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 "libavcodec/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavdevice/avdevice.h"
31 const char program_name
[] = "FFprobe";
32 const int program_birth_year
= 2007;
34 static int do_show_format
= 0;
35 static int do_show_streams
= 0;
37 static int convert_tags
= 0;
38 static int show_value_unit
= 0;
39 static int use_value_prefix
= 0;
40 static int use_byte_value_binary_prefix
= 0;
41 static int use_value_sexagesimal_format
= 0;
44 static const OptionDef options
[];
47 static const char *input_filename
;
48 static AVInputFormat
*iformat
= NULL
;
50 static const char *binary_unit_prefixes
[] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
51 static const char *decimal_unit_prefixes
[] = { "", "K" , "M" , "G" , "T" , "P" };
53 static const char *unit_second_str
= "s" ;
54 static const char *unit_hertz_str
= "Hz" ;
55 static const char *unit_byte_str
= "byte" ;
56 static const char *unit_bit_per_second_str
= "bit/s";
58 static char *value_string(char *buf
, int buf_size
, double val
, const char *unit
)
60 if (unit
== unit_second_str
&& use_value_sexagesimal_format
) {
64 mins
= (int)secs
/ 60;
65 secs
= secs
- mins
* 60;
68 snprintf(buf
, buf_size
, "%d:%02d:%09.6f", hours
, mins
, secs
);
69 } else if (use_value_prefix
) {
70 const char *prefix_string
;
73 if (unit
== unit_byte_str
&& use_byte_value_binary_prefix
) {
74 index
= (int) (log(val
)/log(2)) / 10;
75 index
= av_clip(index
, 0, FF_ARRAY_ELEMS(binary_unit_prefixes
) -1);
76 val
/= pow(2, index
*10);
77 prefix_string
= binary_unit_prefixes
[index
];
79 index
= (int) (log10(val
)) / 3;
80 index
= av_clip(index
, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes
) -1);
81 val
/= pow(10, index
*3);
82 prefix_string
= decimal_unit_prefixes
[index
];
85 snprintf(buf
, buf_size
, "%.3f %s%s", val
, prefix_string
, show_value_unit
? unit
: "");
87 snprintf(buf
, buf_size
, "%f %s", val
, show_value_unit
? unit
: "");
93 static char *time_value_string(char *buf
, int buf_size
, int64_t val
, const AVRational
*time_base
)
95 if (val
== AV_NOPTS_VALUE
) {
96 snprintf(buf
, buf_size
, "N/A");
98 value_string(buf
, buf_size
, val
* av_q2d(*time_base
), unit_second_str
);
104 static const char *media_type_string(enum AVMediaType media_type
)
106 switch (media_type
) {
107 case AVMEDIA_TYPE_VIDEO
: return "video";
108 case AVMEDIA_TYPE_AUDIO
: return "audio";
109 case AVMEDIA_TYPE_DATA
: return "data";
110 case AVMEDIA_TYPE_SUBTITLE
: return "subtitle";
111 case AVMEDIA_TYPE_ATTACHMENT
: return "attachment";
112 default: return "unknown";
116 static void show_stream(AVFormatContext
*fmt_ctx
, int stream_idx
)
118 AVStream
*stream
= fmt_ctx
->streams
[stream_idx
];
119 AVCodecContext
*dec_ctx
;
122 AVMetadataTag
*tag
= NULL
;
124 AVRational display_aspect_ratio
;
126 printf("[STREAM]\n");
128 printf("index=%d\n", stream
->index
);
130 if ((dec_ctx
= stream
->codec
)) {
131 if ((dec
= dec_ctx
->codec
)) {
132 printf("codec_name=%s\n", dec
->name
);
133 printf("codec_long_name=%s\n", dec
->long_name
);
135 printf("codec_name=unknown\n");
138 printf("codec_type=%s\n", media_type_string(dec_ctx
->codec_type
));
139 printf("codec_time_base=%d/%d\n", dec_ctx
->time_base
.num
, dec_ctx
->time_base
.den
);
141 /* print AVI/FourCC tag */
142 a
= dec_ctx
->codec_tag
& 0xff;
143 b
= dec_ctx
->codec_tag
>>8 & 0xff;
144 c
= dec_ctx
