filters; i++) {
1134 if (i < ist->nb_filters - 1) {
1135 f = ist->filter_frame;
1136 err = av_frame_ref(f, decoded_frame);
1142 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1147 av_frame_unref(ist->filter_frame);
1148 av_frame_unref(decoded_frame);
1149 return err < 0 ? err : ret;
1152 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1154 AVFrame *decoded_frame, *f;
1155 void *buffer_to_free = NULL;
1156 int i, ret = 0, err = 0, resample_changed;
1158 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1159 return AVERROR(ENOMEM);
1160 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1161 return AVERROR(ENOMEM);
1162 decoded_frame = ist->decoded_frame;
1164 ret = avcodec_decode_video2(ist->st->codec,
1165 decoded_frame, got_output, pkt);
1166 if (!*got_output || ret < 0) {
1168 for (i = 0; i < ist->nb_filters; i++)
1169 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1174 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1175 decoded_frame->pkt_dts);
1177 #if FF_API_DEINTERLACE
1178 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1181 if (ist->st->sample_aspect_ratio.num)
1182 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1184 resample_changed = ist->resample_width != decoded_frame->width ||
1185 ist->resample_height != decoded_frame->height ||
1186 ist->resample_pix_fmt != decoded_frame->format;
1187 if (resample_changed) {
1188 av_log(NULL, AV_LOG_INFO,
1189 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1190 ist->file_index, ist->st->index,
1191 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1192 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1194 ret = poll_filters();
1195 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1196 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1198 ist->resample_width = decoded_frame->width;
1199 ist->resample_height = decoded_frame->height;
1200 ist->resample_pix_fmt = decoded_frame->format;
1202 for (i = 0; i < nb_filtergraphs; i++)
1203 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1204 configure_filtergraph(filtergraphs[i]) < 0) {
1205 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1210 for (i = 0; i < ist->nb_filters; i++) {
1211 if (i < ist->nb_filters - 1) {
1212 f = ist->filter_frame;
1213 err = av_frame_ref(f, decoded_frame);
1219 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1224 av_frame_unref(ist->filter_frame);
1225 av_frame_unref(decoded_frame);
1226 av_free(buffer_to_free);
1227 return err < 0 ? err : ret;
1230 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1232 AVSubtitle subtitle;
1233 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1234 &subtitle, got_output, pkt);
1240 for (i = 0; i < nb_output_streams; i++) {
1241 OutputStream *ost = output_streams[i];
1243 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1246 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1249 avsubtitle_free(&subtitle);
1253 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1254 static int output_packet(InputStream *ist, const AVPacket *pkt)
1260 if (ist->next_dts == AV_NOPTS_VALUE)
1261 ist->next_dts = ist->last_dts;
1265 av_init_packet(&avpkt);
1273 if (pkt->dts != AV_NOPTS_VALUE)
1274 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1276 // while we have more to decode or while the decoder did output something on EOF
1277 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1281 ist->last_dts = ist->next_dts;
1283 if (avpkt.size && avpkt.size != pkt->size) {
1284 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1285 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1286 ist->showed_multi_packet_warning = 1;
1289 switch (ist->st->codec->codec_type) {
1290 case AVMEDIA_TYPE_AUDIO:
1291 ret = decode_audio (ist, &avpkt, &got_output);
1293 case AVMEDIA_TYPE_VIDEO:
1294 ret = decode_video (ist, &avpkt, &got_output);
1296 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1297 else if (ist->st->avg_frame_rate.num)
1298 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1300 else if (ist->st->codec->time_base.num != 0) {
