[FFmpeg-devel] [PATCH] avfilter: add pixscope filter

[Dave Rice]

> On Apr 24, 2017, at 4:47 PM, Paul B Mahol <onemda at gmail.com> wrote:
> 
> On 4/24/17, Dave Rice <dave at dericed.com> wrote:
>> 
>> I tested this filter and find it very useful, but could it be adjusted to
>> handle full range video. Currently when I test with a sample such as:
>> 
>> ./ffplay -f lavfi -i
>> color=c=white:s=640x480,format=yuv444p,lutyuv=y=255:u=248:v=10,pixscope
>> 
>> The outputs list Y=235, U=240, V=16.
> 
> Hmm, I cannot reproduce this with my old ffplay build or latest mpv or
> latest ffmpeg.
> 
> So it must be ffplay issue.

Can you recreate it with:

./ffmpeg -f lavfi -i color=c=white:s=640x480,format=yuv444p,lutyuv=y=255:u=248:v=10,pixscope -f nut - | mpv -

Dave