convert from 3gp to mp4

[francescoassenza]

I try to convert a 3gp video file to mp4. Sonus do not throw any exception but do not convert my video.

Sonus::convert()->input($video)->output(public_path().'/uploads/'.$filePath.'/full_size/'.$fileName)->go();

If try this with .mov (to .mp4) file it works pretty good...