1301 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1302 ist->st->codec->ticks_per_frame;
1303 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1306 case AVMEDIA_TYPE_SUBTITLE:
1307 ret = transcode_subtitles(ist, &avpkt, &got_output);
1315 // touch data and size only if not EOF
1325 /* handle stream copy */
1326 if (!ist->decoding_needed) {
1327 ist->last_dts = ist->next_dts;
1328 switch (ist->st->codec->codec_type) {
1329 case AVMEDIA_TYPE_AUDIO:
1330 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1331 ist->st->codec->sample_rate;
1333 case AVMEDIA_TYPE_VIDEO:
1334 if (ist->st->codec->time_base.num != 0) {
1335 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1336 ist->next_dts += ((int64_t)AV_TIME_BASE *
1337 ist->st->codec->time_base.num * ticks) /
1338 ist->st->codec->time_base.den;
1343 for (i = 0; pkt && i < nb_output_streams; i++) {
1344 OutputStream *ost = output_streams[i];
1346 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1349 do_streamcopy(ist, ost, pkt);
1355 static void print_sdp(void)
1359 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1363 for (i = 0; i < nb_output_files; i++)
1364 avc[i] = output_files[i]->ctx;
1366 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1367 printf("SDP:\n%s\n", sdp);
1372 static int init_input_stream(int ist_index, char *error, int error_len)
1375 InputStream *ist = input_streams[ist_index];
1376 if (ist->decoding_needed) {
1377 AVCodec *codec = ist->dec;
1379 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1380 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1381 return AVERROR(EINVAL);
1384 /* update requested sample format for the decoder based on the
1385 corresponding encoder sample format */
1386 for (i = 0; i < nb_output_streams; i++) {
1387 OutputStream *ost = output_streams[i];
1388 if (ost->source_index == ist_index) {
1389 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1394 av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1396 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1397 av_dict_set(&ist->opts, "threads", "auto", 0);
1398 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1399 if (ret == AVERROR_EXPERIMENTAL)
1400 abort_codec_experimental(codec, 0);
1401 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1402 ist->file_index, ist->st->index);
1405 assert_avoptions(ist->opts);
1408 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;
1409 ist->next_dts = AV_NOPTS_VALUE;
1410 init_pts_correction(&ist->pts_ctx);
1416 static InputStream *get_input_stream(OutputStream *ost)
1418 if (ost->source_index >= 0)
1419 return input_streams[ost->source_index];
1422 FilterGraph *fg = ost->filter->graph;
1425 for (i = 0; i < fg->nb_inputs; i++)
1426 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1427 return fg->inputs[i]->ist;
1433 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1434 AVCodecContext *avctx)
1440 for (p = kf; *p; p++)
1443 ost->forced_kf_count = n;
1444 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1445 if (!ost->forced_kf_pts) {
1446 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1451 for (i = 0; i < n; i++) {
1452 char *next = strchr(p, ',');
1457 t = parse_time_or_die("force_key_frames", p, 1);
1458 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1464 static int transcode_init(void)
1466 int ret = 0, i, j, k;
1467 AVFormatContext *oc;
1468 AVCodecContext *codec;
1474 /* init framerate emulation */
1475 for (i = 0; i < nb_input_files; i++) {
1476 InputFile *ifile = input_files[i];
1477 if (ifile->rate_emu)
1478 for (j = 0; j < ifile->nb_streams; j++)
1479 input_streams[j + ifile->ist_index]->start = av_gettime();
1482 /* output stream init */
1483 for (i = 0; i < nb_output_files; i++) {
1484 oc = output_files[i]->ctx;
1485 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1486 av_dump_format(oc, i, oc->filename, 1);
1487 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1488 return AVERROR(EINVAL);
1492 /* init complex filtergraphs */
