[darcien]

>Of course, you could only re-encode only the GoPs that get broken while keeping the rest intact, and I guess this would be better and a lot faster than re-encoding everything. I don't know if any application tries to do this.

LosslessCut does have experimental support for this partial re-encode called "smart cut" [1]. Since it's using ffmpeg internally, the challenge become how to instruct ffmpeg to do this[2]?

[1]: https://github.com/mifi/lossless-cut/issues/126

[2]: https://github.com/mifi/lossless-cut/issues/1216

[runlevel1]

I suspect QuickTime Player.app's trim (Edit menu > Trim) does this as well when you save the result (as opposed to exporting it).

It's far too fast to be re-encoding the whole video and is too precise to be cutting at the nearest keyframe.

It has limited codec and container support, though.

[CharlesW]

> It's far too fast to be re-encoding the whole video and is too precise to be cutting at the nearest keyframe.

Correct! For example, if you trim the end of a video in the middle of a GOP, it includes the entire GOP as is, but only plays up to the point where you trimmed.