->codec_tag
>>16 & 0xff;
145 d
= dec_ctx
->codec_tag
>>24 & 0xff;
146 printf("codec_tag_string=");
147 if (isprint(a
)) printf("%c", a
); else printf("[%d]", a
);
148 if (isprint(b
)) printf("%c", b
); else printf("[%d]", b
);
149 if (isprint(c
)) printf("%c", c
); else printf("[%d]", c
);
150 if (isprint(d
)) printf("%c", d
); else printf("[%d]", d
);
151 printf("\ncodec_tag=0x%04x\n", dec_ctx
->codec_tag
);
153 switch (dec_ctx
->codec_type
) {
154 case AVMEDIA_TYPE_VIDEO
:
155 printf("width=%d\n", dec_ctx
->width
);
156 printf("height=%d\n", dec_ctx
->height
);
157 printf("has_b_frames=%d\n", dec_ctx
->has_b_frames
);
158 if (dec_ctx
->sample_aspect_ratio
.num
) {
159 printf("sample_aspect_ratio=%d:%d\n", dec_ctx
->sample_aspect_ratio
.num
,
160 dec_ctx
->sample_aspect_ratio
.den
);
161 av_reduce(&display_aspect_ratio
.num
, &display_aspect_ratio
.den
,
162 dec_ctx
->width
* dec_ctx
->sample_aspect_ratio
.num
,
163 dec_ctx
->height
* dec_ctx
->sample_aspect_ratio
.den
,
165 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio
.num
,
166 display_aspect_ratio
.den
);
168 printf("pix_fmt=%s\n", dec_ctx
->pix_fmt
!= PIX_FMT_NONE
?
169 av_pix_fmt_descriptors
[dec_ctx
->pix_fmt
].name
: "unknown");
172 case AVMEDIA_TYPE_AUDIO
:
173 printf("sample_rate=%s\n", value_string(val_str
, sizeof(val_str
),
174 dec_ctx
->sample_rate
,
176 printf("channels=%d\n", dec_ctx
->channels
);
177 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx
->codec_id
));
181 printf("codec_type=unknown\n");
184 if (fmt_ctx
->iformat
->flags
& AVFMT_SHOW_IDS
)
185 printf("id=0x%x\n", stream
->id
);
186 printf("r_frame_rate=%d/%d\n", stream
->r_frame_rate
.num
, stream
->r_frame_rate
.den
);
187 printf("avg_frame_rate=%d/%d\n", stream
->avg_frame_rate
.num
, stream
->avg_frame_rate
.den
);
188 printf("time_base=%d/%d\n", stream
->time_base
.num
, stream
->time_base
.den
);
189 if (stream
->language
[0])
190 printf("language=%s\n", stream
->language
);
191 printf("start_time=%s\n", time_value_string(val_str
, sizeof(val_str
), stream
->start_time
,
192 &stream
->time_base
));
193 printf("duration=%s\n", time_value_string(val_str
, sizeof(val_str
), stream
->duration
,
194 &stream
->time_base
));
195 if (stream
->nb_frames
)
196 printf("nb_frames=%"PRId64
"\n", stream
->nb_frames
);
198 while ((tag
= av_metadata_get(stream
->metadata
, "", tag
, AV_METADATA_IGNORE_SUFFIX
)))
199 printf("TAG:%s=%s\n", tag
->key
, tag
->value
);
201 printf("[/STREAM]\n");
204 static void show_format(AVFormatContext
*fmt_ctx
)
206 AVMetadataTag
*tag
= NULL
;
209 printf("[FORMAT]\n");
211 printf("filename=%s\n", fmt_ctx
->filename
);
212 printf("nb_streams=%d\n", fmt_ctx
->nb_streams
);
213 printf("format_name=%s\n", fmt_ctx
->iformat
->name
);
214 printf("format_long_name=%s\n", fmt_ctx
->iformat
->long_name
);
215 printf("start_time=%s\n", time_value_string(val_str
, sizeof(val_str
), fmt_ctx
->start_time
,
217 printf("duration=%s\n", time_value_string(val_str
, sizeof(val_str
), fmt_ctx
->duration
,
219 printf("size=%s\n", value_string(val_str
, sizeof(val_str
), fmt_ctx
->file_size
,
221 printf("bit_rate=%s\n", value_string(val_str
, sizeof(val_str
), fmt_ctx
->bit_rate
,
222 unit_bit_per_second_str
));
225 av_metadata_conv(fmt_ctx
, NULL
, fmt_ctx
->iformat
->metadata_conv
);
226 while ((tag
= av_metadata_get(fmt_ctx
->metadata
, "", tag
, AV_METADATA_IGNORE_SUFFIX
)))
