[FFmpeg-trac] #6445(undetermined:new): Incorrect Video Levels in vf_colorspace

[FFmpeg]

#6445: Incorrect Video Levels in vf_colorspace
-------------------------------------+-------------------------------------
             Reporter:  maweber      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 trying to set the manual definition of image specs right.
 video levels seem to be handled incorrectly.
 i get "double" videolevels if going from "tv" to "tv", but correct if from
 "tv" to "pc"

 setup:
 - input has video levels (manually set in davinci resolve)
 - input is prores4444 (I think it's neglectable)
 - ffmpeg version git-2017-06-07-1729bf3

 this produces INcorrect videolevels:
 {{{
 # "tv" to "tv",.
 "$FFBIN" -y  -i "V1-0008-vlevels709.mov" -an -filter_complex
 "[0:0]setfield=prog[vtmp1],[vtmp1]\
 \
 colorspace=ispace=bt709:itrc=gamma235:iprimaries=bt709:irange=tv:\
 space=bt709:trc=gamma22:primaries=bt709:range=tv:\
 format=yuv444p12:dither=fsb:wpadapt=identity\
 \
 [vtmp2]" -map [vtmp2]   -c:v prores -profile:v 3  -pix_fmt yuv422p10le
 -b:v 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k  -sn -strict
 experimental -async 1 -threads 0 "V1-0008-vlevels709-2-io-in-cs--
 tvtotv.mov"
 }}}

 this produces CORRECT videolevels:
 {{{
 # "tv" to "pc"
 "$FFBIN" -y  -i "V1-0008-vlevels709.mov" -an -filter_complex
 "[0:0]setfield=prog[vtmp1],[vtmp1]\
 \
 colorspace=ispace=bt709:itrc=gamma22:iprimaries=bt709:irange=tv:\
 space=bt709:trc=gamma22:primaries=bt709:range=pc:\
 format=yuv444p12:dither=fsb:wpadapt=identity\
 \
 [vtmp2]" -map [vtmp2]   -c:v prores -profile:v 3  -pix_fmt yuv422p10le
 -b:v 4000k -minrate 4000k -maxrate 4000k -bufsize 1835k  -sn -strict
 experimental -async 1 -threads 0 "V1-0008-vlevels709-2-io-in-cs--
 tvtopc.mov"

 }}}

 btw I also get wrong auto outputs if I set input params like
 {{{
 "-color_primaries bt709 -colorspace bt709 -color_range tv -color_trc
 gamma22"
 }}}

 if "pc" basically means "100%" I would think this is misleading?

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Ticket URL: <https://trac.ffmpeg.org/ticket/6445>
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