Re: Rendering shifts video, creating loss of sync.

It's true, it does seem like something easy is missing, which is why I wasn't worried about it at first. Now I'm not so sure.

When I render one clip on its own, it goes out of sync alone, the rest of the un-rendered clips are fine.

I'm working in DVCPro HD, and I did try resetting my Easy Setup, which didn't change anything.

Leaving the sequence un-rendered and exporting a QT doesn't help, because the force-render FCP applies before the export makes the clips go out of sync in the resulting QT file.

The abnormality in all of this is that it's only the clips that have a filter applied to them (any filter, doesn't matter which one) or an opacity shift that go out of sync when rendered. It's not like the whole timeline is out of sync, or the sync drifts. It's not even related to the audio at all, actually, that's just how I first noticed it. Even with no audio present, if I pull the opacity on a video-only clip down to 60% and render it, it shifts. It's puzzling.

I figure if I can't get to the bottom of this before I need to show my client the video, I'll have to figure out how many frames each clip shifts, and knock each of them out of sync manually before rendering so they line up once they're rendered... but I hate band-aids and prefer to find the source of the problem, (as I'm sure you do as well).

Thanks again for your input, it helps having another brain checking in on everything.