1493 for (i = 0; i < nb_filtergraphs; i++)
1494 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1497 /* for each output stream, we compute the right encoding parameters */
1498 for (i = 0; i < nb_output_streams; i++) {
1499 AVCodecContext *icodec = NULL;
1500 ost = output_streams[i];
1501 oc = output_files[ost->file_index]->ctx;
1502 ist = get_input_stream(ost);
1504 if (ost->attachment_filename)
1507 codec = ost->st->codec;
1510 icodec = ist->st->codec;
1512 ost->st->disposition = ist->st->disposition;
1513 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1514 codec->chroma_sample_location = icodec->chroma_sample_location;
1517 if (ost->stream_copy) {
1518 uint64_t extra_size;
1520 av_assert0(ist && !ost->filter);
1522 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1524 if (extra_size > INT_MAX) {
1525 return AVERROR(EINVAL);
1528 /* if stream_copy is selected, no need to decode or encode */
1529 codec->codec_id = icodec->codec_id;
1530 codec->codec_type = icodec->codec_type;
1532 if (!codec->codec_tag) {
1533 if (!oc->oformat->codec_tag ||
1534 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1535 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1536 codec->codec_tag = icodec->codec_tag;
1539 codec->bit_rate = icodec->bit_rate;
1540 codec->rc_max_rate = icodec->rc_max_rate;
1541 codec->rc_buffer_size = icodec->rc_buffer_size;
1542 codec->field_order = icodec->field_order;
1543 codec->extradata = av_mallocz(extra_size);
1544 if (!codec->extradata) {
1545 return AVERROR(ENOMEM);
1547 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1548 codec->extradata_size = icodec->extradata_size;
1550 codec->time_base = icodec->time_base;
1551 codec->time_base.num *= icodec->ticks_per_frame;
1552 av_reduce(&codec->time_base.num, &codec->time_base.den,
1553 codec->time_base.num, codec->time_base.den, INT_MAX);
1555 codec->time_base = ist->st->time_base;
1557 switch (codec->codec_type) {
1558 case AVMEDIA_TYPE_AUDIO:
1559 if (audio_volume != 256) {
1560 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1563 codec->channel_layout = icodec->channel_layout;
1564 codec->sample_rate = icodec->sample_rate;
1565 codec->channels = icodec->channels;
1566 codec->frame_size = icodec->frame_size;
1567 codec->audio_service_type = icodec->audio_service_type;
1568 codec->block_align = icodec->block_align;
1570 case AVMEDIA_TYPE_VIDEO:
1571 codec->pix_fmt = icodec->pix_fmt;
1572 codec->width = icodec->width;
1573 codec->height = icodec->height;
1574 codec->has_b_frames = icodec->has_b_frames;
1575 if (!codec->sample_aspect_ratio.num) {
1576 codec->sample_aspect_ratio =
1577 ost->st->sample_aspect_ratio =
1578 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1579 ist->st->codec->sample_aspect_ratio.num ?
1580 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1583 case AVMEDIA_TYPE_SUBTITLE:
1584 codec->width = icodec->width;
1585 codec->height = icodec->height;
1587 case AVMEDIA_TYPE_DATA:
1588 case AVMEDIA_TYPE_ATTACHMENT:
1595 /* should only happen when a default codec is not present. */
1596 snprintf(error, sizeof(error), "Automatic encoder selection "
1597 "failed for output stream #%d:%d. Default encoder for "
1598 "format %s is probably disabled. Please choose an "
1599 "encoder manually.\n", ost->file_index, ost->index,
1601 ret = AVERROR(EINVAL);
1606 ist->decoding_needed = 1;
1607 ost->encoding_needed = 1;
1610 * We want CFR output if and only if one of those is true:
1611 * 1) user specified output framerate with -r
1612 * 2) user specified -vsync cfr
1613 * 3) output format is CFR and the user didn't force vsync to
1614 * something else than CFR
1616 * in such a case, set ost->frame_rate
1618 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1619 !ost->frame_rate.num && ist &&
1620 (video_sync_method == VSYNC_CFR ||
1621 (video_sync_method == VSYNC_AUTO &&
1622 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1623 ost->frame_rate = ist->framerate.num ? ist->framerate :
1624 ist->st->avg_frame_rate.num ?
