Hello, I'm trying to accurately (not just nearest keyframe) cut out a subtrack of an mp4 without having to re-encode the *entire* subtrack.
It seems like overkill to re-encode everything just to get a few additional seconds of accuracy at the beginning. Is there a good way to avoid this? I'm perfectly happy to re-encode a bit of the subtrack, I just don't want to have to re-encode everything. My current thought was to re-encode from an accurate start point to the next keyframe, then copy from the keyframe to the end of the subtrack, and then concatenate the pieces somehow. So far I haven't had much luck with this. Thanks in advance!
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