[FFmpeg-trac] #10492(undetermined:new): scale_vt does not seems to work correctly

[FFmpeg]

#10492: scale_vt does not seems to work correctly
-------------------------------------+-------------------------------------
             Reporter:  Paul         |                     Type:  defect
  Pacifico                           |
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I've just compiled the latest git version of FFmpeg to use the
 ''scale_vt'' filter.


 **When using:**

 {{{
 ffmpeg -hwaccel videotoolbox -hwaccel_output_format videotoolbox_vld -i
 input.mov -c:v hevc_videotoolbox -b:v 5M
 -vf scale_vt=640:360 -an -tag:v hvc1 ouput.mp4
 }}}

 It does not scale the output.


 **But if I add hwdownload,format=nv12:**

 {{{
 ffmpeg -hwaccel videotoolbox -hwaccel_output_format videotoolbox_vld -i
 input.mov -c:v hevc_videotoolbox -b:v 5M
 -vf scale_vt=640:360,hwdownload,format=nv12 -an -tag:v hvc1 ouput.mp4
 }}}

 The image is cropped to a 640x360 scale.

 I've tried using various input file (8bit or 10bit) same result.

 Paul.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10492>
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