timeline playback: random green glitches flashing for no apparent reason?

[MathewWelsh]

Here's another issue I cannot find in your open or closed issues board.

I've been working with 6K BRAW footage, using your BRAW Toolbox.

I'm not sure I ever solved the issue I posted about (10 days ago) when it comes to Decode Quality, and using the BRAW Toolbox's quasi "proxy-like" workflow. It doesn't seem like the footage is playing back in 1/4 quality, which is what I tried to set using the Global Settings.

So I know my machine has been chugging a bit on the footage playback. The new main issue is that randomly, a green flashing artifact will appear in the timeline, usually on a second layer that is laid overtop the main magnetic timeline interview layer. There's nothing wrong with the source clip, and yet, that flash will stay there. It can play back fine when I first lay the clip, but then when I come back to that section later, suddenly the clip with develop that green flash artefact. I can close FCP, and restart, but it's still there. Even after the timeline renders, that green flash is there.

By futzing around with it, I've discovered that I can use the slide (T) tool to slide the offending clip by 1 frame, and lo and behold, the green flash artefact is gone. For now. But then elsewhere on the timeline, another will appear. It's like whack-a-mole, usually about 2 or 3 are appearing at any given time as I work the timeline.

On my first export, I had gotten rid of all the green flashes on my timeline, but one of these green flashes appeared in my export. When I investigated that clip back in FCP in the timeline, the green flash was not there.

So this is an instability that is a bit maddening, and time-consuming. And given that my export for this 10 minute timeline takes 40 minutes to export, I'm not looking forward to final export/delivery when I have to add titles, tackle the colour grade, etc.

Any help you can offer here would be hugely appreciated.

thanks, Mathew

[latenitefilms]

Based on the above and what you've written in #198 - it sounds like maybe you're having hardware issues. Green flashing artefacts sounds like some kind of hardware issue with your GPU. The issues you mention in #198 sound like hard drive issues.

I'm not entirely sure these problems have anything to do with BRAW Toolbox specifically - it sounds like your Mac is playing up in general.

Maybe try running Apple Diagnostics and see if it reports any hardware issues?

https://support.apple.com/en-au/102550

[MathewWelsh]

Okay, thanks, I'll give that a try.