227 printf("TAG:%s=%s\n", tag
->key
, tag
->value
);
229 printf("[/FORMAT]\n");
232 static int open_input_file(AVFormatContext
**fmt_ctx_ptr
, const char *filename
)
235 AVFormatContext
*fmt_ctx
;
237 fmt_ctx
= avformat_alloc_context();
239 if ((err
= av_open_input_file(&fmt_ctx
, filename
, iformat
, 0, NULL
)) < 0) {
240 print_error(filename
, err
);
244 /* fill the streams in the format context */
245 if ((err
= av_find_stream_info(fmt_ctx
)) < 0) {
246 print_error(filename
, err
);
250 dump_format(fmt_ctx
, 0, filename
, 0);
252 /* bind a decoder to each input stream */
253 for (i
= 0; i
< fmt_ctx
->nb_streams
; i
++) {
254 AVStream
*stream
= fmt_ctx
->streams
[i
];
257 if (!(codec
= avcodec_find_decoder(stream
->codec
->codec_id
))) {
258 fprintf(stderr
, "Unsupported codec (id=%d) for input stream %d\n",
259 stream
->codec
->codec_id
, stream
->index
);
260 } else if (avcodec_open(stream
->codec
, codec
) < 0) {
261 fprintf(stderr
, "Error while opening codec for input stream %d\n",
266 *fmt_ctx_ptr
= fmt_ctx
;
270 static int probe_file(const char *filename
)
272 AVFormatContext
*fmt_ctx
;
275 if ((ret
= open_input_file(&fmt_ctx
, filename
)))
279 for (i
= 0; i
< fmt_ctx
->nb_streams
; i
++)
280 show_stream(fmt_ctx
, i
);
283 show_format(fmt_ctx
);
285 av_close_input_file(fmt_ctx
);
289 static void show_usage(void)
291 printf("Simple multimedia streams analyzer\n");
292 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
296 static void opt_format(const char *arg
)
298 iformat
= av_find_input_format(arg
);
300 fprintf(stderr
, "Unknown input format: %s\n", arg
);
305 static void opt_input_file(const char *arg
)
307 if (input_filename
) {
308 fprintf(stderr
, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
309 arg
, input_filename
);
312 if (!strcmp(arg
, "-"))
314 input_filename
= arg
;
317 static void show_help(void)
320 show_help_options(options
, "Main options:\n", 0, 0);
324 static void opt_pretty(void)
327 use_value_prefix
= 1;
328 use_byte_value_binary_prefix
= 1;
329 use_value_sexagesimal_format
= 1;
332 static const OptionDef options
[] = {
333 #include "cmdutils_common_opts.h"
334 { "convert_tags", OPT_BOOL
, {(void*)&convert_tags
}, "convert tag names to the FFmpeg generic tag names" },
335 { "f", HAS_ARG
, {(void*)opt_format
}, "force format", "format" },
336 { "unit", OPT_BOOL
, {(void*)&show_value_unit
}, "show unit of the displayed values" },
337 { "prefix", OPT_BOOL
, {(void*)&use_value_prefix
}, "use SI prefixes for the displayed values" },
338 { "byte_binary_prefix", OPT_BOOL
, {(void*)&use_byte_value_binary_prefix
},
339 "use binary prefixes for byte units" },
340 { "sexagesimal", OPT_BOOL
, {(void*)&use_value_sexagesimal_format
},
341 "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
342 { "pretty", 0, {(void*)&opt_pretty
},
343 "prettify the format of displayed values, make it more human readable" },
344 { "show_format", OPT_BOOL
, {(void*)&do_show_format
} , "show format/container info" },
345 { "show_streams", OPT_BOOL
, {(void*)&do_show_streams
}, "show streams info" },
349 int main(int argc
, char **argv
)
353 avdevice_register_all();
357 parse_options(argc
, argv
, options
, opt_input_file
);
359 if (!input_filename
) {
361 fprintf(stderr
, "You have to specify one input file.\n");
362 fprintf(stderr
, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
366 return probe_file(input_filename
);