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Dropping frames after Motion stabilization
Hello,
I’m having a weird problem with Motion and FCP. I’m running FCP Studio 2 (FCP 6) on a MacPro Intel Dual-Quad Core with 2GB of RAM and a Kona 3 card. My media is on 2 internal hard drives – SATA 7200, 500GB each, speed=3gigabits.
I’m working in Apple Prores 422 HQ. When I open my project and play my sequence it plays back fine. I send a clip to Motion (with embed motion content and launch motion checked) and apply motion stabilization; save then quit. I go back over to FCP and I can’t play my timeline for more than a couple of seconds before I get dropped frames. It’s not just when I play the new Motion clip in the timeline – it’s everywhere and it’s random. This happens before and after I render. If I remove the motion clip I still get dropped frames. If I shut down FCP without saving and reopen the project (no Motion work having been preserved) it plays back fine. I’ve tried trashing prefs to no avail. Any advice? I like the elegance of this workflow…if it works! I’m wondering if this is a bug that updating to FCP 6.0.1 will fix.Thanks in advance for any thoughts…
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1 Reply
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It’s probably the speed of your media drive(s) and not any fault of your Mac Pro’s processing power. If you’re working in ProRes HQ you need to RAID your 2 internal media drives together. I don’t know the transfer rate requirements of ProRes HQ but I do know that using only one SATA drive is not reliable enough for smooth playback with or without a filter like smoothcam applied.
I converted an SD clip to ProRes HQ a while back and tried to play back the exported self-contained QT movie from my internal SATA startup drive and it stalled. After copying the file to my 3 internal media drives set up with RAID 0 it played back fine.
Hope this helps.
– Don
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