2 * avprobe : Simple Media Prober based on the Libav libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
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
24 #include "libavformat/avformat.h"
25 #include "libavcodec/avcodec.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/dict.h"
29 #include "libavdevice/avdevice.h"
32 const char program_name[] = "avprobe";
33 const int program_birth_year = 2007;
35 static int do_show_format = 0;
36 static AVDictionary *fmt_entries_to_show = NULL;
37 static int nb_fmt_entries_to_show;
38 static int do_show_packets = 0;
39 static int do_show_streams = 0;
41 static int show_value_unit = 0;
42 static int use_value_prefix = 0;
43 static int use_byte_value_binary_prefix = 0;
44 static int use_value_sexagesimal_format = 0;
47 static const OptionDef options[];
50 static const char *input_filename;
51 static AVInputFormat *iformat = NULL;
53 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
54 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
56 static const char unit_second_str[] = "s" ;
57 static const char unit_hertz_str[] = "Hz" ;
58 static const char unit_byte_str[] = "byte" ;
59 static const char unit_bit_per_second_str[] = "bit/s";
61 void exit_program(int ret)
63 av_dict_free(&fmt_entries_to_show);
68 * The output is structured in array and objects that might contain items
69 * Array could require the objects within to not be named.
70 * Object could require the items within to be named.
72 * For flat representation the name of each section is saved on prefix so it
73 * can be rendered in order to represent nested structures (e.g. array of
74 * objects for the packets list).
76 * Within an array each element can need an unique identifier or an index.
78 * Nesting level is accounted separately.
88 ProbeElementType type;
98 static AVIOContext *probe_out = NULL;
99 static OutputContext octx;
100 #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
103 * Default format, INI
105 * - all key and values are utf8
106 * - '.' is the subgroup separator
107 * - newlines and the following characters are escaped
108 * - '\' is the escape character
109 * - '#' is the comment
110 * - '=' is the key/value separators
111 * - ':' is not used but usually parsed as key/value separator
114 static void ini_print_header(void)
116 avio_printf(probe_out, "# avprobe output\n\n");
118 static void ini_print_footer(void)
120 avio_w8(probe_out, '\n');
123 static void ini_escape_print(const char *s)
130 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
131 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
132 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
133 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
134 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
138 case ':' : avio_w8(probe_out, '\\');
140 if ((unsigned char)c < 32)
141 avio_printf(probe_out, "\\x00%02x", c & 0xff);
143 avio_w8(probe_out, c);
149 static void ini_print_array_header(const char *name)
151 if (octx.prefix[octx.level -1].nb_elems)
152 avio_printf(probe_out, "\n");
155 static void ini_print_object_header(const char *name)
158 ProbeElement *el = octx.prefix + octx.level -1;
161 avio_printf(probe_out, "\n");
163 avio_printf(probe_out, "[");
165 for (i = 1; i < octx.level; i++) {
166 el = octx.prefix + i;
167 avio_printf(probe_out, "%s.", el->name);
169 avio_printf(probe_out, "%"PRId64".", el->index);
172 avio_printf(probe_out, "%s", name);
173 if (el && el->type == ARRAY)
174 avio_printf(probe_out, ".%"PRId64"", el->nb_elems);
175 avio_printf(probe_out, "]\n");
178 static void ini_print_integer(const char *key, int64_t value)
180 ini_escape_print(key);
181 avio_printf(probe_out, "=%"PRId64"\n", value);
185 static void ini_print_string(const char *key, const char *value)
187 ini_escape_print(key);
188 avio_printf(probe_out, "=");
189 ini_escape_print(value);
190 avio_w8(probe_out, '\n');
194 * Alternate format, JSON
197 static void json_print_header(void)
199 avio_printf(probe_out, "{");
201 static void json_print_footer(void)
203 avio_printf(probe_out, "}\n");
206 static void json_print_array_header(const char *name)
208 if (octx.prefix[octx.level -1].nb_elems)
209 avio_printf(probe_out, ",\n");
211 avio_printf(probe_out, "\"%s\" : ", name);
212 avio_printf(probe_out, "[\n");
215 static void json_print_array_footer(const char *name)
217 avio_printf(probe_out, "\n");
