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Niklas Haas
b7946098b1
This function overreads the input plane for odd dimensions, because the chroma plane is always rounded up, which means (xy << subsample) + 1 exceeds the actual alpha plane size. To verify: valgrind ffmpeg -pix_fmt yuva420p -f lavfi -i color -vf \ "scale=1x1,format=yuva420p,scale=alphablend=uniform_color,format=yuv420p \ -vframes 1 -f null - Fixes: https://trac.ffmpeg.org/ticket/11692