Not really a snippet, still a good fix for a big annoyance. Temporarily disable the speaker by removing the driver for it.

   1  sudo rmmod pcspkr

To make the silence more permanent add this line into /etc/modprob.d/blacklist

   1  blacklist pcspkr

Create an flv movie that is 320 wide by 240 high. For audio functionality ffmpeg needs to be compiled with the following parameters:

   1  --enable-amr_nb 
   2  --enable-amr_nb-fixed 
   3  --enable-amr_wb 
   4  --enable-mp3lame 

The snippet itself:

   1  ffmpeg -i mymovie.avi -s 320x240 -ar 44100 -r 12 mymovie.flv