219 avio_printf(probe_out, "]");
222 static void json_print_object_header(const char *name)
224 if (octx.prefix[octx.level -1].nb_elems)
225 avio_printf(probe_out, ",\n");
227 if (octx.prefix[octx.level -1].type == OBJECT)
228 avio_printf(probe_out, "\"%s\" : ", name);
229 avio_printf(probe_out, "{\n");
232 static void json_print_object_footer(const char *name)
234 avio_printf(probe_out, "\n");
236 avio_printf(probe_out, "}");
239 static void json_print_integer(const char *key, int64_t value)
241 if (octx.prefix[octx.level -1].nb_elems)
242 avio_printf(probe_out, ",\n");
244 avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
247 static void json_escape_print(const char *s)
254 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
255 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
256 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
257 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
258 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
260 case '"' : avio_w8(probe_out, '\\');
262 if ((unsigned char)c < 32)
263 avio_printf(probe_out, "\\u00%02x", c & 0xff);
265 avio_w8(probe_out, c);
271 static void json_print_string(const char *key, const char *value)
273 if (octx.prefix[octx.level -1].nb_elems)
274 avio_printf(probe_out, ",\n");
276 avio_w8(probe_out, '\"');
277 json_escape_print(key);
278 avio_printf(probe_out, "\" : \"");
279 json_escape_print(value);
280 avio_w8(probe_out, '\"');
284 * old-style pseudo-INI
286 static void old_print_object_header(const char *name)
290 if (!strcmp(name, "tags"))
293 str = p = av_strdup(name);
299 avio_printf(probe_out, "[%s]\n", str);
303 static void old_print_object_footer(const char *name)
307 if (!strcmp(name, "tags"))
310 str = p = av_strdup(name);
316 avio_printf(probe_out, "[/%s]\n", str);
320 static void old_print_string(const char *key, const char *value)
322 if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
323 avio_printf(probe_out, "TAG:");
324 ini_print_string(key, value);
328 * Simple Formatter for single entries.
331 static void show_format_entry_integer(const char *key, int64_t value)
333 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
334 if (nb_fmt_entries_to_show > 1)
335 avio_printf(probe_out, "%s=", key);
336 avio_printf(probe_out, "%"PRId64"\n", value);
340 static void show_format_entry_string(const char *key, const char *value)
342 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
343 if (nb_fmt_entries_to_show > 1)
344 avio_printf(probe_out, "%s=", key);
345 avio_printf(probe_out, "%s\n", value);
350 void (*print_header)(void) = ini_print_header;
351 void (*print_footer)(void) = ini_print_footer;
353 void (*print_array_header) (const char *name) = ini_print_array_header;
354 void (*print_array_footer) (const char *name);
355 void (*print_object_header)(const char *name) = ini_print_object_header;
356 void (*print_object_footer)(const char *name);
358 void (*print_integer) (const char *key, int64_t value) = ini_print_integer;
359 void (*print_string) (const char *key, const char *value) = ini_print_string;
362 static void probe_group_enter(const char *name, int type)
367 av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
369 if (!octx.prefix || !name) {
370 fprintf(stderr, "Out of memory\n");
375 ProbeElement *parent = octx.prefix + octx.level -1;
376 if (parent->type == ARRAY)
377 count = parent->nb_elems;
381 octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
384 static void probe_group_leave(void)
389 static void probe_header(void)
393 probe_group_enter("root", OBJECT);
396 static void probe_footer(void)
404 static void probe_array_header(const char *name)
406 if (print_array_header)
407 print_array_header(name);
409 probe_group_enter(name, ARRAY);
412 static void probe_array_footer(const char *name)
415 if (print_array_footer)
416 print_array_footer(name);
419 static void probe_object_header(const char *name)
421 if (print_object_header)
422 print_object_header(name);
424 probe_group_enter(name, OBJECT);
427 static void probe_object_footer(const char *name)
430 if (print_object_footer)
431 print_object_footer(name);
434 static void probe_int(const char *key, int64_t value)
436 print_integer(key, value);
437 octx.prefix[octx.level -1].nb_elems++;
440 static void probe_str(const char *key, const char *value)
442 print_string(key, value);
443 octx.prefix[octx.level -1].nb_elems++;
