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 "libavutil/libm.h"
30 #include "libavdevice/avdevice.h"
33 const char program_name[] = "avprobe";
34 const int program_birth_year = 2007;
36 static int do_show_format = 0;
37 static AVDictionary *fmt_entries_to_show = NULL;
38 static int nb_fmt_entries_to_show;
39 static int do_show_packets = 0;
40 static int do_show_streams = 0;
42 static int show_value_unit = 0;
43 static int use_value_prefix = 0;
44 static int use_byte_value_binary_prefix = 0;
45 static int use_value_sexagesimal_format = 0;
48 static const OptionDef *options;
51 static const char *input_filename;
52 static AVInputFormat *iformat = NULL;
54 static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
55 static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
57 static const char unit_second_str[] = "s" ;
58 static const char unit_hertz_str[] = "Hz" ;
59 static const char unit_byte_str[] = "byte" ;
60 static const char unit_bit_per_second_str[] = "bit/s";
62 static void exit_program(void)
64 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;
96 void (*print_header)(void);
97 void (*print_footer)(void);
99 void (*print_array_header) (const char *name);
100 void (*print_array_footer) (const char *name);
101 void (*print_object_header)(const char *name);
102 void (*print_object_footer)(const char *name);
104 void (*print_integer) (const char *key, int64_t value);
105 void (*print_string) (const char *key, const char *value);
108 static AVIOContext *probe_out = NULL;
109 static OutputContext octx;
110 #define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
113 * Default format, INI
115 * - all key and values are utf8
116 * - '.' is the subgroup separator
117 * - newlines and the following characters are escaped
118 * - '\' is the escape character
119 * - '#' is the comment
120 * - '=' is the key/value separators
121 * - ':' is not used but usually parsed as key/value separator
124 static void ini_print_header(void)
126 avio_printf(probe_out, "# avprobe output\n\n");
128 static void ini_print_footer(void)
130 avio_w8(probe_out, '\n');
133 static void ini_escape_print(const char *s)
140 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
141 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
142 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
143 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
144 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
148 case ':' : avio_w8(probe_out, '\\');
150 if ((unsigned char)c < 32)
151 avio_printf(probe_out, "\\x00%02x", c & 0xff);
153 avio_w8(probe_out, c);
159 static void ini_print_array_header(const char *name)
161 if (octx.prefix[octx.level -1].nb_elems)
162 avio_printf(probe_out, "\n");
165 static void ini_print_object_header(const char *name)
168 ProbeElement *el = octx.prefix + octx.level -1;
171 avio_printf(probe_out, "\n");
173 avio_printf(probe_out, "[");
175 for (i = 1; i < octx.level; i++) {
176 el = octx.prefix + i;
177 avio_printf(probe_out, "%s.", el->name);
179 avio_printf(probe_out, "%"PRId64".", el->index);
182 avio_printf(probe_out, "%s", name);
183 if (el && el->type == ARRAY)
184 avio_printf(probe_out, ".%"PRId64"", el->nb_elems);
185 avio_printf(probe_out, "]\n");
188 static void ini_print_integer(const char *key, int64_t value)
190 ini_escape_print(key);
191 avio_printf(probe_out, "=%"PRId64"\n", value);
195 static void ini_print_string(const char *key, const char *value)
197 ini_escape_print(key);
198 avio_printf(probe_out, "=");
199 ini_escape_print(value);
200 avio_w8(probe_out, '\n');
204 * Alternate format, JSON
207 static void json_print_header(void)
209 avio_printf(probe_out, "{");
211 static void json_print_footer(void)
213 avio_printf(probe_out, "}\n");
216 static void json_print_array_header(const char *name)
218 if (octx.prefix[octx.level -1].nb_elems)
219 avio_printf(probe_out, ",\n");
221 avio_printf(probe_out, "\"%s\" : ", name);
222 avio_printf(probe_out, "[\n");
225 static void json_print_array_footer(const char *name)
227 avio_printf(probe_out, "\n");
229 avio_printf(probe_out, "]");
232 static void json_print_object_header(const char *name)
234 if (octx.prefix[octx.level -1].nb_elems)
235 avio_printf(probe_out, ",\n");
237 if (octx.prefix[octx.level -1].type == OBJECT)
238 avio_printf(probe_out, "\"%s\" : ", name);
239 avio_printf(probe_out, "{\n");
