FCPX renders green frames

What are you complaining about? You only have a few green frames, all my footage is purple and gamma is way off 😀

There's a Apple support document that might be relevant:

Final Cut Pro X: Systems with two graphics cards may export QuickTime movies with green artifacts

Symptoms

You may notice green artifacts when you export a QuickTime movie. This can occur on a system that has two graphics cards installed and a display attached to a DVI port on each card.

Resolution

To work around this issue, only use Final Cut Pro X with a single graphics card installed on your system.

Not a bug. It's a "feature". The engineers at Apple have decided that really good and progressive editing requires a few green frames here and there for aesthetic purposes, so they built in the Random Green Frame Generator to help us editors out, and we don't even have to do anything, FCP X will simply handle it for us in the background - just another groundbreaking feature from your friends at Apple!

Same here. It's like certain color channels aren't being shown. Does anything green (grass, leaves) show up in color on yours?

Well they've been criticised in the past and have embraced green technology and this is their way of embedding it in your projects, subtly, like a star wipe, so your clients will know it was Made on a Mac. Pro feature, like those DVD themes.

Same here. I'm in a maxed out MacBook Air (latest gen), fcpx runs fine, but renders black and green frames. I import footage from a Canon 5D MkII, the artifacts appear in both the pro res render and the proxy render. Usually its 2 black frames immediately followed by 4 green frames. Happens in 1 of 5-7 imported .mov files.

If I delete the pro res and proxy in the finder and re-render, it's usually fine. Yet very annoying.

Okay, to be sure: I'm talking about the "transcoded" files, the resulting files of having fcpx transcode my h.246 files to pro res and proxy.

I think I have the solution for you. I manage to export movies when I have the graphics setting to "Better battery life" in system preferences -> Energy saver. Otherwise I get green artifacts. Logic? Not at all. This is something I hope Apple's FCP team will fix.

Try using MPEG Streamclip and transcode the footage to Apple Proress 422.

Found a quick work around for this. Was happening to me on a regular basis when stacking effects/titles. Apparently the issue is caused by random render errors on your proxy media. Simply click on stabilazation and let FC re-render. If its a lock-down shot I just leave it, otherwise click it back off after. This work-around has been excellent 100% of the time for me.

Just wanted to say Thanks Jeff for this. In 10.0.6 this continues to be an issue (Black frames for me though), and I had stablize already on. I just adjusted the amount down a bit, re-rendered and it worked. Re-rendering changing other non-stablize settings did NOT fix it, wasn't until I adjusted stablize settings did it fix the problem.

THank you

Hm actually no, it's stopped working. No matter what change I do, i'm getting flickering black throughout my renders. I keep changing the stablize amount and re-rendering all to no effect.

Any ideas on what I can do to stop this happening?

4 minute project - and it's taken me days to get the render finished as it's so slow with Magic Bullet Looks in 10.0.6 (and Beauty Box with GPU turned off). So very difficult to consider deleting render files and starting again. I need a way to fix my 20 or so clips that still have black flickers.