[Dr Kain]

So I'm just going through my Sentai files and for some reason, half of Nihon's files will not play on my tv. The first 20 episodes of MegaRanger claim the files are not supported, I get no audio in the first 32 episodes of GekiRanger, and the video quality to TimeRanger looks like total ****, especially when I compare it to Over-Time's subs. I do not have the patience to go through every episode, let alone every series, but it really frustrates me.

Is there any way to fix this without having to spend 40 years muxing every episode?