Re: [LAU] composing for video

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To: Florian Faber <faber@...>
Cc: <linux-audio-user@...>
Date: Wednesday, December 2, 2009 - 1:02 am

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You would be suprised. RGBA32 is used quite commonly in the compositor
world, usually stored as a sequence of images, with even higher precisions
available. Raw RGB24 is reasonably common with the video professionals I
know, when I questioned them about it they said that they could acheive more
film like colour grading than they could in any of the YUV colour spaces.

It's probably not the best format for realtime work given the amount of data
that needs to be transmitted (or maybe it is), I have previously worked with
piping raw YUV (yuv4linux) between applications and having something like
jack to manage the connections would be a godsend.

> Why RGBA32 RAW? Who in the professional video world would use such a

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You would be suprised. RGBA32 is used quite commonly in the compositor worl=
d, usually stored as a sequence of images, with even higher precisions avai=
lable. Raw RGB24 is reasonably common with the video professionals I know, =
when I questioned them about it they said that they could acheive more film=
like colour grading than they could in any of the YUV colour spaces.
It's probably not the best format for realtime work given the amoun=
t of data that needs to be transmitted (or maybe it is), I have previously =
worked with piping raw YUV (yuv4linux) between applications and having some=
thing like jack to manage the connections would be a godsend.

Why RGBA32 RAW? Who in the professional video world would use such a =
format?

Flo
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Messages in current thread:
[LAU] composing for video, Atte André Jensen, (Mon Nov 30, 9:11 pm)
Re: [LAU] composing for video, Emanuel Rumpf, (Tue Dec 1, 5:18 pm)
Re: [LAU] composing for video, Dave Phillips, (Tue Dec 1, 1:54 pm)
Re: [LAU] composing for video, Ray Rashif, (Mon Nov 30, 10:31 pm)
Re: [LAU] composing for video, Paul Davis, (Mon Nov 30, 9:39 pm)
Re: [LAU] composing for video, Atte André Jensen, (Tue Dec 1, 9:02 pm)
Re: [LAU] composing for video, Josh Lawrence, (Tue Dec 1, 6:50 pm)
Re: [LAU] composing for video, Lorenzo, (Tue Dec 1, 6:44 pm)
Re: [LAU] composing for video, Patrick Shirkey, (Tue Dec 1, 1:56 am)
Re: [LAU] composing for video, Atte André Jensen, (Mon Nov 30, 11:15 pm)
Re: [LAU] composing for video, Paul Davis, (Tue Dec 1, 3:57 pm)
Re: [LAU] composing for video, Hartmut Noack, (Thu Dec 3, 12:57 pm)
Re: [LAU] composing for video, Esben Stien, (Thu Dec 3, 5:26 pm)
Re: [LAU] composing for video, Eric Dantan Rzewnicki, (Thu Dec 3, 6:34 pm)
Re: [LAU] composing for video, Esben Stien, (Thu Dec 3, 7:39 pm)
Re: [LAU] composing for video, Esben Stien, (Tue Dec 1, 10:23 pm)
Re: [LAU] composing for video, Florian Faber, (Tue Dec 1, 10:31 pm)
Re: [LAU] composing for video, Danni Coy, (Wed Dec 2, 1:02 am)
Re: [LAU] composing for video, Paul Davis, (Wed Dec 2, 1:33 am)
Re: [LAU] composing for video, Danni Coy, (Wed Dec 2, 4:46 am)
Re: [LAU] composing for video, Patrick Shirkey, (Wed Dec 2, 2:27 am)
Re: [LAU] composing for video, Esben Stien, (Tue Dec 1, 10:56 pm)
Re: [LAU] composing for video, Florian Faber, (Tue Dec 1, 11:41 pm)
Re: [LAU] composing for video, Esben Stien, (Tue Dec 1, 11:55 pm)