On "merge cuts" export the video is not cut according to segments markup. Up to 2 seconds delta

[artk42]

On "merge cuts" export the video is not cut according to segments markup.
Up to 2 seconds delta!
In app during play everything is fine. But on export a sufficient delta appears. Idk how I can share proof, send the file and project as bug report?

[CaptainAni187]

That's almost always keyframes. Lossless cutting can only start a segment on a keyframe, so when you export, each cut start gets moved back to the nearest keyframe before it. If your file has a keyframe every 2 seconds or so, that's exactly the up-to-2-seconds drift you're seeing. Playback in the app is exact because it isn't cutting anything.

A few ways around it:

• Turn on smart cut (experimental) in the export options. It re-encodes only the small bit between your cut point and the next keyframe and copies the rest losslessly.
• Place your segment starts on keyframes. LosslessCut has buttons/shortcuts to jump to the previous and next keyframe, so you can snap the cut there.
• If exact cuts matter more than speed, re-encode the file first with more frequent keyframes, or export with re-encoding.

If it's still off with smart cut enabled, then a bug report with the file and project would make sense.