2 * ffprobe : Simple Media Prober based on the FFmpeg libraries
3 * Copyright (c) 2007-2010 Stefano Sabatini
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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[] = "ffprobe";
33 const int program_birth_year = 2007;
35 static int do_show_format = 0;
36 static int do_show_packets = 0;
37 static int do_show_streams = 0;
39 static int show_value_unit = 0;
40 static int use_value_prefix = 0;
41 static int use_byte_value_binary_prefix = 0;
42 static int use_value_sexagesimal_format = 0;
44 static char *print_format;
47 static const OptionDef options[];
50 static const char *input_filename;
51 static AVInputFormat *iformat = NULL;
53 static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
54 static const char *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)
66 static char *value_string(char *buf, int buf_size, double val, const char *unit)
68 if (unit == unit_second_str && use_value_sexagesimal_format) {
72 mins = (int)secs / 60;
73 secs = secs - mins * 60;
76 snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
77 } else if (use_value_prefix) {
78 const char *prefix_string;
81 if (unit == unit_byte_str && use_byte_value_binary_prefix) {
82 index = (int) (log(val)/log(2)) / 10;
83 index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
84 val /= pow(2, index*10);
85 prefix_string = binary_unit_prefixes[index];
87 index = (int) (log10(val)) / 3;
88 index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
89 val /= pow(10, index*3);
90 prefix_string = decimal_unit_prefixes[index];
93 snprintf(buf, buf_size, "%.3f%s%s%s", val, prefix_string || show_value_unit ? " " : "",
94 prefix_string, show_value_unit ? unit : "");
96 snprintf(buf, buf_size, "%f%s%s", val, show_value_unit ? " " : "",
97 show_value_unit ? unit : "");
103 static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
105 if (val == AV_NOPTS_VALUE) {
106 snprintf(buf, buf_size, "N/A");
108 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
114 static char *ts_value_string (char *buf, int buf_size, int64_t ts)
116 if (ts == AV_NOPTS_VALUE) {
117 snprintf(buf, buf_size, "N/A");
119 snprintf(buf, buf_size, "%"PRId64, ts);
125 static const char *media_type_string(enum AVMediaType media_type)
127 const char *s = av_get_media_type_string(media_type);
128 return s ? s : "unknown";
134 const char *item_sep; ///< separator between key/value couples
135 const char *items_sep; ///< separator between sets of key/value couples
136 const char *section_sep; ///< separator between sections (streams, packets, ...)
137 const char *header, *footer;
138 void (*print_header)(const char *);
139 void (*print_footer)(const char *);
140 void (*print_int_f)(const char *, int);
141 void (*print_str_f)(const char *, const char *);
142 void (*show_tags)(struct writer *w, AVDictionary *dict);
148 static void default_print_header(const char *section)
150 printf("[%s]\n", section);
153 static void default_print_str(const char *key, const char *value)
155 printf("%s=%s", key, value);
158 static void default_print_int(const char *key, int value)
160 printf("%s=%d", key, value);
163 static void default_print_footer(const char *section)
165 printf("\n[/%s]", section);
176 static char *fast_asprintf(struct print_buf *pbuf, const char *fmt, ...)
