[FFmpeg-trac] #4746(avcodec:closed): prores alpha blending results in opaque rectangle
FFmpeg
trac at avcodec.org
Tue Aug 4 22:22:29 CEST 2015
#4746: prores alpha blending results in opaque rectangle
-------------------------------------+-------------------------------------
Reporter: | Owner:
projectsymphony | Status: closed
Type: defect | Component: avcodec
Priority: normal | Resolution:
Version: git-master | worksforme
Keywords: prores | Blocked By:
alpha | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Changes (by cehoyos):
* keywords: => prores alpha
* status: new => closed
* resolution: => worksforme
Comment:
Replying to [comment:9 projectsymphony]:
> It's a well known behaviour that when alpha is converted to an opaque
format it is blended with black by default
This is not how FFmpeg or avconv behave (or ever have) and such a
behaviour would be a significant and unexpected change afaict. (And why
should black be the default? See for example laraShadow_dl.flv.)
I am closing this ticket because I neither see a bug nor do I think the
bug tracker is the right place to discuss a significant change of
behaviour: Imo, send a patch (or PoC) to the development mailing lists.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4746#comment:10>
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