1/* 2 * FFprobe : Simple Media Prober based on the FFmpeg libraries 3 * Copyright (c) 2007-2010 Stefano Sabatini 4 * 5 * This file is part of FFmpeg. 6 * 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. 11 * 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. 16 * 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 20 */ 21 22#include "config.h" 23 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" 29#include "cmdutils.h" 30 31const char program_name[] = "FFprobe"; 32const int program_birth_year = 2007; 33 34static int do_show_format = 0; 35static int do_show_streams = 0; 36 37static int convert_tags = 0; 38static int show_value_unit = 0; 39static int use_value_prefix = 0; 40static int use_byte_value_binary_prefix = 0; 41static int use_value_sexagesimal_format = 0; 42 43/* globals */ 44static const OptionDef options[]; 45 46/* FFprobe context */ 47static const char *input_filename; 48static AVInputFormat *iformat = NULL; 49 50static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" }; 51static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" }; 52 53static const char *unit_second_str = "s" ; 54static const char *unit_hertz_str = "Hz" ; 55static const char *unit_byte_str = "byte" ; 56static const char *unit_bit_per_second_str = "bit/s"; 57 58static char *value_string(char *buf, int buf_size, double val, const char *unit) 59{ 60 if (unit == unit_second_str && use_value_sexagesimal_format) { 61 double secs; 62 int hours, mins; 63 secs = val; 64 mins = (int)secs / 60; 65 secs = secs - mins * 60; 66 hours = mins / 60; 67 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; 71 int index; 72 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]; 78 } else { 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]; 83 } 84 85 snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : ""); 86 } else { 87 snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : ""); 88 } 89 90 return buf; 91} 92 93static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base) 94{ 95 if (val == AV_NOPTS_VALUE) { 96 snprintf(buf, buf_size, "N/A"); 97 } else { 98 value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str); 99 } 100 101 return buf; 102} 103 104static const char *media_type_string(enum AVMediaType media_type) 105{ 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"; 113 } 114} 115 116static void show_stream(AVFormatContext *fmt_ctx, int stream_idx) 117{ 118 AVStream *stream = fmt_ctx->streams[stream_idx]; 119 AVCodecContext *dec_ctx; 120 AVCodec *dec; 121 char val_str[128]; 122 AVMetadataTag *tag = NULL; 123 char a, b, c, d; 124 AVRational display_aspect_ratio; 125 126 printf("[STREAM]\n"); 127 128 printf("index=%d\n", stream->index); 129 130 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); 134 } else { 135 printf("codec_name=unknown\n"); 136 } 137 138 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); 140 141 /* 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); 152 153 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, 164 1024*1024); 165 printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num, 166 display_aspect_ratio.den); 167 } 168 printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ? 169 av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown"); 170 break; 171 172 case AVMEDIA_TYPE_AUDIO: 173 printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str), 174 dec_ctx->sample_rate, 175 unit_hertz_str)); 176 printf("channels=%d\n", dec_ctx->channels); 177 printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id)); 178 break; 179 } 180 } else { 181 printf("codec_type=unknown\n"); 182 } 183 184 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); 197 198 while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) 199 printf("TAG:%s=%s\n", tag->key, tag->value); 200 201 printf("[/STREAM]\n"); 202} 203 204static void show_format(AVFormatContext *fmt_ctx) 205{ 206 AVMetadataTag *tag = NULL; 207 char val_str[128]; 208 209 printf("[FORMAT]\n"); 210 211 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, 216 &AV_TIME_BASE_Q)); 217 printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), fmt_ctx->duration, 218 &AV_TIME_BASE_Q)); 219 printf("size=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->file_size, 220 unit_byte_str)); 221 printf("bit_rate=%s\n", value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate, 222 unit_bit_per_second_str)); 223 224 if (convert_tags) 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); 228 229 printf("[/FORMAT]\n"); 230} 231 232static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename) 233{ 234 int err, i; 235 AVFormatContext *fmt_ctx; 236 237 fmt_ctx = avformat_alloc_context(); 238 239 if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) { 240 print_error(filename, err); 241 return err; 242 } 243 244 /* fill the streams in the format context */ 245 if ((err = av_find_stream_info(fmt_ctx)) < 0) { 246 print_error(filename, err); 247 return err; 248 } 249 250 dump_format(fmt_ctx, 0, filename, 0); 251 252 /* bind a decoder to each input stream */ 253 for (i = 0; i < fmt_ctx->nb_streams; i++) { 254 AVStream *stream = fmt_ctx->streams[i]; 255 AVCodec *codec; 256 257 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", 262 stream->index); 263 } 264 } 265 266 *fmt_ctx_ptr = fmt_ctx; 267 return 0; 268} 269 270static int probe_file(const char *filename) 271{ 272 AVFormatContext *fmt_ctx; 273 int ret, i; 274 275 if ((ret = open_input_file(&fmt_ctx, filename))) 276 return ret; 277 278 if (do_show_streams) 279 for (i = 0; i < fmt_ctx->nb_streams; i++) 280 show_stream(fmt_ctx, i); 281 282 if (do_show_format) 283 show_format(fmt_ctx); 284 285 av_close_input_file(fmt_ctx); 286 return 0; 287} 288 289static void show_usage(void) 290{ 291 printf("Simple multimedia streams analyzer\n"); 292 printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n"); 293 printf("\n"); 294} 295 296static void opt_format(const char *arg) 297{ 298 iformat = av_find_input_format(arg); 299 if (!iformat) { 300 fprintf(stderr, "Unknown input format: %s\n", arg); 301 exit(1); 302 } 303} 304 305static void opt_input_file(const char *arg) 306{ 307 if (input_filename) { 308 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n", 309 arg, input_filename); 310 exit(1); 311 } 312 if (!strcmp(arg, "-")) 313 arg = "pipe:"; 314 input_filename = arg; 315} 316 317static void show_help(void) 318{ 319 show_usage(); 320 show_help_options(options, "Main options:\n", 0, 0); 321 printf("\n"); 322} 323 324static void opt_pretty(void) 325{ 326 show_value_unit = 1; 327 use_value_prefix = 1; 328 use_byte_value_binary_prefix = 1; 329 use_value_sexagesimal_format = 1; 330} 331 332static 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" }, 346 { NULL, }, 347}; 348 349int main(int argc, char **argv) 350{ 351 av_register_all(); 352#if CONFIG_AVDEVICE 353 avdevice_register_all(); 354#endif 355 356 show_banner(); 357 parse_options(argc, argv, options, opt_input_file); 358 359 if (!input_filename) { 360 show_usage(); 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"); 363 exit(1); 364 } 365 366 return probe_file(input_filename); 367} 368