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Re: [Cellar] FFV1 Version 4

"Peter B." <pb@das-werkstatt.com> Thu, 07 January 2016 18:00 UTC

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Subject: Re: [Cellar] FFV1 Version 4
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On 01/06/2016 11:11 AM, Kieran O Leary wrote:
> I'd like to propose the inclusion of Logarithmic information within the
> FFV1 codec when transcoding from LOG RGB DPX

I just wanted to mention that as well.
Thanks Kieran :)

I was already asked several times (mainly by film archives) if that is
possible.
Currently, "logarithmic-DPX-to-FFV1-and-back" is reported to be doable,
but requires to manually set the output DPX to be non-linear...

I'm not too experienced with non-linear color encoding, but in a recent
presentation by Reto Kromer, he mentioned that "logarithmic" often just
means "logarithmic-ish".

Therefore it might be good (or necessary) to also store and handle
information about what type of non-linear color values are used?


Kind regards,
Pb

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