[Etienne Mire]

Hi,
since this post is not too old, I thought I’d share my experience.
Nathan, I have the exact same problem as you.
Encoding back to 1920x1080i with VP9a (at 25fps because I’m in France, but I don’t think it makes any difference for that problem) will always result in an unsynced video that stutters.
Note that the first 2mins or so are always perfect, and then problems appears suddently (no matter where I put the loop region, or the clip I choose).

There is only one point I would like to add: rendering the movie without sound. I just unchecked the ‘include audio’ in the rendering options and when I do that, the movie plays fine in its whole length.
…but of course without sound.
I’ve tried and tried many different sound options 5.1 or stereo with different rates/frequencies, but nothing helped. and I’m getting dry of tests by now.
SV doesn’t crash during rendering although at one time, the rendering time kept counting without anything happening and I had to kill the app (probably because my project properties and output options were different: like going from 5.1 to stereo).
The only audio format I have available on the audio rendering tab is DolbyDigital AC3 studio, so my tests are kind of limited using only this format (btw, are there any viable other formats i could render in?)
I’m afraid I’m quite stuck here, but maybe this new point will help make everything move forward, at least I hope so.

Thanks for any help/comments/ideas/tests that could be made. And long live this forum that has helped me A LOT before already!

Etienne