[FFmpeg-devel] [PATCH 08/25] fftools/ffplay: support only limited color range

Paul B Mahol onemda at gmail.com
Sat Dec 16 19:36:25 EET 2017

On 12/16/17, Nicolas George <george at nsup.org> wrote:
> Marton Balint (2017-12-16):
>> I am afraid this wont work, because ffplay supports full range RGB as
>> well.
>> Unless there is a way to specify allowed pixel format / color range
>> combinations (which is the only way to mimic existing behaviour as far as
>> I
>> see), you have to use hacks like configure the filter graph once without a
>> range restriction, and if you get an invalid pixel format / color range
>> combination, you have to configure the graph again with the supported
>> color
>> range list for that pixel format, hoping that the pixel format will remain
>> the same.
> It seems you are confirming something that I suspected and needed to
> check, i.e. that negotiating range separately from pixel format (or at
> least RGB / YUV) will not give satisfactory results. I fear a combined
> negotiation will be necessary.

Not really. This is just ffplay nuisance.

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