Seeking should be sample-accurate with most codecs in AVI, MKV, MP4 and FLV.ĭecoding linearly will almost always give correct results, and forward-seeks from trimming should result in at most a few hundred samples of corruption. Image files: Most formats can be opened if seekmode=-1 is set, no animation support.M2TS, TS: Seeking seems to be off a few frames here and there.VOB, MPG: Seeking seems to be off by one or two frames now and then.WMV: Frame accurate(?) but avformat seems to pick keyframes relatively far away.Open-GOP H.264 will sometimes produces corruption when seeking.Transport Streams will not decode reliably without seekmode -1. ![]() ![]() Interlaced H.264 mostly works these days, but seeking may occasionally result in corruption. ![]() AudioDub(FFVideoSource(X), FFAudioSource(X))
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