Originally Posted by Licaon
what exactly should i disable when encoding ?
There's presumably an option to select which H.264 profile to encode into. Pick a supported value (right now, it's High 4:4:4, but VDPAU only supports 4:2:0 profiles such as baseline/main/high). There might be an explicit 4:4:4/lossless option that's selected, which needs to be disabled.