182 len = vsnprintf(NULL, 0, fmt, va);
187 if (pbuf->len < len) {
188 char *p = av_realloc(pbuf->s, len + 1);
196 len = vsnprintf(pbuf->s, len + 1, fmt, va);
208 #define print_fmt0(k, f, ...) do { \
209 if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \
210 w->print_str_f(k, pbuf.s); \
212 #define print_fmt( k, f, ...) do { \
214 printf("%s", w->item_sep); \
215 print_fmt0(k, f, __VA_ARGS__); \
218 #define print_int0(k, v) w->print_int_f(k, v)
219 #define print_int( k, v) do { \
221 printf("%s", w->item_sep); \
225 #define print_str0(k, v) print_fmt0(k, "%s", v)
226 #define print_str( k, v) print_fmt (k, "%s", v)
229 static void show_packet(struct writer *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
232 AVStream *st = fmt_ctx->streams[pkt->stream_index];
233 struct print_buf pbuf = {.s = NULL};
236 printf("%s", w->items_sep);
237 w->print_header("PACKET");
238 print_str0("codec_type", media_type_string(st->codec->codec_type));
239 print_int("stream_index", pkt->stream_index);
240 print_str("pts", ts_value_string (val_str, sizeof(val_str), pkt->pts));
241 print_str("pts_time", time_value_string(val_str, sizeof(val_str), pkt->pts, &st->time_base));
242 print_str("dts", ts_value_string (val_str, sizeof(val_str), pkt->dts));
243 print_str("dts_time", time_value_string(val_str, sizeof(val_str), pkt->dts, &st->time_base));
244 print_str("duration", ts_value_string (val_str, sizeof(val_str), pkt->duration));
245 print_str("duration_time", time_value_string(val_str, sizeof(val_str), pkt->duration, &st->time_base));
246 print_str("size", value_string (val_str, sizeof(val_str), pkt->size, unit_byte_str));
247 print_fmt("pos", "%"PRId64, pkt->pos);
248 print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
249 w->print_footer("PACKET");
254 static void show_packets(struct writer *w, AVFormatContext *fmt_ctx)
259 av_init_packet(&pkt);
261 while (!av_read_frame(fmt_ctx, &pkt))
262 show_packet(w, fmt_ctx, &pkt, i++);
265 static void default_show_tags(struct writer *w, AVDictionary *dict)
267 AVDictionaryEntry *tag = NULL;
268 struct print_buf pbuf = {.s = NULL};
269 while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
271 print_str0(tag->key, tag->value);
276 static void show_stream(struct writer *w, AVFormatContext *fmt_ctx, int stream_idx)
278 AVStream *stream = fmt_ctx->streams[stream_idx];
279 AVCodecContext *dec_ctx;
282 AVRational display_aspect_ratio;
283 struct print_buf pbuf = {.s = NULL};
286 printf("%s", w->items_sep);
287 w->print_header("STREAM");
289 print_int0("index", stream->index);
291 if ((dec_ctx = stream->codec)) {
292 if ((dec = dec_ctx->codec)) {
293 print_str("codec_name", dec->name);
294 print_str("codec_long_name", dec->long_name);
296 print_str("codec_name", "unknown");
299 print_str("codec_type", media_type_string(dec_ctx->codec_type));
300 print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den);
302 /* print AVI/FourCC tag */
303 av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
304 print_str("codec_tag_string", val_str);
305 print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
307 switch (dec_ctx->codec_type) {
308 case AVMEDIA_TYPE_VIDEO:
309 print_int("width", dec_ctx->width);
310 print_int("height", dec_ctx->height);
311 print_int("has_b_frames", dec_ctx->has_b_frames);
312 if (dec_ctx->sample_aspect_ratio.num) {
313 print_fmt("sample_aspect_ratio", "%d:%d",
314 dec_ctx->sample_aspect_ratio.num,
315 dec_ctx->sample_aspect_ratio.den);
316 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
317 dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
318 dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
320 print_fmt("display_aspect_ratio", "%d:%d",
321 display_aspect_ratio.num,
322 display_aspect_ratio.den);
324 print_str("pix_fmt", dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
325 print_int("level", dec_ctx->level);
328 case AVMEDIA_TYPE_AUDIO:
329 print_str("sample_rate", value_string(val_str, sizeof(val_str), dec_ctx->sample_rate, unit_hertz_str));
330 print_int("channels", dec_ctx->channels);
331 print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
335 print_str("codec_type", "unknown");
338 if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
339 print_fmt("id=", "0x%x", stream->id);
340 print_fmt("r_frame_rate", "%d/%d", stream->r_frame_rate.num, stream->r_frame_rate.den);
341 print_fmt("avg_frame_rate", "%d/%d", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
342 print_fmt("time_base", "%d/%d", stream->time_base.num, stream->time_base.den);
343 print_str("start_time", time_value_string(val_str, sizeof(val_str), stream->start_time, &stream->time_base));
344 print_str("duration", time_value_string(val_str, sizeof(val_str), stream->duration, &stream->time_base));
345 if (stream->nb_frames)
346 print_fmt("nb_frames", "%"PRId64, stream->nb_frames);
348 w->show_tags(w, stream->metadata);
350 w->print_footer("STREAM");
355 static void show_streams(struct writer *w, AVFormatContext *fmt_ctx)
358 for (i = 0; i < fmt_ctx->nb_streams; i++)
359 show_stream(w, fmt_ctx, i);
362 static void show_format(struct writer *w, AVFormatContext *fmt_ctx)
