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Adobe Premiere CC dropping frames on new Mac Pro

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Chris Ransdell
Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 5:42:30 am

I have recently moved from PC to Mac, and acquired a "loaded" brand new Mac Pro. However, I often have playback "jitters" (aka drop frames) on things as simple as an MOV I rendered out of After Effects. My Mercury PU playback is on. I am using dual screen with my 2nd screen as a playback monitor. I've seen demos of this same machine in Premiere CC flawlessly playback 4K with treatments.

Why can't I play a simple MOV in my sequence without dropping frames?

Oh, the MOV plays fine if I open it in finder.


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Dennis Radeke
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 6:33:26 am

The Amazing Kreskin

With tongue firmly in cheek ;-), let me suggest that we need a bit more to go on than a "fully loaded Mac". OS, RAM, HD layout, version of Premiere Pro, bit depth and data rate of QT file, etc would all be helpful. Then we can hopefully give you a hand on where the problem lies.


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Chris Ransdell
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 2:22:24 pm

3.7GHz Quad-Core Intel Xeon E5 processor
16GB 1866MHz DDR3 ECC memory
Dual AMD FirePro D300
with 2GB GDDR5 VRAM each
512GB PCIe-based flash storage1

Dual 27" monitor


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Dennis Radeke
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 2:29:57 pm

and a bit about the files? QT with what inside of them? What is your storage subsystem for media?

Thanks,
Dennis


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Chris Ransdell
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 5:01:42 pm

I rendered the MOV out of AE a lossless settings. It is rendered to a thunderbolt Gdrive. The music track plays from the onboard SSD.

In short, I'm confused why my brand new, state of the art equipment is lagging on something so simple. I'm also a minimalist with what I put on my computer as well, so very little 3rd party or superfluous software or files.


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Tero Ahlfors
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 6:32:22 pm

[Chris Ransdell] "It is rendered to a thunderbolt Gdrive."

Have you tested read/write speeds of this drive? Uncompressed stuff will eat up bandwidth really fast, especially if you make multiple tracks going on.


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Chris Ransdell
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 17, 2014 at 9:58:31 pm

This literally was a single 1080p uncompressed MOV. Much less data then 4K, can stream off a Gdrive flawlessly. Besides, the file plays just find when not in Premiere.


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Dennis Radeke
Re: Adobe Premiere CC dropping frames on new Mac Pro
on Dec 18, 2014 at 3:23:00 pm

Chris,

I still need OS version (10.9.5 is recommended), version of Premiere Pro (8.2 just came out) and the bit depth of the uncompressed video file (if not 8-bit).

Couple of general housekeeping things you can try:
1 - trash your preferences
2 - clean your media cache
3 - disable automatic peak file generation
4 - Make sure your Memory settings are either the default (I think 11GB of RAM for 16) or less (you could put it to 8GB if you're having difficulty)
5 - uncheck 'maintain audio pitch while shuttling' in case you're doing a lot of that as part of your testing

Dennis


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