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Jerky Playback Suddenly
I’ve had this problem before ,but don’t remember how to fix it… probably really simple for you FCP pros, but I have to ask for help again:
Timeline is playing back jerky, annoying. It happend suddenly, did I hit a key without knowing?
Tried restarting, rendering, closing all the open sequences, etc
Working with FCP HD 4.5 on a G4 Powerbook. 1.67 Ghz… Media is on external LaCie 250GB
Pauline. -
4 Replies
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A couple of quick checks before you get too deep…First check to see if your scratch disk accidently got changed to your system drive. Make sure that the canvas is scaled to the video. Click “fit to window” in the left pull down at the top of the canvas.
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There is a function in FCP that is often overlooked… and it can help with many audio and video “skipping”, “sticking” and “missing” problems.
You should “Mixdown” the Audio for playback before you dub out of FCP, or during the edit, if you have audio/video stuttering, drop-outs, sync-slippage, or freezes.
NOTE: Mixdown has even been demonstrated to help with slipping, skipping problems (or “missing” audio clips) for files being EXPORTED as QT (or similar) files out of FCP.
First, SELECT ALL of your audio tracks (highlight them) on the timeline, then:
Sequence Menu > Render Only > Mixdown.
You should see a dialog box telling you its rendering.
It might seem to make little sense that “Mixing down” even simple audio tracks will “fix” complex video “freezes” or random audio dropouts to tape or export, but it CAN.
NOTE: It does not matter of you only have one audio track, if there are random freezes during output, you should try the Mixdown.
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Also, it may help to remove/delete all render files and re-render.
Tim
Tim
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Thanks, yes, the “fit to window” (hm hm) was the problem, but mixing down is a very good idea too, since I am doing a lot of exporting…
Can you undo a Mixdown? Should I keep all the tracks and just play back the mixdown track?
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