Use checked exception for bad input file

[ypresto]

trafficstars

java.lang.IllegalArgumentException: extractor does not contain video and/or audio tracks.

This error is very annoying because it is runtime exception and is caused by malformed input i.e. not bug.

[mechazod]

@ypresto Is there any chance that accept mp4 file can process with mono track audio coz it was generated by AZ Screen Recording app.