FFMPEG BEST CODE

MKV TO MP4

for i in .mkv; do ffmpeg -y -i "$i" -f mp4 -r 25 -vcodec libx264 -preset ultrafast -filter:v scale=w=704:h=304 -b:v 1000k -aspect 16:9 -flags +loop -cmp chroma -b:v 1250k -maxrate 1000k -bufsize 4M -bt 256k -refs 1 -bf 3 -coder 1 -me_method umh -me_range 16 -subq 7 -partitions +parti4x4+parti8x8+partp8x8+partb8x8 -g 250 -keyint_min 25 -level 10 -qmin 10 -qmax 51 -qcomp 0.6 -trellis 2 -sc_threshold 10 -i_qfactor 0.71 -acodec aac -strict experimental -b:a 112k -ar 48000 -ac 2 704_"${i%.}.mp4"; done