1625 ist->st->avg_frame_rate :
1626 (AVRational){25, 1};
1628 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1629 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1630 ost->frame_rate = ost->enc->supported_framerates[idx];
1635 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1636 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1638 fg = init_simple_filtergraph(ist, ost);
1639 if (configure_filtergraph(fg)) {
1640 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1645 switch (codec->codec_type) {
1646 case AVMEDIA_TYPE_AUDIO:
1647 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1648 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1649 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1650 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1651 codec->time_base = (AVRational){ 1, codec->sample_rate };
1653 case AVMEDIA_TYPE_VIDEO:
1654 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1656 codec->width = ost->filter->filter->inputs[0]->w;
1657 codec->height = ost->filter->filter->inputs[0]->h;
1658 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1659 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1660 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1661 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1662 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1665 (codec->width != icodec->width ||
1666 codec->height != icodec->height ||
1667 codec->pix_fmt != icodec->pix_fmt)) {
1668 codec->bits_per_raw_sample = 0;
1671 if (ost->forced_keyframes)
1672 parse_forced_key_frames(ost->forced_keyframes, ost,
1675 case AVMEDIA_TYPE_SUBTITLE:
1676 codec->time_base = (AVRational){1, 1000};
1683 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1684 char logfilename[1024];
1687 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1688 ost->logfile_prefix ? ost->logfile_prefix :
1689 DEFAULT_PASS_LOGFILENAME_PREFIX,
1691 if (!strcmp(ost->enc->name, "libx264")) {
1692 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1694 if (codec->flags & CODEC_FLAG_PASS1) {
1695 f = fopen(logfilename, "wb");
1697 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1698 logfilename, strerror(errno));
1704 size_t logbuffer_size;
1705 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1706 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1710 codec->stats_in = logbuffer;
1717 /* open each encoder */
1718 for (i = 0; i < nb_output_streams; i++) {
1719 ost = output_streams[i];
1720 if (ost->encoding_needed) {
1721 AVCodec *codec = ost->enc;
1722 AVCodecContext *dec = NULL;
1724 if ((ist = get_input_stream(ost)))
1725 dec = ist->st->codec;
1726 if (dec && dec->subtitle_header) {
1727 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1728 if (!ost->st->codec->subtitle_header) {
1729 ret = AVERROR(ENOMEM);
1732 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1733 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1735 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1736 av_dict_set(&ost->opts, "threads", "auto", 0);
1737 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1738 if (ret == AVERROR_EXPERIMENTAL)
1739 abort_codec_experimental(codec, 1);
1740 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1741 ost->file_index, ost->index);
1744 assert_avoptions(ost->opts);
1745 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1746 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1747 "It takes bits/s as argument, not kbits/s\n");
1748 extra_size += ost->st->codec->extradata_size;
1750 if (ost->st->codec->me_threshold)
1751 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
1753 av_opt_set_dict(ost->st->codec, &ost->opts);
1757 /* init input streams */
1758 for (i = 0; i < nb_input_streams; i++)
1759 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1762 /* discard unused programs */
1763 for (i = 0; i < nb_input_files; i++) {
1764 InputFile *ifile = input_files[i];
1765 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1766 AVProgram *p = ifile->ctx->programs[j];
1767 int discard = AVDISCARD_ALL;
1769 for (k = 0; k < p->nb_stream_indexes; k++)
1770 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1771 discard = AVDISCARD_DEFAULT;
