[FFmpeg-trac] #6675(avcodec:open): Cineform decoder distorts lower 8 pixels on 1080 video

[FFmpeg]

#6675: Cineform decoder distorts lower 8 pixels on 1080 video
------------------------------------+-----------------------------------
             Reporter:  Garbord     |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  CFHD        |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:   => CFHD
 * priority:  important => normal
 * version:  unspecified => git-master
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 ~~Thank you for the sample, I agree that it shows a possible issue with
 FFmpeg.~~

 ~~I am not sure I understand completely though:
 On the file host, you provided an output file for comparison (you should
 not never do that unless asked, this ticket is another good example why),
 the png image looks very colourful here, and a little ugly on the bottom,
 as indicated by you.
 You also uploaded a cineform file (I wonder why it is so big: Is there any
 difference between the first frame and the other frames, except for the
 timestamp?) - it looks less colourful here, actually black-and-white.
 Is there any connection between the mov file and the png file you
 provided? Is the bug that the mov file is supposed to show colours other
 than black and white?~~

 Just allow me to say that I am not 100% convinced that uploading a 1GB
 sample with three (or four?) different frames is super-useful.

 Not a regression afaict.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6675#comment:4>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker