Apple ProRes 422 Format at DVinfo.net

Robert Ducon · April 16th, 2007, 01:54 PM

Whoa? "Uncompressed HD quality at SD file sizes - 10-bit, 4:2:2, full raster, VBR" Sounds too good to be true! Too vague - it could mean SD at which compression strength - 50mbs?

What do we know about this? I read somewhere that someone said this is the end of Cineform - I highly doubt that. Cineform has really proven itself.

What's compressing this format (is it based off MPEG 4 in some GOP scheme?)

Steven White · April 16th, 2007, 02:17 PM

To find out Cineform's take, I started this thread too several hours ago:
http://www.dvinfo.net/conf/showthread.php?t=91641

-Steve

Wes Vasher · April 16th, 2007, 02:39 PM

There's two settings for ProRes, standard and HQ and Apple states their bitrate to be 145 Mbps (18.1 MB/sec) and 220 Mbps (27.5 MB/sec) at either 8 or 10 bit and SD or HD resolutions. It's also square pixel which is really nice. Apple demoed 10 generations of ProRes split screened with uncompressed and it was supposed to look pretty good, we'll have to wait and see though.

Robert Ducon · April 16th, 2007, 03:48 PM

220Mbps - sounds good. Yes, I am glad it's square pixels as well.

Is this (the HQ) full 1920x1080 (being square pixels)?

Wes Vasher · April 16th, 2007, 04:09 PM

I would assume square pixels is available to any ProRes setting. Here's a screenshot from the ProRes movie on Apple.com that shows what looks like their standard presets. It's QuickTime so you should be able to customize presets I would assume.

Engadget also has a picture of ProRes being played, not much help but hey it's cool!
Engadget picture

Robert Ducon · April 16th, 2007, 04:51 PM

Looks alot like the Blackmagic codecs in terms of preset choices. Guess we'll find out once it's out what the actual compression/quality will be like. Could be good though! I agree - Mac users all to often just follow, so, thank goodnes for DV info users to chime in and inform ;)

Guy Cochran · April 18th, 2007, 10:26 AM

Apple has released a White Paper on ProRes 422 http://images.apple.com/finalcutstud..._ProRes_WP.pdf

April 16th, 2007, 01:54 PM	#1
Robert Ducon Major Player Join Date: Nov 2006 Location: Victoria BC Posts: 400	Apple ProRes 422 Format Whoa? "Uncompressed HD quality at SD file sizes - 10-bit, 4:2:2, full raster, VBR" Sounds too good to be true! Too vague - it could mean SD at which compression strength - 50mbs? What do we know about this? I read somewhere that someone said this is the end of Cineform - I highly doubt that. Cineform has really proven itself. What's compressing this format (is it based off MPEG 4 in some GOP scheme?) __________________ Mac + Canon HV20

April 16th, 2007, 02:39 PM	#3
Wes Vasher Major Player Join Date: Jan 2006 Posts: 440	There's two settings for ProRes, standard and HQ and Apple states their bitrate to be 145 Mbps (18.1 MB/sec) and 220 Mbps (27.5 MB/sec) at either 8 or 10 bit and SD or HD resolutions. It's also square pixel which is really nice. Apple demoed 10 generations of ProRes split screened with uncompressed and it was supposed to look pretty good, we'll have to wait and see though. __________________ Clips \| Stills

April 16th, 2007, 03:48 PM	#4
Robert Ducon Major Player Join Date: Nov 2006 Location: Victoria BC Posts: 400	220Mbps - sounds good. Yes, I am glad it's square pixels as well. Is this (the HQ) full 1920x1080 (being square pixels)? __________________ Mac + Canon HV20

April 16th, 2007, 04:09 PM	#5
Wes Vasher Major Player Join Date: Jan 2006 Posts: 440	I would assume square pixels is available to any ProRes setting. Here's a screenshot from the ProRes movie on Apple.com that shows what looks like their standard presets. It's QuickTime so you should be able to customize presets I would assume. Engadget also has a picture of ProRes being played, not much help but hey it's cool! Engadget picture __________________ Clips \| Stills

April 16th, 2007, 04:51 PM	#6
Robert Ducon Major Player Join Date: Nov 2006 Location: Victoria BC Posts: 400	Looks alot like the Blackmagic codecs in terms of preset choices. Guess we'll find out once it's out what the actual compression/quality will be like. Could be good though! I agree - Mac users all to often just follow, so, thank goodnes for DV info users to chime in and inform ;) __________________ Mac + Canon HV20

April 16th, 2007, 02:17 PM	#2
Steven White Major Player Join Date: Nov 2004 Location: Canada Posts: 547	To find out Cineform's take, I started this thread too several hours ago: http://www.dvinfo.net/conf/showthread.php?t=91641 -Steve

April 18th, 2007, 10:26 AM	#7
Guy Cochran DVCreators.Net Join Date: Oct 2001 Location: Seattle, WA Posts: 892	Apple has released a White Paper on ProRes 422 http://images.apple.com/finalcutstud..._ProRes_WP.pdf __________________ Guy Cochran DVinfo Sponsor, Cool Gear - DVeStore!