Cut at the nearest audio (key-) frame instead of the next one

[DreckSoft]

I have a lot of issues to go through, so in order to make it easier for me to help you, I ask that you please try these things first

• Check out all the menus and keyboard shortcuts. Maybe the feature already exists?
• Try with the newest version from GitHub
• Read the documentation and FAQ, Known issues, Troubleshooting to see if the feature already exists
• See if someone already suggested this under Issues or Discussions

Description

I'm using LosslessCut to cut AC3/EAC3 files to sync audio. Those are using 32ms frames at 48k sampling rate. If I cut 0.000-2.568 the closest cut would be 2.560 seconds, so an 8ms difference. LosslessCut however produces a file with 2.592s, leaving a 24ms difference. This adds up over various cuts. So the cuts should be made on the closest keyframe. This will usually result in a +- 0ms result over various cuts.

As an alternate option to solve this a setting "snap to xx ms" would be helpful. So one can only enter a multiple of xx ms as cut points.

[mifi]

Is this keyframe cut or normal cut mode? Not sure how to control this, and not sure how exactly ffmpeg deals with keyframes when seeking in audio. See #1216

[DreckSoft]

In Keyframe cut mode. According to the description it should be the nearest key frame but it is always the next.