[x264-devel] I444 support

[Gregor Riepl]

hello list

i'm working on a system to archive old media digitally, and i want to  
do that with as little data loss as possible.

as h.264 offers very good compression ratios and can operate in a no- 
quantisation mode (qp=0), i want to use that, if possible.
but there is another bottleneck besides quantisation: the colorspace  
compression.
luckily, the h.264 specification describes support for 4:4:4 (no  
chroma subsampling) in the fidelity range extensions - unfortunately  
x264 does not (yet) support this.
in fact, i've been looking for a suitable codec that can do rgb24 or  
yuv4:4:4 for quite some time.

how hard would it be to add this missing feature? does the current  
implementation rely on a subsampled colorspace? and where should i  
start if i want to implement it myself?

thanks
gregor
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2482 bytes
Desc: not available
Url : http://mailman.videolan.org/pipermail/x264-devel/attachments/20071127/0870ab44/attachment.bin