[FFmpeg-devel] [PATCH]Add a 4444 profile to a prores encoder

[Robert Krüger]

On Wed, Sep 12, 2012 at 11:43 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Derek Buitenhuis <derek.buitenhuis <at> gmail.com> writes:
>
>> On 12/09/2012 7:42 AM, Carl Eugen Hoyos wrote:
>> > When encoding prores wth -pix_fmt yuv444p, QuickTime shows "ProRes 422".
>> > (I don't know if this actually affects QuickTime decoding.)
>>
>> I'm pretty sure this is just a naming thing. 4:4:4 is likely being used,
>
> I thought so as well..
>
>> but maybe I can confirm later.
>
> ... but didn't really know how to test.

creating a frame with thin colored lines, that make the chroma
subsampling obvious would certainly reveal if it's correctly decoded
as 444. If you want I could do that.