242 static void json_print_object_footer(const char *name)
244 avio_printf(probe_out, "\n");
246 avio_printf(probe_out, "}");
249 static void json_print_integer(const char *key, int64_t value)
251 if (octx.prefix[octx.level -1].nb_elems)
252 avio_printf(probe_out, ",\n");
254 avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
257 static void json_escape_print(const char *s)
264 case '\r': avio_printf(probe_out, "%s", "\\r"); break;
265 case '\n': avio_printf(probe_out, "%s", "\\n"); break;
266 case '\f': avio_printf(probe_out, "%s", "\\f"); break;
267 case '\b': avio_printf(probe_out, "%s", "\\b"); break;
268 case '\t': avio_printf(probe_out, "%s", "\\t"); break;
270 case '"' : avio_w8(probe_out, '\\');
272 if ((unsigned char)c < 32)
273 avio_printf(probe_out, "\\u00%02x", c & 0xff);
275 avio_w8(probe_out, c);
281 static void json_print_string(const char *key, const char *value)
283 if (octx.prefix[octx.level -1].nb_elems)
284 avio_printf(probe_out, ",\n");
286 avio_w8(probe_out, '\"');
287 json_escape_print(key);
288 avio_printf(probe_out, "\" : \"");
289 json_escape_print(value);
290 avio_w8(probe_out, '\"');
294 * old-style pseudo-INI
296 static void old_print_object_header(const char *name)
300 if (!strcmp(name, "tags"))
303 str = p = av_strdup(name);
309 avio_printf(probe_out, "[%s]\n", str);
313 static void old_print_object_footer(const char *name)
317 if (!strcmp(name, "tags"))
320 str = p = av_strdup(name);
326 avio_printf(probe_out, "[/%s]\n", str);
330 static void old_print_string(const char *key, const char *value)
332 if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
333 avio_printf(probe_out, "TAG:");
334 ini_print_string(key, value);
338 * Simple Formatter for single entries.
341 static void show_format_entry_integer(const char *key, int64_t value)
343 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
344 if (nb_fmt_entries_to_show > 1)
345 avio_printf(probe_out, "%s=", key);
346 avio_printf(probe_out, "%"PRId64"\n", value);
350 static void show_format_entry_string(const char *key, const char *value)
352 if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
353 if (nb_fmt_entries_to_show > 1)
354 avio_printf(probe_out, "%s=", key);
355 avio_printf(probe_out, "%s\n", value);
359 static void probe_group_enter(const char *name, int type)
364 av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
366 if (!octx.prefix || !name) {
367 fprintf(stderr, "Out of memory\n");
372 ProbeElement *parent = octx.prefix + octx.level -1;
373 if (parent->type == ARRAY)
374 count = parent->nb_elems;
378 octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
381 static void probe_group_leave(void)
386 static void probe_header(void)
388 if (octx.print_header)
390 probe_group_enter("root", OBJECT);
393 static void probe_footer(void)
395 if (octx.print_footer)
401 static void probe_array_header(const char *name)
403 if (octx.print_array_header)
404 octx.print_array_header(name);
406 probe_group_enter(name, ARRAY);
409 static void probe_array_footer(const char *name)
412 if (octx.print_array_footer)
413 octx.print_array_footer(name);
416 static void probe_object_header(const char *name)
418 if (octx.print_object_header)
419 octx.print_object_header(name);
421 probe_group_enter(name, OBJECT);
424 static void probe_object_footer(const char *name)
427 if (octx.print_object_footer)
428 octx.print_object_footer(name);
431 static void probe_int(const char *key, int64_t value)
433 octx.print_integer(key, value);
434 octx.prefix[octx.level -1].nb_elems++;
437 static void probe_str(const char *key, const char *value)
439 octx.print_string(key, value);
440 octx.prefix[octx.level -1].nb_elems++;
443 static void probe_dict(AVDictionary *dict, const char *name)
445 AVDictionaryEntry *entry = NULL;
448 probe_object_header(name);
449 while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
450 probe_str(entry->key, entry->value);
452 probe_object_footer(name);
455 static char *value_string(char *buf, int buf_size, double val, const char *unit)
457 if (unit == unit_second_str && use_value_sexagesimal_format) {
461 mins = (int)secs / 60;
462 secs = secs - mins * 60;
465 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
466 } else if (use_value_prefix) {
467 const char *prefix_string;
470 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
471 index = (int) log2(val) / 10;
472 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
