[FFmpeg-devel] [PATCH 3/4] avformat/movenc: force colr atom for uncompressed yuv in mov

[Kevin Wheatley]

The guess work comes from this list:

https://developer.apple.com/library/content/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG10-SAMPLE__COLR__SETTINGS

and I agree is the source of a lot of chaos, but it is what several
tools have done in the absence of any specified values.

My usage of the feature is to write the atom when I need to by
explicitly enabling it on the command line and I also explicitly set
the metadata either from the input file, or by overriding on the
command line.

Kevin


On Mon, Nov 20, 2017 at 4:52 PM, Derek Buitenhuis
<derek.buitenhuis at gmail.com> wrote:
> On 11/20/2017 4:45 PM, Dave Rice wrote:
>> What do you propose as the default for guessed_hacky_crap? Also are there supporters for the need of a guessed_hacky_crap optio? Is there precedence in ffmpeg to enable/disable guesswork via a user option?
>
> I personally would never use the guesswork stuff, since I think it is a
> terrible idea, so can't really propose a default or support it.
>
> The guesswork stuff was added at the same time as colr support, by Michael,
> in 7b6f4191763a5ffde02fa198101aabc3ddb5bf61, so maybe he has some opinion.
>
> - Derek
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