446 static void probe_dict(AVDictionary *dict, const char *name)
448 AVDictionaryEntry *entry = NULL;
451 probe_object_header(name);
452 while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
453 probe_str(entry->key, entry->value);
455 probe_object_footer(name);
458 static char *value_string(char *buf, int buf_size, double val, const char *unit)
460 if (unit == unit_second_str && use_value_sexagesimal_format) {
464 mins = (int)secs / 60;
465 secs = secs - mins * 60;
468 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
469 } else if (use_value_prefix) {
470 const char *prefix_string;
473 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
474 index = (int) (log(val)/log(2)) / 10;
475 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
476 val /= pow(2, index * 10);
477 prefix_string = binary_unit_prefixes[index];
479 index = (int) (log10(val)) / 3;
480 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
481 val /= pow(10, index * 3);
482 prefix_string = decimal_unit_prefixes[index];
484 snprintf(buf, buf_size, "%.*f%s%s",
487 show_value_unit ? unit : "");
489 snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : "");
495 static char *time_value_string(char *buf, int buf_size, int64_t val,
496 const AVRational *time_base)
498 if (val == AV_NOPTS_VALUE) {
499 snprintf(buf, buf_size, "N/A");
501 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
507 static char *ts_value_string(char *buf, int buf_size, int64_t ts)
509 if (ts == AV_NOPTS_VALUE) {
510 snprintf(buf, buf_size, "N/A");
512 snprintf(buf, buf_size, "%"PRId64, ts);
518 static char *rational_string(char *buf, int buf_size, const char *sep,
519 const AVRational *rat)
521 snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
525 static char *tag_string(char *buf, int buf_size, int tag)
527 snprintf(buf, buf_size, "0x%04x", tag);
533 static const char *media_type_string(enum AVMediaType media_type)
535 switch (media_type) {
536 case AVMEDIA_TYPE_VIDEO: return "video";
537 case AVMEDIA_TYPE_AUDIO: return "audio";
538 case AVMEDIA_TYPE_DATA: return "data";
539 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
540 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
541 default: return "unknown";
545 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
548 AVStream *st = fmt_ctx->streams[pkt->stream_index];
550 probe_object_header("packet");
551 probe_str("codec_type", media_type_string(st->codec->codec_type));
552 probe_int("stream_index", pkt->stream_index);
553 probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts));
554 probe_str("pts_time", time_value_string(val_str, sizeof(val_str),
555 pkt->pts, &st->time_base));
556 probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts));
557 probe_str("dts_time", time_value_string(val_str, sizeof(val_str),
558 pkt->dts, &st->time_base));
559 probe_str("duration", ts_value_string(val_str, sizeof(val_str),
561 probe_str("duration_time", time_value_string(val_str, sizeof(val_str),
564 probe_str("size", value_string(val_str, sizeof(val_str),
565 pkt->size, unit_byte_str));
566 probe_int("pos", pkt->pos);
567 probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_");
568 probe_object_footer("packet");
571 static void show_packets(AVFormatContext *fmt_ctx)
575 av_init_packet(&pkt);
576 probe_array_header("packets");
577 while (!av_read_frame(fmt_ctx, &pkt))
578 show_packet(fmt_ctx, &pkt);
579 probe_array_footer("packets");
582 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
584 AVStream *stream = fmt_ctx->streams[stream_idx];
585 AVCodecContext *dec_ctx;
589 AVRational display_aspect_ratio;
591 probe_object_header("stream");
593 probe_int("index", stream->index);
595 if ((dec_ctx = stream->codec)) {
596 if ((dec = dec_ctx->codec)) {
597 probe_str("codec_name", dec->name);
598 probe_str("codec_long_name", dec->long_name);
600 probe_str("codec_name", "unknown");
603 probe_str("codec_type", media_type_string(dec_ctx->codec_type));
604 probe_str("codec_time_base",
605 rational_string(val_str, sizeof(val_str),
606 "/", &dec_ctx->time_base));
608 /* print AVI/FourCC tag */
609 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
610 probe_str("codec_tag_string", val_str);
611 probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
612 dec_ctx->codec_tag));
614 /* print profile, if there is one */
615 if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
