[FFmpeg-trac] #5972(avfilter:reopened): Zscale st_2084 transfer function from ZIMG

FFmpeg trac at avcodec.org
Wed Nov 30 21:40:15 EET 2016

#5972: Zscale st_2084 transfer function from ZIMG
             Reporter:  muxketeer    |                    Owner:
                 Type:  enhancement  |                   Status:  reopened
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  libzimg      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |

Comment (by muxketeer):

 As an alternative to entering the vast land of swscale and it's many
 "features" :), is there a way to chain the zscale filter such that swscale
 filters don't get auto-added?  EG have first zscale filter convert to
 yuv444p16 then have the next(second) zscale filter instance convert to
 Just a brainstorm idea.
 If no, thanks for fixing it in swscale.

 Where is gbrp16 required?    Is it the only format zscale accepts, as
 input, to convert to yuv420p?

 Here's one .tiff encoded in the same way as the OP .tiff files.

Ticket URL: <https://trac.ffmpeg.org/ticket/5972#comment:17>
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