ffmpeg -f gdigrab -r 7 -i desktop -vcodec libx264 -threads 1 -crf 40 -preset ultrafast -f hls -g 15 -hls_list_size 0 -hls_time 5 -r 7 -pix_fmt yuv420p -maxrate 1.7M -bufsize 3M -tune zerolatency -vf pad=ceil(iw/2)*2:ceil(ih/2)*2 index.m3u8