On making days running the app 1a, no matter what I from the iPhone, iPad or the S3 over chic will play without complaint .. on other days go only audio streams and videos, regardless of which app, let you down with the error message "The video could will not play "... And again other days is video and audio but no mirroring.
A regularity, I could not find. Would be nice if the developer still would get to grips with. But since it's all just "reverse engineering", as Apple obviously does not disclose its source code, you can not expect all too much also.