GOM Media Player
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Full user review
"Won't work on my old computer"
Won't play HD video on my old 3GHz, 1GB Ram computer.
See above. If you are in my situation, try Splash Lite, the only one that would play my m2ts HD video files. I also tried all the other popular HD video player software here; only Splash Lite worked -- don't know why more people don't try it (and it's free!).