[defrost]

There's a particular occasional need for easy to use time stretching of audio against video.

Every now and again there'll be a hard to otherwise source episode of something that turns up two poor vesions, one with good video but damaged | lower quality sound another with good sound | bad video .. and they each have differing frame rates and edit cuts.

To make a better version involves a bit of time stretching on the audio between marks.

I still have an eye out for the best OS tool for merging and aligning video + audio + subtitles tracks .. the smoothly integrated intersection of MKVToolNix + SubtitleEdit + Audacity.

[actionfromafar]

Video copied from analog sources also often suffers from video and audio out of sync. (Due to a bunch of factors such as dropped frames etc.)

[qingcharles]

Sounds like you are doing God's work. Keep it up.