[FFmpeg-devel] dcp encoding + new pixel format request/sponsorship

Paul B Mahol onemda at gmail.com
Mon Jan 21 22:12:02 CET 2013

On 1/21/13, Michael Cinquin <mc at michaelcinquin.com> wrote:
> Hi
> I just sent my first pull request from my first commits on GitHub :
> michaelcinquin.com:master.
> The pull request is about adding an rgb2xyz av_filter, which enables the
> processing of colors for digital cinema, from sRGB colorspace to XYZ, based
> on a 3x3 color matrix. This will hopefully make FFmpeg more useful for DCP
> encoding.

It would be best if this is in libswscale instead ....
You are using tabs which is not allowed, please find some time to read:


> There is one last show-stopper for making FFmpeg the main tool of opensource
> DCP encoding.
> FFmpeg does not support saving to RGB 3x12 bpp formats : this means we
> cannot output the 12-bit files necessary for Digital Cinema. Without a new
> pixel format, one has to save TIFFs out of ffmpeg, then encode them to j2K
> with another tool, which as far as I know cannot be piped.
> Could I get help or sponsor the development of a new pixel format that will
> enable libopenjpeg to save 12 bips per channel J2K ?
> best regards
> Michael Cinquin
> www.michaelcinquin.com
> PS : this is my first contribution to opensource software, and my first post
> on a developper mailing list. Please don't be too harsh if I'm doing
> something wrong
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