#4746: prores alpha blending results in opaque rectangle
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Reporter: | Owner:
projectsymphony | Status: new
Type: defect | Component: avcodec
Priority: normal | Resolution:
Version: git-master | Blocked By:
Keywords: | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by michael):
The file plays fine, but the player you use ignores alpha. (many players
ignore alpha, isnt really wrong if they do if theres nothing behind)
if you render the file over a black background you get the fading
{{{
./ffplay proresalphablock.mov -vf
'scale[in],color=black:1920x1080[back],[back][in]overlay'
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/4746#comment:7>
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