ffmpeg -i $i $i.yuv
./HDRConvert -f NEWHDRConfig.cfg -p SourceFile=$i.yuv -p OutputFile=$i-420.yuv
ffmpeg -r 50 -video_size 3840x2160 -pix_fmt yuv420p10 -i $i-420.yuv -vsync passthrough -strict -1 $i-420p.y4m