1774 p->discard = discard;
1778 /* open files and write file headers */
1779 for (i = 0; i < nb_output_files; i++) {
1780 oc = output_files[i]->ctx;
1781 oc->interrupt_callback = int_cb;
1782 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1784 const char *errbuf_ptr = errbuf;
1785 if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
1786 errbuf_ptr = strerror(AVUNERROR(ret));
1787 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
1788 ret = AVERROR(EINVAL);
1791 assert_avoptions(output_files[i]->opts);
1792 if (strcmp(oc->oformat->name, "rtp")) {
1798 /* dump the file output parameters - cannot be done before in case
1800 for (i = 0; i < nb_output_files; i++) {
1801 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1804 /* dump the stream mapping */
1805 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1806 for (i = 0; i < nb_input_streams; i++) {
1807 ist = input_streams[i];
1809 for (j = 0; j < ist->nb_filters; j++) {
1810 if (ist->filters[j]->graph->graph_desc) {
1811 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1812 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1813 ist->filters[j]->name);
1814 if (nb_filtergraphs > 1)
1815 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1816 av_log(NULL, AV_LOG_INFO, "\n");
1821 for (i = 0; i < nb_output_streams; i++) {
1822 ost = output_streams[i];
1824 if (ost->attachment_filename) {
1825 /* an attached file */
1826 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1827 ost->attachment_filename, ost->file_index, ost->index);
1831 if (ost->filter && ost->filter->graph->graph_desc) {
1832 /* output from a complex graph */
1833 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1834 if (nb_filtergraphs > 1)
1835 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1837 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1838 ost->index, ost->enc ? ost->enc->name : "?");
1842 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1843 input_streams[ost->source_index]->file_index,
1844 input_streams[ost->source_index]->st->index,
1847 if (ost->sync_ist != input_streams[ost->source_index])
1848 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1849 ost->sync_ist->file_index,
1850 ost->sync_ist->st->index);
1851 if (ost->stream_copy)
1852 av_log(NULL, AV_LOG_INFO, " (copy)");
1854 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1855 input_streams[ost->source_index]->dec->name : "?",
1856 ost->enc ? ost->enc->name : "?");
1857 av_log(NULL, AV_LOG_INFO, "\n");
1861 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1872 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
1873 static int need_output(void)
1877 for (i = 0; i < nb_output_streams; i++) {
1878 OutputStream *ost = output_streams[i];
1879 OutputFile *of = output_files[ost->file_index];
1880 AVFormatContext *os = output_files[ost->file_index]->ctx;
1882 if (ost->finished ||
1883 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1885 if (ost->frame_number >= ost->max_frames) {
1887 for (j = 0; j < of->ctx->nb_streams; j++)
1888 output_streams[of->ost_index + j]->finished = 1;
1898 static InputFile *select_input_file(void)
1900 InputFile *ifile = NULL;
1901 int64_t ipts_min = INT64_MAX;
1904 for (i = 0; i < nb_input_streams; i++) {
1905 InputStream *ist = input_streams[i];
1906 int64_t ipts = ist->last_dts;
1908 if (ist->discard || input_files[ist->file_index]->eagain)
1910 if (!input_files[ist->file_index]->eof_reached) {
1911 if (ipts < ipts_min) {
1913 ifile = input_files[ist->file_index];
1922 static void *input_thread(void *arg)
1927 while (!transcoding_finished && ret >= 0) {
1929 ret = av_read_frame(f->ctx, &pkt);
1931 if (ret == AVERROR(EAGAIN)) {
1938 pthread_mutex_lock(&f->fifo_lock);
1939 while (!av_fifo_space(f->fifo))
1940 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
1942 av_dup_packet(&pkt);
1943 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
1945 pthread_mutex_unlock(&f->fifo_lock);
1952 static void free_input_threads(void)
1956 if (nb_input_files == 1)
1959 transcoding_finished = 1;
1961 for (i = 0; i < nb_input_files; i++) {
1962 InputFile *f = input_files[i];
1965 if (!f->fifo || f->joined)