473 val /= pow(2, index * 10);
474 prefix_string = binary_unit_prefixes[index];
476 index = (int) (log10(val)) / 3;
477 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
478 val /= pow(10, index * 3);
479 prefix_string = decimal_unit_prefixes[index];
481 snprintf(buf, buf_size, "%.*f%s%s",
484 show_value_unit ? unit : "");
486 snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : "");
492 static char *time_value_string(char *buf, int buf_size, int64_t val,
493 const AVRational *time_base)
495 if (val == AV_NOPTS_VALUE) {
496 snprintf(buf, buf_size, "N/A");
498 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
504 static char *ts_value_string(char *buf, int buf_size, int64_t ts)
506 if (ts == AV_NOPTS_VALUE) {
507 snprintf(buf, buf_size, "N/A");
509 snprintf(buf, buf_size, "%"PRId64, ts);
515 static char *rational_string(char *buf, int buf_size, const char *sep,
516 const AVRational *rat)
518 snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
522 static char *tag_string(char *buf, int buf_size, int tag)
524 snprintf(buf, buf_size, "0x%04x", tag);
530 static const char *media_type_string(enum AVMediaType media_type)
532 switch (media_type) {
533 case AVMEDIA_TYPE_VIDEO: return "video";
534 case AVMEDIA_TYPE_AUDIO: return "audio";
535 case AVMEDIA_TYPE_DATA: return "data";
536 case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
537 case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
538 default: return "unknown";
542 static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
545 AVStream *st = fmt_ctx->streams[pkt->stream_index];
547 probe_object_header("packet");
548 probe_str("codec_type", media_type_string(st->codec->codec_type));
549 probe_int("stream_index", pkt->stream_index);
550 probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts));
551 probe_str("pts_time", time_value_string(val_str, sizeof(val_str),
552 pkt->pts, &st->time_base));
553 probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts));
554 probe_str("dts_time", time_value_string(val_str, sizeof(val_str),
555 pkt->dts, &st->time_base));
556 probe_str("duration", ts_value_string(val_str, sizeof(val_str),
558 probe_str("duration_time", time_value_string(val_str, sizeof(val_str),
561 probe_str("size", value_string(val_str, sizeof(val_str),
562 pkt->size, unit_byte_str));
563 probe_int("pos", pkt->pos);
564 probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_");
565 probe_object_footer("packet");
568 static void show_packets(AVFormatContext *fmt_ctx)
572 av_init_packet(&pkt);
573 probe_array_header("packets");
574 while (!av_read_frame(fmt_ctx, &pkt))
575 show_packet(fmt_ctx, &pkt);
576 probe_array_footer("packets");
579 static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
581 AVStream *stream = fmt_ctx->streams[stream_idx];
582 AVCodecContext *dec_ctx;
586 AVRational display_aspect_ratio;
587 const AVPixFmtDescriptor *desc;
589 probe_object_header("stream");
591 probe_int("index", stream->index);
593 if ((dec_ctx = stream->codec)) {
594 if ((dec = dec_ctx->codec)) {
595 probe_str("codec_name", dec->name);
596 probe_str("codec_long_name", dec->long_name);
598 probe_str("codec_name", "unknown");
601 probe_str("codec_type", media_type_string(dec_ctx->codec_type));
602 probe_str("codec_time_base",
603 rational_string(val_str, sizeof(val_str),
604 "/", &dec_ctx->time_base));
606 /* print AVI/FourCC tag */
607 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
608 probe_str("codec_tag_string", val_str);
609 probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
610 dec_ctx->codec_tag));
612 /* print profile, if there is one */
613 if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
614 probe_str("profile", profile);
616 switch (dec_ctx->codec_type) {
617 case AVMEDIA_TYPE_VIDEO:
618 probe_int("width", dec_ctx->width);
619 probe_int("height", dec_ctx->height);
620 probe_int("has_b_frames", dec_ctx->has_b_frames);
621 if (dec_ctx->sample_aspect_ratio.num) {
622 probe_str("sample_aspect_ratio",
623 rational_string(val_str, sizeof(val_str), ":",
624 &dec_ctx->sample_aspect_ratio));
625 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
626 dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
627 dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
629 probe_str("display_aspect_ratio",
630 rational_string(val_str, sizeof(val_str), ":",
631 &display_aspect_ratio));
