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Apple pro res vs. Apple pro res (HQ)
Whats the difference and how much of a difference is there. Is it worth using (HQ).
We digitize, edit and output in 8bit Uncompressed, I was thinking of changing to ProRes to save space, but don’t want to lose quality.
We have 3 G5 Power PC’s (quad core) and 2 Intel Octocore systems, all have 8GB of Ram. I read that you can only do ProRes on an intel system. Is that true?
Thanks.
Steve Cohen
Senior Editor
O2 Media Inc. -
11 Replies
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Right now everything is SD.
Either Beta SP, D9, or Mini DV.Steve Cohen
Senior Editor
O2 Media Inc. -
[Steve Cohen] “Right now everything is SD.
Either Beta SP, D9, or Mini DV.”Forgot to mention we are capturing via a BalckMagic MultiBridge Extreme or Pro.
Steve Cohen
Senior Editor
O2 Media Inc. -
Well, the link specifically says that you can’t capture HD without at least a G5 Quad. SD MIGHT work but your mileage may vary.
For SD, just go ProRes and not HQ.
Jeremy
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Thanks Jeremy;
We are using a G5 Quad connected to a Fiber San to do our capturing. I think I may test it out and see how things go,
Steve Cohen
Senior Editor
O2 Media Inc. -
Break a leg!
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We have not used Pro Res but have been editing in the IMX 50 codec for the past 4 years and can hardly tell the difference between it and uncompressed. You have to look hard to notice just a little bit more noise compared to Uncompressed 10bit. It’s an HQ Mpeg 2 format which will be easier on your processors than Pro Res which is a variant of H.264. It’s also an I-frame only which means frame to frame no P frames or B frames. Not sure Pro Res is the same, I could be wrong.
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Thanks I’ll capture a clip at a couple of different codecs and then compare them side by side and see.
Steve Cohen
Senior Editor
O2 Media Inc. -
[Devin Crane] “t’s an HQ Mpeg 2 format which will be easier on your processors than Pro Res which is a variant of H.264. It’s also an I-frame only which means frame to frame no P frames or B frames. Not sure Pro Res is the same, I could be wrong.”
Devin,
Apple’s ProRes codec is a 10bit, full raster (ie: full frame geometry) discrete cosine transform (DCT) based compression algorithm. ProRes is an I-Frame codec and was designed specifically to be the highest quality intermediate codec for the post-production workflows that handles the data at the highest 10bit quality.
gary adcock
Studio37
HD & Film Consultation
Post and Production WorkflowsCheck out
https://www.aja.com/kiprotour/Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php -
Your right, I thought I had read somewhere that it was a variant of H.264, but it’s not.
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