Changes between Initial Version and Version 1 of Ticket #2275, comment 3


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Timestamp:
Feb 18, 2013, 4:26:01 PM (4 years ago)
Author:
saste
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  • Ticket #2275, comment 3

    initial v1  
    33> ImageMagick decodes exactly the same (invisible) artefacts as FFmpeg. 
    44 
    5 Indeed it isn't. 
     5Indeed there isn't. 
     6 
     7Check with: 
    68{{{ 
    79ffplay -f lavfi "color=s=400x300:c=white[bg]; movie=ffmpeg-logo.png, [bg] overlay" 
     
    1315}}} 
    1416 
    15 libswscale is stripping the alpha plane when converting from RGBA to YUV, and the display is the natural result of this operation, the only sane path would be to make the output device support alpha, but this is unrelated to FFmpeg. 
     17libswscale is stripping the alpha plane when converting from RGBA to YUV, and the display is the natural result of this operation, the only sane path would be to make SDL support alpha, but this is unrelated to FFmpeg. 
    1618 
    1719Sorry for the noise.