[FFmpeg-user] zimg colorspace yuv -> rgb possible?

[Paul B Mahol]

On 1/26/16, Andy Furniss <adf.lists at gmail.com> wrote:
> Moritz Barsnick wrote:
>> On Tue, Jan 26, 2016 at 15:43:45 +0000, Andy Furniss wrote:
>>> Is it possible via ffmpeg with libzimg to convert yuv -> rgb or is
>>>  zscale just for scaling and the Colorspace bits not
>>> implemented/need some different filter?
>>
>> From looking at the code, it seems to be implemented. (I don't use
>> zimg.) I have no idea how libzimg handles interlaced...
>>
>> Have you tried? Or are you considering whether to integrate libzimg
>> into your build?
>
> Well I got as far as building with the lib doing
>
> ffmpeg -h full | grep zscale -A 100 plus looking at the web help but
> though I can see plenty of options for colorspace "stuff" I couldn't
> really see anything that specified I wanted yuv -> rgb or how to specify
> interlaced.
>
> The github readme does specifically mention yuv -> rgb and the
> doc/ecamples folder mentiones interlaced.
>
> I did a quick ffmpeg -loglevel debug -i yuv -vf zscale out.png in case
> ffmpeg would automagically use it for the transform but it doesn't.
>
> Maybe there is some way - or maybe not, I thought I would ask before
> doing my usual ffmpeg game of trying many many options/variants  in the
> hope that eventually something will work :-)

ffmpeg -i yuv -vf zscale,format=gbrp out.png

for hight bit depth:

ffmpeg -i yuv -vf zscale,format=gbrp16le out.png