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Jerky playback even on RAID 0
Hopefully someone has a solution to this irritation!
I am running Premiere Pro CS5 on a Dual Xeon 2.4Ghz, Windows 7 64bit with 24 GB of RAM and an Nvidia Quadro 40000. It is a new system with barely anything but CS5 installed.
I render out PSD image sequences from After Effects and when I play them back on Premiere’s timeline, 720p sequences can just about play smoothly however 1080p sequences stutter consistently.
To resolve this issue I have bought an extra 2 WD Velociraptor 10000rpm drives and now have 3 of these drives striped as a single volume in a Raid 0 configuration. I’ve tested the Max Read of this new volume and I can get 326 MB/s out of it so no problems there.
CS5 is installed on my system C drive. The footage and Adobe cache files are stored on the RAID 0 volume and the Premiere project is saved on an external eSata drive. I have Mercury Playback GPU Acceleration selected in Premiere, I have the latest Quadro 4000 driver installed, I dragged the imported footage onto the New Item icon in Premiere so it matches the sequence settings. Reducing the playback resolution with Premiere makes no difference whatsoever.
It is so frustrating that the jerky playback is still happening. It is happening with footage shot on a Red also. The only possibilities I can possibly think of now are that there is some magic unit size I should use when creating the RAID volume, or whether AVG is somehow interfering, or if there is some feature on Windows 7 that I am not aware of that is doing things with the drives.
Does anyone have any thoughts on how to resolve this?
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8 Replies
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Turn off virus software! Let us know.
Jon Barrie
aJBprods
Jon’s YouTube Tutorial Page
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Disabling AVG made no difference at all. I have discovered that a TIFF sequence (with larger files seizes than a PSD sequence) results in slightly smoother playback so I guess it’s not a hard drive speed issue.
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What if you lower your playback resolution?
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Lowering the resolution in Premiere makes no difference whatsoever unfortunately, even down to a 1/4 res, the lowest available option for the 1080p sequence.
It is a brand new raid volume. The only files on there are the image sequences. The raid volume is made up of 3 drives that had existing material on before, and I did a quick format of them when I made the RAID in Windows 7. So there are no cache files apart from the ones created on this single premiere project.
This new system has worked like a dream since I got it and I only invested further into a RAID to sort out the choppy image sequence playback, which is the only flaw, which is doubly irritating that it still unable to do it, even when I can get more than 300MB read rate from the raid.
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I am not a hardware/RAID expert, but it sounds like you are using a software (Win7) RAID 0 ? If so, I would wonder if that is the issue– the system is juggling Premiere and software RAID at the same time. Perhaps something to investigate…
-Jeff
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Why not render out your video to a video codec, rather than an image sequence of stills? Or render the segment of timeline, then it should play fine.
Jeff Pulera
Safe Harbor Computers -
I think Jeff P. notice what I did not: Photoshop sequences. Have you tried setting preview mode to something more video-oriented, like Yuv-AVI?
-Jeff (B)
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You could try moving your project file off the external sata drive onto an internal drive…my computer is much slower than yours and my playback is smooth at 1080 with mercury playback. Unfortunately you’ll have to re-link the files within the project if you do.
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