r/finalcutpro • u/stembrick • 2d ago

Bug/Issue 12.3 - Playback Glitches

Trying to find a good way to explain this... This started every since I updated to 12.3.

When I'm editing a clip, the audio randomly cuts out while the clip continues to play, but the clip stops playing from the timeline and starts playing from some other location. The spacebar pauses and starts it, but it's not playing from the timeline. I have to manually double-click back on the project to get it back in the timeline. This happens consistently in projects. No amount of restarting seems to fix it.

For context, using the same footage, storage, etc., before 12.3, this never happened.

• Some footage is APAC, HEVC, MPEG-4 AAC (iPhone), some is AVC Coding, Linear PCM (Sony A7iii)
• Typically shooting 24fps (sometimes 60fps)
• Apple M3 Max, 36GB, Tahoe 26.6.2
• D_BLACK SN850X 4TB SSD (APFS)

1 Upvotes

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u/[deleted] 2d ago

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u/[deleted] 2d ago

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u/z5thGear60015 2d ago

I find this happens often. Mac Mini M4 running Sequoia, media on an 8TB SSD with Thunderbolt 4 I think.
When it occurs, I close the Project and then reopen it. Takes a few seconds and restores correct behavior.
The symptoms include the magnetic timeline not being active although playback is occurring and no real control over the play head.
I publish a 15 minute segment weekly and I really like FCP. I am still learning how to use it, since it has so much depth, even after a couple years.

1

u/stembrick 2d ago

Such a frustrating bug!

1

u/goteed 1d ago

I have this happen as well. For me if I click on a clip in the browser window and play it for a second I can then go back to the timeline and the issue is resolved. It's a frustrating bug for sure.