filtergraphamovie=a.mp3,
showfreqs,
settb=1000/44100,setpts=N,
format=yuv420p,
crop=10:10:5:100,
hflip,
scale=417:389:sws_flags=bilinear,
setsar=1,
split[right],
crop=208:389:208,
hflip,
[right]overlay[graph];
movie=%2d.png:loop=0,
format=yuva420p,
settb=60/72.69/1000,
setpts=N*1000/16,
split[image],
alphaextract,
avgblur=2:15:2,
eq=gamma=0.3,
[image]alphamerge[image];
[graph][image]overlay,
format=yuv420p