So I recently decided to put some videos on my new Rezound. Most of the videos I want on it are 720p .mkv files in H264 codec. So, I downloaded a few video player apps to test them out. I downloaded MX Video Player, mVideoPlayer, and MoboPlayer. Lo and behold, when I tried to play my videos on them, they would all blackscreen, freeze, and crash the player. The only way I could get them to work was with the "soft decoding" option in MoboPlayer, and even then, they were stuttery and had inconsistent FPS. They were barely even watchable. My question is: what can I do to get these videos to work properly on my device? I'm sure it has the hardware necessary to play them, but they just don't work. I'm also sure the videos themselves are in a working condition. Help me out, please. Edit: Figured out how to make my videos work beautifully. Basically, you have to get "MX Video Player". On its own, it doesn't work that well and frequently crashes when attempting to play .mkv files. What you have to do is install "MX Video Player CODEC (ARMv7)". Once you have that downloaded, you're going to want to open up MX Video Player. Press your menu button and select "Preferences" in the menu that pops up. From there, find the option "S/W Decoder" and make sure it is checked. Uncheck "Fast Mode" if you feel the need (it should work just fine in non-fast mode on the Rezound). Both of these options are under the header "Decoding". That's it! Enjoy your .mkv files to their fullest on your gorgeous 720p screen. With the codec installed, software decoding works beautifully with no stuttering.