[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:
> I just sent my first pull request from my first commits on GitHub :
> 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
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
> 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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> ffmpeg-devel at ffmpeg.org
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