365 struct print_buf pbuf = {.s = NULL};
367 w->print_header("FORMAT");
368 print_str0("filename", fmt_ctx->filename);
369 print_int("nb_streams", fmt_ctx->nb_streams);
370 print_str("format_name", fmt_ctx->iformat->name);
371 print_str("format_long_name", fmt_ctx->iformat->long_name);
372 print_str("start_time", time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time, &AV_TIME_BASE_Q));
373 print_str("duration", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, &AV_TIME_BASE_Q));
374 print_str("size", value_string(val_str, sizeof(val_str), fmt_ctx->file_size, unit_byte_str));
375 print_str("bit_rate", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate, unit_bit_per_second_str));
376 w->show_tags(w, fmt_ctx->metadata);
377 w->print_footer("FORMAT");
382 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
385 AVFormatContext *fmt_ctx = NULL;
386 AVDictionaryEntry *t;
388 if ((err = avformat_open_input(&fmt_ctx, filename, iformat, &format_opts)) < 0) {
389 print_error(filename, err);
392 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
393 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
394 return AVERROR_OPTION_NOT_FOUND;
398 /* fill the streams in the format context */
399 if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
400 print_error(filename, err);
404 av_dump_format(fmt_ctx, 0, filename, 0);
406 /* bind a decoder to each input stream */
407 for (i = 0; i < fmt_ctx->nb_streams; i++) {
408 AVStream *stream = fmt_ctx->streams[i];
411 if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
412 fprintf(stderr, "Unsupported codec with id %d for input stream %d\n",
413 stream->codec->codec_id, stream->index);
414 } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
415 fprintf(stderr, "Error while opening codec for input stream %d\n",
420 *fmt_ctx_ptr = fmt_ctx;
424 #define WRITER_FUNC(func) \
425 .print_header = func ## _print_header, \
426 .print_footer = func ## _print_footer, \
427 .print_int_f = func ## _print_int, \
428 .print_str_f = func ## _print_str, \
429 .show_tags = func ## _show_tags
431 static struct writer writers[] = {{
437 WRITER_FUNC(default),
441 static int get_writer(const char *name)
446 for (i = 0; i < FF_ARRAY_ELEMS(writers); i++)
447 if (!strcmp(writers[i].name, name))
452 #define SECTION_PRINT(name, left) do { \
453 if (do_show_ ## name) { \
454 show_ ## name (w, fmt_ctx); \
456 printf("%s", w->section_sep); \
460 static int probe_file(const char *filename)
462 AVFormatContext *fmt_ctx;
466 writer_id = get_writer(print_format);
468 fprintf(stderr, "Invalid output format '%s'\n", print_format);
469 return AVERROR(EINVAL);
471 w = &writers[writer_id];
473 if ((ret = open_input_file(&fmt_ctx, filename)))
477 printf("%s", w->header);
479 SECTION_PRINT(packets, do_show_streams || do_show_format);
480 SECTION_PRINT(streams, do_show_format);
481 SECTION_PRINT(format, 0);
484 printf("%s", w->footer);
486 av_close_input_file(fmt_ctx);
490 static void show_usage(void)
492 printf("Simple multimedia streams analyzer\n");
493 printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
497 static int opt_format(const char *opt, const char *arg)
499 iformat = av_find_input_format(arg);
501 fprintf(stderr, "Unknown input format: %s\n", arg);
502 return AVERROR(EINVAL);
507 static void opt_input_file(void *optctx, const char *arg)
509 if (input_filename) {
510 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
511 arg, input_filename);
514 if (!strcmp(arg, "-"))
516 input_filename = arg;
519 static int opt_help(const char *opt, const char *arg)
521 const AVClass *class = avformat_get_class();
522 av_log_set_callback(log_callback_help);
524 show_help_options(options, "Main options:\n", 0, 0);
526 av_opt_show2(&class, NULL,
527 AV_OPT_FLAG_DECODING_PARAM, 0);
531 static int opt_pretty(const char *opt, const char *arg)
534 use_value_prefix = 1;
535 use_byte_value_binary_prefix = 1;
536 use_value_sexagesimal_format = 1;
540 static const OptionDef options[] = {
541 #include "cmdutils_common_opts.h"
542 { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
543 { "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
544 { "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
545 { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
546 "use binary prefixes for byte units" },
547 { "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
548 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
549 { "pretty", 0, {(void*)&opt_pretty},
550 "prettify the format of displayed values, make it more human readable" },
551 { "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
552 { "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
553 { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
554 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
555 { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
559 int main(int argc, char **argv)
566 avdevice_register_all();
570 parse_options(NULL, argc, argv, options, opt_input_file);
572 if (!input_filename) {
574 fprintf(stderr, "You have to specify one input file.\n");
575 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
579 ret = probe_file(input_filename);