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Duoooh! Why did I do that???
I’ve been editing on FCP HD, using a G-Raid connected to a PowerBook G4 via 800 FW card. Everything has been rock solid for the past few months. Yesterday I let someone install Avid on my computer in order to experiment with transcoding some media he digitized. Big mistake. There was trouble installing the program, and when it finally installed it was painfully slow. We aborted the experiment and immediately I had endless probems with playback. Dropped frames kept interrupting playback from the same timeline I had been working on all week without issues.
Needless to say, I immediately de-installed Avid (including prefs, etc), which made no diff. Since then, here’s what I’ve done:
1. Trashed FCP prefs
2. Repaired permissions.
3. Tried different RAM usage settings for FCP franging from 90% – 100%
4. Reinstalled FCP
5. Turned off all backgroound programs that ping for the internet
6. Set ownership to external drive ti “ignore permissions.”
7. Saved as New Project.
8. Copied timelinesonto new sequences.
9. Closed all open sequences except one.This system was rock solid before the install of AVID, now I can hardly work for 30 seconds without dropped frames. I only have 512 RAM on the laptop, but that wasn’t an issue before the Avid install…
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4 Replies
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Didja do Panther [Tiger] Cache Cleaner? Try it out — goto Versiontracker.com and get the DL. If you are still on Panther, you may have to track down the previous version. I use Medium Cleaning for all three user, system, etc. choices. See what happens. No risk of messing anything up AFAIK.
Also, check the obvious things like Viewer/Canvas in Fit to Window, timeline playback settings set to Safe RT, and check to see if any weird motion parameters got accidentally changed. It happened once where I all my clips scaled down to 98% when it pasted it from a 720 x 486 seq to a DV 720 x 480 seq and I never even knew about it. Something like that. Do a select all for bideo clips then Control + click and select remove Attributes. See what comes up.
steve covello
double wide post -
Avid install some kernel extension in /System/Library/Extensions/ they where probably called Avid* some are (my remember) for managing drives.
Avid come with an uninstaller you SHOULD use it.you can try to reinstall/uninstall to go that working.
You couuld also trash Extensions.mkext and Extensions.kextcache in /System/Library just by doing these two line in the terminal:sudo rm -Rf /System/Library/Extensions.kextcache
sudo rm -Rf /System/Library/Extensions.mkextthere are cache file for OS X extensions.
You MUST reboot after that. -
Thank you! After a medium cleaning using Cache Cleaner, I’m back in business. Now with multiple sequences open, I’m getting smooth playback and only the very occaisional dropped frame message. Thank you very much for this suggestion, as it seemed to do the trick.
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OK, it didn’t work after all. Still getting dropped frames error quite regularly (every few minutes!!!) I’m only using one FW drive, a G-RAID 500 Gig which is only half filled. I did a throughput test and got write speeds of 44 mb/s and read speeds of 58 mb/s.
I’ve re-installed the Aja driver with the latest downloaded off their site, and upgraded the firmware.
Of course, all the other things I mentioned in previous post, plus the usual “fit to window” check for viewer/canvas, etc.
Is this really a throughput problem?
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