[FFmpeg-devel] OpenEXR

Michael Niedermayer michaelni at gmx.at
Wed Aug 15 16:49:36 CEST 2012

On Wed, Aug 15, 2012 at 12:55:57PM +0200, FFmpeg wrote:
> Hello!
> My first post to the list :)
> I recently started learning C and know a bit of
> python, so this is a nice practice for me.
> Hopefully not too much over my head ;)
> I'd like to add a very simple option to ffmpeg to
> be able to at least write the most basic EXRs.
> Currently I'm going through the info on the
> website and the EXR reader made by Jimmy
> Christensen.
> I'll be lurking the list for a while...
> One question already rose, after looking at
> the docs. OpenEXR assumes that colour
> values are stored as linear light as opposed to
> most video codecs using a gamma value
> embedded in the colour values.

> Is there any 'awareness" of ffmpeg internally
> of colourspaces and gamma values?

see AVColor*
Theres no support to convert it automcatically yet though


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Into a blind darkness they enter who follow after the Ignorance,
they as if into a greater darkness enter who devote themselves
to the Knowledge alone. -- Isha Upanishad
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