616 probe_str("profile", profile);
618 switch (dec_ctx->codec_type) {
619 case AVMEDIA_TYPE_VIDEO:
620 probe_int("width", dec_ctx->width);
621 probe_int("height", dec_ctx->height);
622 probe_int("has_b_frames", dec_ctx->has_b_frames);
623 if (dec_ctx->sample_aspect_ratio.num) {
624 probe_str("sample_aspect_ratio",
625 rational_string(val_str, sizeof(val_str), ":",
626 &dec_ctx->sample_aspect_ratio));
627 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
628 dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
629 dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
631 probe_str("display_aspect_ratio",
632 rational_string(val_str, sizeof(val_str), ":",
633 &display_aspect_ratio));
636 dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name
638 probe_int("level", dec_ctx->level);
641 case AVMEDIA_TYPE_AUDIO:
642 probe_str("sample_rate",
643 value_string(val_str, sizeof(val_str),
644 dec_ctx->sample_rate,
646 probe_int("channels", dec_ctx->channels);
647 probe_int("bits_per_sample",
648 av_get_bits_per_sample(dec_ctx->codec_id));
652 probe_str("codec_type", "unknown");
655 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
656 probe_int("id", stream->id);
657 probe_str("r_frame_rate",
658 rational_string(val_str, sizeof(val_str), "/",
659 &stream->r_frame_rate));
660 probe_str("avg_frame_rate",
661 rational_string(val_str, sizeof(val_str), "/",
662 &stream->avg_frame_rate));
663 probe_str("time_base",
664 rational_string(val_str, sizeof(val_str), "/",
665 &stream->time_base));
666 probe_str("start_time",
667 time_value_string(val_str, sizeof(val_str),
668 stream->start_time, &stream->time_base));
669 probe_str("duration",
670 time_value_string(val_str, sizeof(val_str),
671 stream->duration, &stream->time_base));
672 if (stream->nb_frames)
673 probe_int("nb_frames", stream->nb_frames);
675 probe_dict(stream->metadata, "tags");
677 probe_object_footer("stream");
680 static void show_format(AVFormatContext *fmt_ctx)
683 int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
685 probe_object_header("format");
686 probe_str("filename", fmt_ctx->filename);
687 probe_int("nb_streams", fmt_ctx->nb_streams);
688 probe_str("format_name", fmt_ctx->iformat->name);
689 probe_str("format_long_name", fmt_ctx->iformat->long_name);
690 probe_str("start_time",
691 time_value_string(val_str, sizeof(val_str),
692 fmt_ctx->start_time, &AV_TIME_BASE_Q));
693 probe_str("duration",
694 time_value_string(val_str, sizeof(val_str),
695 fmt_ctx->duration, &AV_TIME_BASE_Q));
697 size >= 0 ? value_string(val_str, sizeof(val_str),
700 probe_str("bit_rate",
701 value_string(val_str, sizeof(val_str),
702 fmt_ctx->bit_rate, unit_bit_per_second_str));
704 probe_dict(fmt_ctx->metadata, "tags");
706 probe_object_footer("format");
709 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
712 AVFormatContext *fmt_ctx = NULL;
713 AVDictionaryEntry *t;
715 if ((err = avformat_open_input(&fmt_ctx, filename,
716 iformat, &format_opts)) < 0) {
717 print_error(filename, err);
720 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
721 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
722 return AVERROR_OPTION_NOT_FOUND;
726 /* fill the streams in the format context */
727 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
728 print_error(filename, err);
732 av_dump_format(fmt_ctx, 0, filename, 0);
734 /* bind a decoder to each input stream */
735 for (i = 0; i < fmt_ctx->nb_streams; i++) {
736 AVStream *stream = fmt_ctx->streams[i];
739 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
741 "Unsupported codec with id %d for input stream %d\n",
742 stream->codec->codec_id, stream->index);
743 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
744 fprintf(stderr, "Error while opening codec for input stream %d\n",
749 *fmt_ctx_ptr = fmt_ctx;
753 static void close_input_file(AVFormatContext **ctx_ptr)
756 AVFormatContext *fmt_ctx = *ctx_ptr;
758 /* close decoder for each stream */
759 for (i = 0; i < fmt_ctx->nb_streams; i++) {
760 AVStream *stream = fmt_ctx->streams[i];
762 avcodec_close(stream->codec);
764 avformat_close_input(ctx_ptr);
767 static int probe_file(const char *filename)
769 AVFormatContext *fmt_ctx;
772 if ((ret = open_input_file(&fmt_ctx, filename)))
776 show_format(fmt_ctx);
778 if (do_show_streams) {
779 probe_array_header("streams");
