AfterCodecs

Windows Media Player doesn't play my video properly !

Same than the previous question about Quicktime Player : be sure you're using using H264 (and not H264 RGB or H265), with the quality slider < 90 and select YUV 4:2:0 (not 4:4:4 !). If it still doesn't work, lower the quality / bitrate and choose the H264 Main Profile.