[FFmpeg-user] How to make partially transparent png image

qw applemax82 at 163.com
Sun Jun 28 06:02:22 CEST 2015


Hi,


In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file can be partially transparent.


How to make a png file with alpha channel, so that, the background is transparent and the object is partially transparent? Could ffmpeg do it?




Thanks!


B.R.


Andrew


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