633 desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
634 probe_str("pix_fmt", desc ? desc->name : "unknown");
635 probe_int("level", dec_ctx->level);
638 case AVMEDIA_TYPE_AUDIO:
639 probe_str("sample_rate",
640 value_string(val_str, sizeof(val_str),
641 dec_ctx->sample_rate,
643 probe_int("channels", dec_ctx->channels);
644 probe_int("bits_per_sample",
645 av_get_bits_per_sample(dec_ctx->codec_id));
649 probe_str("codec_type", "unknown");
652 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
653 probe_int("id", stream->id);
654 probe_str("avg_frame_rate",
655 rational_string(val_str, sizeof(val_str), "/",
656 &stream->avg_frame_rate));
657 probe_str("time_base",
658 rational_string(val_str, sizeof(val_str), "/",
659 &stream->time_base));
660 probe_str("start_time",
661 time_value_string(val_str, sizeof(val_str),
662 stream->start_time, &stream->time_base));
663 probe_str("duration",
664 time_value_string(val_str, sizeof(val_str),
665 stream->duration, &stream->time_base));
666 if (stream->nb_frames)
667 probe_int("nb_frames", stream->nb_frames);
669 probe_dict(stream->metadata, "tags");
671 probe_object_footer("stream");
674 static void show_format(AVFormatContext *fmt_ctx)
677 int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
679 probe_object_header("format");
680 probe_str("filename", fmt_ctx->filename);
681 probe_int("nb_streams", fmt_ctx->nb_streams);
682 probe_str("format_name", fmt_ctx->iformat->name);
683 probe_str("format_long_name", fmt_ctx->iformat->long_name);
684 probe_str("start_time",
685 time_value_string(val_str, sizeof(val_str),
686 fmt_ctx->start_time, &AV_TIME_BASE_Q));
687 probe_str("duration",
688 time_value_string(val_str, sizeof(val_str),
689 fmt_ctx->duration, &AV_TIME_BASE_Q));
691 size >= 0 ? value_string(val_str, sizeof(val_str),
694 probe_str("bit_rate",
695 value_string(val_str, sizeof(val_str),
696 fmt_ctx->bit_rate, unit_bit_per_second_str));
698 probe_dict(fmt_ctx->metadata, "tags");
700 probe_object_footer("format");
703 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
706 AVFormatContext *fmt_ctx = NULL;
707 AVDictionaryEntry *t;
709 if ((err = avformat_open_input(&fmt_ctx, filename,
710 iformat, &format_opts)) < 0) {
711 print_error(filename, err);
714 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
715 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
716 return AVERROR_OPTION_NOT_FOUND;
720 /* fill the streams in the format context */
721 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
722 print_error(filename, err);
726 av_dump_format(fmt_ctx, 0, filename, 0);
728 /* bind a decoder to each input stream */
729 for (i = 0; i < fmt_ctx->nb_streams; i++) {
730 AVStream *stream = fmt_ctx->streams[i];
733 if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
734 fprintf(stderr, "Failed to probe codec for input stream %d\n",
736 } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
738 "Unsupported codec with id %d for input stream %d\n",
739 stream->codec->codec_id, stream->index);
740 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
741 fprintf(stderr, "Error while opening codec for input stream %d\n",
746 *fmt_ctx_ptr = fmt_ctx;
750 static void close_input_file(AVFormatContext **ctx_ptr)
753 AVFormatContext *fmt_ctx = *ctx_ptr;
755 /* close decoder for each stream */
756 for (i = 0; i < fmt_ctx->nb_streams; i++) {
757 AVStream *stream = fmt_ctx->streams[i];
759 avcodec_close(stream->codec);
761 avformat_close_input(ctx_ptr);
764 static int probe_file(const char *filename)
766 AVFormatContext *fmt_ctx;
769 if ((ret = open_input_file(&fmt_ctx, filename)))
773 show_format(fmt_ctx);
775 if (do_show_streams) {
776 probe_array_header("streams");
777 for (i = 0; i < fmt_ctx->nb_streams; i++)
778 show_stream(fmt_ctx, i);
779 probe_array_footer("streams");
783 show_packets(fmt_ctx);
785 close_input_file(&fmt_ctx);
789 static void show_usage(void)
791 printf("Simple multimedia streams analyzer\n");
792 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
796 static int opt_format(void *optctx, const char *opt, const char *arg)
798 iformat = av_find_input_format(arg);
800 fprintf(stderr, "Unknown input format: %s\n", arg);
801 return AVERROR(EINVAL);
806 static int opt_output_format(void *optctx, const char *opt, const char *arg)
809 if (!strcmp(arg, "json")) {
810 octx.print_header = json_print_header;
