Catch RuntimeException from isoparser and add regression test

[tsautier]

Problem

MediaInfo parsing could crash the slave when casting to int fails. The isoparser library throws RuntimeException on certain malformed media files, causing the slave to disconnect.

Solution

Catch RuntimeException from isoparser and handle gracefully instead of crashing.

Changes Made

• Added try-catch block around isoparser calls
• RuntimeExceptions from malformed media files are now logged and handled
• Slave no longer crashes on problematic media files

Fixes: #198

[tsautier]

@mvangoor @hrxcodes for review