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System Requirements, Choppy Playback HD video, CS5
Hello,
I am having trouble editing HD footage on Premiere Pro CS5. The format that I am importing is 1280 x 720 60fps, coming from my canon T2i.
The left screen preview window playback of clips is not choppy and runs smooth. However the right screen window, the playback of the footage on the timeline, is choppy.
When I export, its fine, which is expected. When I render the work area, then the playback from the timeline is not choppy.
The playback is already set to 1/4 the quality in both playback windows.
System:
Intel Core 2 Duo T7250 2.00GHz
3.00 GB RAM
Winows 7 64bit Home Premium
NVIDIA GeForce 8600M GTFrom other people’s problems I’m guessing mine has to do with a need to upgrade RAM. I just wanted to confirm this is the case though before dropping money on it.
Thank you for any help,
Jack. -
8 Replies
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You’re right, RAM is the first thing to look at. But even before that, a couple of things:
– does your memory utilization get close to 100%? Check in Windows Task Manager or Resource Monitor.
– What are your memory allocation settings in Pr? (Preferences – General)
– What is the sequence preset you are using?Alex (DV411)
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Checked Windows Task Manager… highest memory utilization gets to around 50% on 1.5 GB.
Memory allocation settings are set to “Optimize rendering for Performance. RAM reserved for other applications 1.5 GB and reserved for Pr 1.5 GB.
Sequence preset is DSLR 720p60.
Thanks Alex.
-Jack
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Checked Windows Task Manager… highest memory utilization gets to around 50% on 1.5 GB.
Memory allocation settings are set to “Optimize rendering for Performance. RAM reserved for other applications 1.5 GB and reserved for Pr 1.5 GB.
Sequence preset is DSLR 720p60.
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Let’s double-check to make sure your settings are matching your footage. Drag a clip from your bin to the ‘New Item’ icon at the bottom of the bin. It will make a new sequence that matches your clip. Does that play smoothly?
TC -
Hey Todd, thanks for your help.
No, it does not play smoothly.
After further research I have pinpointed the problem to the Mercury Playback Engine. My CPU does not have a video card that supports use of the Merc Playback Engine. Am I right in saying that this is the major problem?
In the past week I have tried upgrading to 8gb ram… and it was still choppy. I am not interested in setting up raid 0 on my machine as I cannot afford it.
If I get the MPE to work will that allow me to edit my native dslr footage smoothly? Even if it is 1/4 resolution and lowest settings… I just want to be able to have smooth playback, which I know CS5 is supposed to be capable of doing.
Thanks for any replies!
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GPU acceleration (one of the features of MPE) should help with smoother playback – but may not be the culprit, as decoding is still done in the CPU (scaling can be done in GPU if available).
It’s unlikely it’s a disk throughput issue.
You mentioned your CPU load is at 50% – is it 100% on one of the cores, with close to 0% on the other? Then the CPU is maxed out during playback and it’s possible that getting a supported GPU won’t make it smoother.
One sure way to find out is to borrow someone’s supported GPU and try it.
Alex (DV411)
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hello,
Same specs for me (gx700 msi)Did you manage to make the playback smoother even without Mercury working?
Any help / advices are welcome!
T
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It seem like you are not the only one having this issue.
I am running:
Window 7 64bit Ultimate
i7 950 @ 3.07Ghz
6gb Ram
Powercolor 6870 1GbBut at the same time, I kept having “AIT display driver stopped working had recovered”
If I open a lot of browsers, light room and photoshop; kept changing tab (looking for information) on browser might cause it to hang and went into BSOD.
I am wondering the choppy video playback is caused by the video ram itself.
Senior Audio Video Engineer
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