A green stripe on the right/bottom is usually due to a different issue: interpolation errors in chroma planes when decoding YCbCr video. The chroma planes use a

A green stripe on the right/bottom is usually due to a different issue: interpolation errors in chroma planes when decoding YCbCr video. The chroma planes use a biased encoding where 0 (no color) is mapped to 128. A sloppy YCbCr to RGB conversion without proper clamping can interpolate against 0 at edges, which is interpreted as max negative chroma red/blue -- which combined together produces green. This can happen either due to an incorrectly padded texture or failing to handle the special final sample case for 4:2:2 chroma. This issue can happen with overlays, but also non-overlay GPU drawing or CPU conversion routines.