[FFmpeg-trac] #6474(undetermined:new): qt targa: unreadable video encoded with alpha channel

FFmpeg trac at avcodec.org
Wed Jun 21 11:16:09 EEST 2017

#6474: qt targa: unreadable video encoded with alpha channel
             Reporter:  NNois        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  mov, targa,  |               Blocked By:
  tga, alpha channel, bgra           |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
 ffmpeg version N-86482-gbc40674

 Hi if I encode a movie in the targa format with the bgra profile the movie
 is unreadable by every software using quicktime as a backend.
 Movie is perfectly readable by mpv thought but that's not helping us ;-)

 the command line used is
 -r 25 -vcodec targa -pix_fmt bgra -metadata:s encoder="TGA" -vendor apl0
 -acodec pcm_s16le -f mov'

 I link below a source file and an "unreadable movie and a working one
 encoded by the quicktime codec.

 If it's a regression anybody is able to tell us which build is ok ?

 It's going to be a problem for us because like I've reported last week the
 prores encoder fail with an alpha channel, the dnxhd too, there is none of
 the "VFX" industry video codec working with an alpha channel with ffmpeg

 Best regards

Ticket URL: <https://trac.ffmpeg.org/ticket/6474>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker

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