[FFmpeg-devel] RAW Bayer video codec - needed

Michael Niedermayer michaelni at gmx.at
Tue Dec 25 17:42:08 CET 2012


On Mon, Dec 24, 2012 at 08:31:38AM +0700, Paul Spurrier wrote:
> Hi.
> I am a filmmaker from England, who currently works in Thailand.
> You can look up some of my previous work at:
> http://www.youtube.com/playlist?list=PL1F7C3D295B468DEB&feature=view_all
> I've been working on the prototype for a new form of digital cinema camera
> - HD resolution - accepts professional lenses - and most importantly
> records the RAW sensor data.
> Anyone who uses a DSLR stills camera and then retouches in Photoshop will
> have discovered the advantages of using RAW files. It gives you more
> flexibility and latitude in the editing stage.
> The important thing about the camera is that while it gives a great quality
> result and is certainly good enough for professional use, it is made almost
> entirely of publicly available products. Apart from the case, there is only
> one tiny circuit board that I have had to build. It is essentially a
> mini-PC in a camera shaped case with a high-quality machine-vision camera
> on the front.
> It's not only a camera that I'm looking forward to use as my own creative
> tool, but hopefully also a prototype for other filmmakers to design and
> build their own cameras.
> However, there is one obstacle.
> I need to find a recording codec for it.
> There are a number of professional codecs that work with professional
> cameras such as REDcode, Phantom Cine, Cineform, ARRIRaw. But of course all
> of these are proprietary codecs.
> The only option at the moment is CinemaDNG, but this is a slightly strange
> codec that seems to be basically an extension to the stills DNG format, and
> records an image sequence. I'm not even sure how it handles audio.
> Clearly what is needed is a codec that can take in 8 to 16 bit RAW in the
> different Bayer array formats, and store, either uncompressed or losslessly
> compressed. (And of course allow playback)
> This seems an ideal task for ffmpeg.
> I believe that work has been done in ffmpeg on a RED-style codec, and I
> think there have been efforts to produce a Cineform-style codec. Phantom
> Cine is interesting because it has a white paper that gives great detail
> about its format.
> I have no desire to 'own' a codec, otherwise that makes it no more useful
> than the current proprietary formats.
> But I do need a codec.

> Has anyone either:
> got work in progress on a  RAW Bayer ffmpeg implementation that they might
> share with me,
> or
> got the time to adapt, complete, or start from scratch such a project.

Peter Ross is working on RAW Bayer support

> I could sponsor such a project.

maybe best to talk with peter ...


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Many that live deserve death. And some that die deserve life. Can you give
it to them? Then do not be too eager to deal out death in judgement. For
even the very wise cannot see all ends. -- Gandalf
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