Convert a music file (mp3) to a mp4 video with a static image 

ffmpeg -loop_input -i cover.jpg -i soundtrack.mp3 -shortest -acodec copy output_video.mp4

May 17, 2013 — kowalcj0

Explanation

Can come handy when you'd like to post a song to YT or somethin' :)

Can be easily wrapped up in a function:

function mp3tovidwithimg() {
  ffmpeg -loop_input -i $1 -i $2 -shortest -acodec copy $3
}

and used like that: 

mp3tovidwithimg cover.jpeg music_track.mp3 output_vid.mp4
audio video conversion
ffmpeg