1968 pthread_mutex_lock(&f->fifo_lock);
1969 while (av_fifo_size(f->fifo)) {
1970 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1971 av_free_packet(&pkt);
1973 pthread_cond_signal(&f->fifo_cond);
1974 pthread_mutex_unlock(&f->fifo_lock);
1976 pthread_join(f->thread, NULL);
1979 while (av_fifo_size(f->fifo)) {
1980 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1981 av_free_packet(&pkt);
1983 av_fifo_free(f->fifo);
1987 static int init_input_threads(void)
1991 if (nb_input_files == 1)
1994 for (i = 0; i < nb_input_files; i++) {
1995 InputFile *f = input_files[i];
1997 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
1998 return AVERROR(ENOMEM);
2000 pthread_mutex_init(&f->fifo_lock, NULL);
2001 pthread_cond_init (&f->fifo_cond, NULL);
2003 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2004 return AVERROR(ret);
2009 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2013 pthread_mutex_lock(&f->fifo_lock);
2015 if (av_fifo_size(f->fifo)) {
2016 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2017 pthread_cond_signal(&f->fifo_cond);
2022 ret = AVERROR(EAGAIN);
2025 pthread_mutex_unlock(&f->fifo_lock);
2031 static int get_input_packet(InputFile *f, AVPacket *pkt)
2035 for (i = 0; i < f->nb_streams; i++) {
2036 InputStream *ist = input_streams[f->ist_index + i];
2037 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2038 int64_t now = av_gettime() - ist->start;
2040 return AVERROR(EAGAIN);
2045 if (nb_input_files > 1)
2046 return get_input_packet_mt(f, pkt);
2048 return av_read_frame(f->ctx, pkt);
2051 static int got_eagain(void)
2054 for (i = 0; i < nb_input_files; i++)
2055 if (input_files[i]->eagain)
2060 static void reset_eagain(void)
2063 for (i = 0; i < nb_input_files; i++)
2064 input_files[i]->eagain = 0;
2068 * Read one packet from an input file and send it for
2069 * - decoding -> lavfi (audio/video)
2070 * - decoding -> encoding -> muxing (subtitles)
2071 * - muxing (streamcopy)
2074 * - 0 -- one packet was read and processed
2075 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2076 * this function should be called again
2077 * - AVERROR_EOF -- this function should not be called again
2079 static int process_input(void)
2082 AVFormatContext *is;
2087 /* select the stream that we must read now */
2088 ifile = select_input_file();
2089 /* if none, if is finished */
2094 return AVERROR(EAGAIN);
2096 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2101 ret = get_input_packet(ifile, &pkt);
2103 if (ret == AVERROR(EAGAIN)) {
2108 if (ret != AVERROR_EOF) {
2109 print_error(is->filename, ret);
2113 ifile->eof_reached = 1;
2115 for (i = 0; i < ifile->nb_streams; i++) {
2116 ist = input_streams[ifile->ist_index + i];
2117 if (ist->decoding_needed)
2118 output_packet(ist, NULL);
2120 /* mark all outputs that don't go through lavfi as finished */
2121 for (j = 0; j < nb_output_streams; j++) {
2122 OutputStream *ost = output_streams[j];
2124 if (ost->source_index == ifile->ist_index + i &&
2125 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2130 return AVERROR(EAGAIN);
2136 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2137 is->streams[pkt.stream_index]);
2139 /* the following test is needed in case new streams appear
2140 dynamically in stream : we ignore them */
2141 if (pkt.stream_index >= ifile->nb_streams)
2142 goto discard_packet;
2144 ist = input_streams[ifile->ist_index + pkt.stream_index];
2146 goto discard_packet;
2148 if (pkt.dts != AV_NOPTS_VALUE)
2149 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2150 if (pkt.pts != AV_NOPTS_VALUE)
2151 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2153 if (pkt.pts != AV_NOPTS_VALUE)
2154 pkt.pts *= ist->ts_scale;
2155 if (pkt.dts != AV_NOPTS_VALUE)
2156 pkt.dts *= ist->ts_scale;
2158 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2159 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2160 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2161 int64_t delta = pkt_dts - ist->next_dts;
2163 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2164 ifile->ts_offset -= delta;
2165 av_log(NULL, AV_LOG_DEBUG,
2166 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2167 delta, ifile->ts_offset);
