ffmpeg_cheatsheet

txt

-list all available formats
  >ffmpeg  -formats

-how to get aac
  >ffmpeg -i e:\Tasks2\Audio_start\wombat_128.mp3 -c:adts aac -strict experimental -vbr -y e:\Tasks2\Audio_start\wombat_128.m4a
  -instead of <adts> put <aac> for raw stream
  >ffmpeg -i e:\Tasks2\Audio_start\wombat_128.mp3 e:\Tasks2\Audio_start\wombat_128.aac
  
  
-how to check 
  >ffprobe -v quiet -print_format json -show_streams e:\Tasks2\Audio_start\wombat_128.m4a

-how to decode aac to pcm  
  >ffmpeg -i e:\Tasks2\Audio_start\wombat_128.aac -f s16le -acodec pcm_s16le e:\Tasks2\Audio_start\wombat_128.pcm
  
-how to play raw pcm
  >ffplay e:\Tasks2\Audio_start\wombat_128.pcm -f s16le -ar 44100 -ac 2
  
-how to remove adts header from stream
 >ffmpeg -i e:\Tasks2\Audio_start\wombat_128.adts -absf aac_adtstoasc -acodec copy e:\Tasks2\Audio_start\wombat_128_noadts.aac
 
-how to play raw stream 
 > MC
 
-how to make mono from stereo
>ffmpeg -i e:\Tasks2\Audio_start\aqua_5.m4a -f s16le -ac 1 -acodec pcm_s8 e:\Tasks2\Audio_start\aqua_5_s8_mono.pcm