811 octx.print_footer = json_print_footer;
812 octx.print_array_header = json_print_array_header;
813 octx.print_array_footer = json_print_array_footer;
814 octx.print_object_header = json_print_object_header;
815 octx.print_object_footer = json_print_object_footer;
817 octx.print_integer = json_print_integer;
818 octx.print_string = json_print_string;
819 } else if (!strcmp(arg, "ini")) {
820 octx.print_header = ini_print_header;
821 octx.print_footer = ini_print_footer;
822 octx.print_array_header = ini_print_array_header;
823 octx.print_object_header = ini_print_object_header;
825 octx.print_integer = ini_print_integer;
826 octx.print_string = ini_print_string;
827 } else if (!strcmp(arg, "old")) {
828 octx.print_header = NULL;
829 octx.print_object_header = old_print_object_header;
830 octx.print_object_footer = old_print_object_footer;
832 octx.print_string = old_print_string;
834 av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
835 return AVERROR(EINVAL);
840 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
843 nb_fmt_entries_to_show++;
844 octx.print_header = NULL;
845 octx.print_footer = NULL;
846 octx.print_array_header = NULL;
847 octx.print_array_footer = NULL;
848 octx.print_object_header = NULL;
849 octx.print_object_footer = NULL;
851 octx.print_integer = show_format_entry_integer;
852 octx.print_string = show_format_entry_string;
853 av_dict_set(&fmt_entries_to_show, arg, "", 0);
857 static void opt_input_file(void *optctx, const char *arg)
859 if (input_filename) {
861 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
862 arg, input_filename);
865 if (!strcmp(arg, "-"))
867 input_filename = arg;
870 void show_help_default(const char *opt, const char *arg)
872 av_log_set_callback(log_callback_help);
874 show_help_options(options, "Main options:", 0, 0, 0);
876 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
879 static int opt_pretty(void *optctx, const char *opt, const char *arg)
882 use_value_prefix = 1;
883 use_byte_value_binary_prefix = 1;
884 use_value_sexagesimal_format = 1;
888 static const OptionDef real_options[] = {
889 #include "cmdutils_common_opts.h"
890 { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
891 { "of", HAS_ARG, {.func_arg = opt_output_format}, "output the document either as ini or json", "output_format" },
892 { "unit", OPT_BOOL, {&show_value_unit},
893 "show unit of the displayed values" },
894 { "prefix", OPT_BOOL, {&use_value_prefix},
895 "use SI prefixes for the displayed values" },
896 { "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
897 "use binary prefixes for byte units" },
898 { "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format},
899 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
900 { "pretty", 0, {.func_arg = opt_pretty},
901 "prettify the format of displayed values, make it more human readable" },
902 { "show_format", OPT_BOOL, {&do_show_format} , "show format/container info" },
903 { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
904 "show a particular entry from the format/container info", "entry" },
905 { "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" },
906 { "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" },
907 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default},
908 "generic catch all option", "" },
912 static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
914 printf("%.*s", buf_size, buf);
918 #define AVP_BUFFSIZE 4096
920 int main(int argc, char **argv)
923 uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
928 atexit(exit_program);
930 options = real_options;
931 parse_loglevel(argc, argv, options);
933 avformat_network_init();
936 avdevice_register_all();
941 octx.print_header = ini_print_header;
942 octx.print_footer = ini_print_footer;
944 octx.print_array_header = ini_print_array_header;
945 octx.print_object_header = ini_print_object_header;
947 octx.print_integer = ini_print_integer;
948 octx.print_string = ini_print_string;
950 parse_options(NULL, argc, argv, options, opt_input_file);
952 if (!input_filename) {
954 fprintf(stderr, "You have to specify one input file.\n");
956 "Use -h to get full help or, even better, run 'man %s'.\n",
961 probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
962 probe_buf_write, NULL);
967 ret = probe_file(input_filename);
969 avio_flush(probe_out);
970 avio_close(probe_out);
972 avformat_network_deinit();