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Uncompressed 8bit / playback problems

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Rafael Metz
Uncompressed 8bit / playback problems
on Sep 11, 2011 at 5:35:53 pm

Hey there,

I just tried to playback a sequence with uncompressed 8bit clips. The sequence is a blackmagic sequence.
It´s not playing back correctly (dropped frames etc.)

I´m using a MacPro Quad with an eSata Sonnet Raid and a Quadro 4000.

Can anyone tell me how to solve that or what the best uncompressed format for PPro is?

Greetings
Rafael


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Jon Barrie
Re: Uncompressed 8bit / playback problems
on Sep 12, 2011 at 12:48:35 pm

The Quadro Card will only help playback when effects are used on clips not help playback a clip without clips, all that is done with the CPU and HDD speeds. Id be looking there. Uncompressed requires some very quick CPU and HDD read write speeds.

Post your Computer Specs please.

- JB

Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon's YouTube Tutorial Page
follow Jon with twitter


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ninetto makavejev
Re: Uncompressed 8bit / playback problems
on Sep 12, 2011 at 1:20:13 pm

Blackmagic has a "drive-speed" app that tells you what your drive-speed and bandwidth can handle. Are you talking SD or HD, that makes a huge difference... but in the end this is a system problem not necessarily PremPro.


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Vince Becquiot
Re: Uncompressed 8bit / playback problems
on Sep 12, 2011 at 8:14:22 pm

Hi Rafael,

There are still a few bugs for the BM hardware in CS5.

If your RAID and CPU are doing fine, try closing the program monitor panel in Premiere, that solved some of my issues, we still get dropped audio however(BM Studio 2). And of course, double check your sequence settings.

Vince Becquiot

Kaptis Studios
San Francisco - Bay Area


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Rafael Metz
Re: Uncompressed 8bit / playback problems
on Sep 13, 2011 at 7:49:01 am

Hi Vince,

thank you for that hint on BM.
From another side I´ve now heard that BM slows (even enables...) the Cuda power from the NVidia card and that the Matrox is the only one to get good performance results.

In general:

there are a lot of compressed codecs supported within PPro (weird stuff like AVCHD, etc.) - but I´m looking for some good uncompressed workflow. Is there any suggestion?

Greetings
Rafael


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Rafael Metz
Re: Uncompressed 8bit / playback problems
on Sep 13, 2011 at 7:44:50 am

The Sonnet Rad (R400Q) delivers about 200MBit/s r/w - enough for 8bit uncompressed material. And of course HD material.


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