On 12/10/17, Nicolas George <geo...@nsup.org> wrote:
> Paul B Mahol (2017-12-10):
>> > Looking at the format convertion it seems that an additional scaler
>> > is used to convert to gbrp which is then converted again
>> Here output looks more correct IMHO.
>
> What about the performances? Two expensive conversions instead of one
> (zero?) will cause a loss.

Correct output is more important than speed.
The filter supports only packed rgb output.

And in this case correct output is more important than speed.

I could set for filtering to pick encoder final format as first format
in input filtergraph, but I'm sure you guys will come with another
pathetic "broken" example in that case.
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