/usr/local/bin/ffmpeg -y -i videos/a4m1.mp4 -movflags +faststart -movflags +faststart -s 748x421 -vcodec libx264 -acodec libfaac -b:v 1000k -refs 6 -coder 1 -sc_threshold 40 -flags +loop -me_range 16 -subq 7 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -trellis 1 -b:a 128k -pass 1  videos/processed/a4m1.mp4