[Asterisk-video] Getting back the dtmf from app_mp4

[Robert Bielik]

I'm calling app_mp4 from a fastagi app. mp4play gets interrupted when the user presses any key, and it seems that
the value of the key is not propagated to the output of mp4play. I always get zero as output value.

I can easily change this to it returning the dtmf char code, but I don't know if its the right thing to do...

Ideas?
TIA
/Rob