Cineform HDV and 32 bit question at DVinfo.net

Stephen Sobel · February 5th, 2008, 07:16 PM

I downloaded a trial version of Cineform HDV and used it to capture clips from my Canon XH-A1 - using the setting to automatically convert the clips to Cineform intermediate. I used the match media settings option to set the project settings. I then rendered a video twice - once using 32-bit and then 8-bit. The 32-bit version looks a bit more washed out or less vibrant than the 8-bit version. Is this how it's supposed to work?

Glenn Chan · February 5th, 2008, 07:22 PM

It's probably because of the levels conversions going on:

http://glennchan.info/articles/vegas...or/v8color.htm

You kind of have to refer to the table in that article.

Stephen Sobel · February 6th, 2008, 07:10 PM

I guess I still don't understand. If I use 2.222, will that give me more vibrant colors than 1.000?

As I read your article, Cineform decodes to Studio RGB. Is this why the 32 bit looks a bit washed out compared to 8 bit? If so, do I need to convert to computer RGB - and if so, how is that done?

Glenn Chan · February 7th, 2008, 01:29 AM

See my response in the Sony forum.

(And please, if you can, don't cross-post on forums. It makes conversations hard to follow.)

February 5th, 2008, 07:16 PM	#1
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	Cineform HDV and 32 bit question I downloaded a trial version of Cineform HDV and used it to capture clips from my Canon XH-A1 - using the setting to automatically convert the clips to Cineform intermediate. I used the match media settings option to set the project settings. I then rendered a video twice - once using 32-bit and then 8-bit. The 32-bit version looks a bit more washed out or less vibrant than the 8-bit version. Is this how it's supposed to work?

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February 5th, 2008, 07:22 PM	#2
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	It's probably because of the levels conversions going on: http://glennchan.info/articles/vegas...or/v8color.htm You kind of have to refer to the table in that article.

February 6th, 2008, 07:10 PM	#3
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	I guess I still don't understand. If I use 2.222, will that give me more vibrant colors than 1.000? As I read your article, Cineform decodes to Studio RGB. Is this why the 32 bit looks a bit washed out compared to 8 bit? If so, do I need to convert to computer RGB - and if so, how is that done?

February 7th, 2008, 01:29 AM	#4
Glenn Chan Inner Circle Join Date: Jun 2003 Location: Toronto, Canada Posts: 4,750	See my response in the Sony forum. (And please, if you can, don't cross-post on forums. It makes conversations hard to follow.)