 -i  "source.mov"  -af areverse  "output.mp4" 
 -i  "source.mov"  -vf reverse -af areverse  "output.mp4" 
 -i  "source.mov"  -vf reverse  "output.mp4" 
 -i  "source.mov"  -ss 00:03:00  -vframes  1  "output.png" 
 -i  "input.mp4"  -vn  "output.mp3" 
 -i  "input.mp4"  -c:v copy -an  "output.mp4" 
 -i  "input.mp4"  -vf scale=1920:1080  "output.mp4" 
 -i  "input.mp4"  -b:v 1000k  "output.mp4"