2168 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2169 if (pkt.pts != AV_NOPTS_VALUE)
2170 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2174 ret = output_packet(ist, &pkt);
2176 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2177 ist->file_index, ist->st->index);
2183 av_free_packet(&pkt);
2189 * The following code is the main loop of the file converter
2191 static int transcode(void)
2193 int ret, i, need_input = 1;
2194 AVFormatContext *os;
2197 int64_t timer_start;
2199 ret = transcode_init();
2203 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2206 timer_start = av_gettime();
2209 if ((ret = init_input_threads()) < 0)
2213 while (!received_sigterm) {
2214 /* check if there's any stream where output is still needed */
2215 if (!need_output()) {
2216 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2220 /* read and process one input packet if needed */
2222 ret = process_input();
2223 if (ret == AVERROR_EOF)
2227 ret = poll_filters();
2229 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2232 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2236 /* dump report by using the output first video and audio streams */
2237 print_report(0, timer_start);
2240 free_input_threads();
2243 /* at the end of stream, we must flush the decoder buffers */
2244 for (i = 0; i < nb_input_streams; i++) {
2245 ist = input_streams[i];
2246 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2247 output_packet(ist, NULL);
2255 /* write the trailer if needed and close file */
2256 for (i = 0; i < nb_output_files; i++) {
2257 os = output_files[i]->ctx;
2258 av_write_trailer(os);
2261 /* dump report by using the first video and audio streams */
2262 print_report(1, timer_start);
2264 /* close each encoder */
2265 for (i = 0; i < nb_output_streams; i++) {
2266 ost = output_streams[i];
2267 if (ost->encoding_needed) {
2268 av_freep(&ost->st->codec->stats_in);
2269 avcodec_close(ost->st->codec);
2273 /* close each decoder */
2274 for (i = 0; i < nb_input_streams; i++) {
2275 ist = input_streams[i];
2276 if (ist->decoding_needed) {
2277 avcodec_close(ist->st->codec);
2286 free_input_threads();
2289 if (output_streams) {
2290 for (i = 0; i < nb_output_streams; i++) {
2291 ost = output_streams[i];
2293 if (ost->stream_copy)
2294 av_freep(&ost->st->codec->extradata);
2296 fclose(ost->logfile);
2297 ost->logfile = NULL;
2299 av_freep(&ost->st->codec->subtitle_header);
2300 av_free(ost->forced_kf_pts);
2301 av_dict_free(&ost->opts);
2302 av_dict_free(&ost->resample_opts);
2309 static int64_t getutime(void)
2312 struct rusage rusage;
2314 getrusage(RUSAGE_SELF, &rusage);
2315 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2316 #elif HAVE_GETPROCESSTIMES
2318 FILETIME c, e, k, u;
2319 proc = GetCurrentProcess();
2320 GetProcessTimes(proc, &c, &e, &k, &u);
2321 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2323 return av_gettime();
2327 static int64_t getmaxrss(void)
2329 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2330 struct rusage rusage;
2331 getrusage(RUSAGE_SELF, &rusage);
2332 return (int64_t)rusage.ru_maxrss * 1024;
2333 #elif HAVE_GETPROCESSMEMORYINFO
2335 PROCESS_MEMORY_COUNTERS memcounters;
2336 proc = GetCurrentProcess();
2337 memcounters.cb = sizeof(memcounters);
2338 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2339 return memcounters.PeakPagefileUsage;
2345 int main(int argc, char **argv)
2350 atexit(exit_program);
2352 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2353 parse_loglevel(argc, argv, options);
2355 avcodec_register_all();
2357 avdevice_register_all();
2359 avfilter_register_all();
2361 avformat_network_init();
2365 /* parse options and open all input/output files */
2366 ret = avconv_parse_options(argc, argv);
2370 if (nb_output_files <= 0 && nb_input_files == 0) {
2372 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2376 /* file converter / grab */
2377 if (nb_output_files <= 0) {
2378 fprintf(stderr, "At least one output file must be specified\n");
2383 if (transcode() < 0)
2385 ti = getutime() - ti;
2387 int maxrss = getmaxrss() / 1024;
2388 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);