780 for (i = 0; i < fmt_ctx->nb_streams; i++)
781 show_stream(fmt_ctx, i);
782 probe_array_footer("streams");
786 show_packets(fmt_ctx);
788 close_input_file(&fmt_ctx);
792 static void show_usage(void)
794 printf("Simple multimedia streams analyzer\n");
795 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
799 static int opt_format(const char *opt, const char *arg)
801 iformat = av_find_input_format(arg);
803 fprintf(stderr, "Unknown input format: %s\n", arg);
804 return AVERROR(EINVAL);
809 static int opt_output_format(const char *opt, const char *arg)
812 if (!strcmp(arg, "json")) {
813 print_header = json_print_header;
814 print_footer = json_print_footer;
815 print_array_header = json_print_array_header;
816 print_array_footer = json_print_array_footer;
817 print_object_header = json_print_object_header;
818 print_object_footer = json_print_object_footer;
820 print_integer = json_print_integer;
821 print_string = json_print_string;
822 } else if (!strcmp(arg, "ini")) {
823 print_header = ini_print_header;
824 print_footer = ini_print_footer;
825 print_array_header = ini_print_array_header;
826 print_object_header = ini_print_object_header;
828 print_integer = ini_print_integer;
829 print_string = ini_print_string;
830 } else if (!strcmp(arg, "old")) {
832 print_object_header = old_print_object_header;
833 print_object_footer = old_print_object_footer;
835 print_string = old_print_string;
837 av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
838 return AVERROR(EINVAL);
843 static int opt_show_format_entry(const char *opt, const char *arg)
846 nb_fmt_entries_to_show++;
849 print_array_header = NULL;
850 print_array_footer = NULL;
851 print_object_header = NULL;
852 print_object_footer = NULL;
854 print_integer = show_format_entry_integer;
855 print_string = show_format_entry_string;
856 av_dict_set(&fmt_entries_to_show, arg, "", 0);
860 static void opt_input_file(void *optctx, const char *arg)
862 if (input_filename) {
864 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
865 arg, input_filename);
868 if (!strcmp(arg, "-"))
870 input_filename = arg;
873 static void show_help(void)
875 av_log_set_callback(log_callback_help);
877 show_help_options(options, "Main options:\n", 0, 0);
879 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
882 static void opt_pretty(void)
885 use_value_prefix = 1;
886 use_byte_value_binary_prefix = 1;
887 use_value_sexagesimal_format = 1;
890 static const OptionDef options[] = {
891 #include "cmdutils_common_opts.h"
892 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
893 { "of", HAS_ARG, {(void*)&opt_output_format}, "output the document either as ini or json", "output_format" },
894 { "unit", OPT_BOOL, {(void*)&show_value_unit},
895 "show unit of the displayed values" },
896 { "prefix", OPT_BOOL, {(void*)&use_value_prefix},
897 "use SI prefixes for the displayed values" },
898 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
899 "use binary prefixes for byte units" },
900 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
901 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
902 { "pretty", 0, {(void*)&opt_pretty},
903 "prettify the format of displayed values, make it more human readable" },
904 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
905 { "show_format_entry", HAS_ARG, {(void*)opt_show_format_entry},
906 "show a particular entry from the format/container info", "entry" },
907 { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
908 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
909 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default},
910 "generic catch all option", "" },
914 static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
916 printf("%.*s", buf_size, buf);
920 #define AVP_BUFFSIZE 4096
922 int main(int argc, char **argv)
925 uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
930 parse_loglevel(argc, argv, options);
932 avformat_network_init();
935 avdevice_register_all();
939 parse_options(NULL, argc, argv, options, opt_input_file);
941 if (!input_filename) {
943 fprintf(stderr, "You have to specify one input file.\n");
945 "Use -h to get full help or, even better, run 'man %s'.\n",
950 probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
951 probe_buf_write, NULL);
956 ret = probe_file(input_filename);
958 avio_flush(probe_out);
959 avio_close(probe_out);
961 avformat_network_deinit();