I ripped Spider-Man 2 to an MKV and upon watching in VLC, the audio cut off around the 1:25:00 mark. The video then glitched and skipped ahead to around 1:30:00, and played fine til the end. I re-ripped the title, and this time I got a larger file. Using MediaInfo I found that the only difference between the two files was that the TRUEHD 5.1 audio stream increased from 1.94GB to 2.00GB. The title plays perfectly fine now with no hiccups.
What exactly happened here? Why wasn't the full TRUEHD 5.1 audio track extracted properly the first time? How can I check if my other rips didn't suffer from the same glitch?