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可以看出av_rescale_q就是调用了av_rescale_q_rnd,只是第四个参数默认为AV_ROUND_NEAR_INF。 int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd){int64_t r = 0;av_assert2(c > 0);av_assert2(b >=0);av_assert2((unsigned)(rnd&~AV_ROUND_PASS_MINMAX)<=5...
if (pkt->pts != AV_NOPTS_VALUE) {pkt->pts = av_rescale_q(pkt->pts, mCtx->streams[pkt->stream_index]->time_base, av_get_time_base_q());}if (pkt->dts != AV_NOPTS_VALUE) {pkt->dts = av_rescale_q(pkt->dts, mCtx->streams[pkt->stream_index]->time_base, av_get_time_...
if (pkt->pts != AV_NOPTS_VALUE) {pkt->pts = av_rescale_q(pkt->pts, mCtx->streams[pkt->stream_index]->time_base, av_get_time_base_q());}if (pkt->dts != AV_NOPTS_VALUE) {pkt->dts = av_rescale_q(pkt->dts, mCtx->streams[pkt->stream_index]->time_base, av_get_time_...
ffmpeg # time_base转换函数av_rescale_q AVRational src_time_base=(AVRational){1,25};AVRational dst_time_base=(AVRational){1,90000};int64_t pts=2;int64_t new_pts=av_rescale_q(pts,src_time_base,dst_time_base);
pkt->pts = av_rescale(viv->audio_sample, astream->time_base.den, astream->time_base.num) / astream->codecpar->sample_rate; pkt->pts = av_rescale_q(viv->audio_sample, av_make_q(1, astream->codecpar->sample_rate), astream->time_base);...
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number_of_samples = av_rescale_q(wav->maxpts - wav->minpts + wav->last_duration,s->streams[0]->time_base,av_make_q(1, s->streams[0]->codecpar->sample_rate));if(s->streams[0]->codecpar->codec_tag != 0x01) { /* Update num_samps in fact chunk */...