https://bugs.kde.org/show_bug.cgi?id=516966
Jean-Baptiste Mardelle <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REPORTED |RESOLVED Resolution|--- |NOT A BUG --- Comment #2 from Jean-Baptiste Mardelle <[email protected]> --- Just tested again by placing a png image with alpha and rendering in the various proposed formats (mov, vp8, vp9) and all render a correct video with alpha. The problem is that FFmpeg's internal decoder for vp8/vp9 does not support alpha. This explains the misdetected yuv420p format. If you enforce the libvpx decoder like this on a vp9 video: ffmpeg -c:v libvpx-vp9 -i 01.webm It will correctly detect the yuva420p format -- You are receiving this mail because: You are watching all bug changes.
