static void show_stream(AVFormatContext *fmt_ctx, int stream_idx) { AVStream *stream = fmt_ctx->streams[stream_idx]; AVCodecContext *dec_ctx; AVCodec *dec; char val_str[128]; AVDictionaryEntry *tag = NULL; AVRational display_aspect_ratio; printf("[STREAM]\n"); printf("index=%d\n", stream->index); if ((dec_ctx = stream->codec)) { if ((dec = dec_ctx->codec)) { printf("codec_name=%s\n", dec->name); printf("codec_long_name=%s\n", dec->long_name); } else { printf("codec_name=unknown\n"); } printf("codec_type=%s\n", media_type_string(dec_ctx->codec_type)); printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den); /* print AVI/FourCC tag */ av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag); printf("codec_tag_string=%s\n", val_str); printf("codec_tag=0x%04x\n", dec_ctx->codec_tag); switch (dec_ctx->codec_type) { case AVMEDIA_TYPE_VIDEO: printf("width=%d\n", dec_ctx->width); printf("height=%d\n", dec_ctx->height); printf("has_b_frames=%d\n", dec_ctx->has_b_frames); if (dec_ctx->sample_aspect_ratio.num) { printf("sample_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num, dec_ctx->sample_aspect_ratio.den); av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, dec_ctx->width * dec_ctx->sample_aspect_ratio.num, dec_ctx->height * dec_ctx->sample_aspect_ratio.den, 1024*1024); printf("display_aspect_ratio=%d:%d\n", display_aspect_ratio.num, display_aspect_ratio.den); } printf("pix_fmt=%s\n", dec_ctx->pix_fmt != PIX_FMT_NONE ? av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown"); printf("level=%d\n", dec_ctx->level); break; case AVMEDIA_TYPE_AUDIO: printf("sample_rate=%s\n", value_string(val_str, sizeof(val_str), dec_ctx->sample_rate, unit_hertz_str)); printf("channels=%d\n", dec_ctx->channels); printf("bits_per_sample=%d\n", av_get_bits_per_sample(dec_ctx->codec_id)); break; } } else { printf("codec_type=unknown\n"); } if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) printf("id=0x%x\n", stream->id); printf("r_frame_rate=%d/%d\n", stream->r_frame_rate.num, stream->r_frame_rate.den); printf("avg_frame_rate=%d/%d\n", stream->avg_frame_rate.num, stream->avg_frame_rate.den); printf("time_base=%d/%d\n", stream->time_base.num, stream->time_base.den); printf("start_time=%s\n", time_value_string(val_str, sizeof(val_str), stream->start_time, &stream->time_base)); printf("duration=%s\n", time_value_string(val_str, sizeof(val_str), stream->duration, &stream->time_base)); if (stream->nb_frames) printf("nb_frames=%"PRId64"\n", stream->nb_frames); while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) printf("TAG:%s=%s\n", tag->key, tag->value); printf("[/STREAM]\n"); }