2013-01-21 18:15:02 UTC
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.
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 ?
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