For tablet users, watching movies is a good choice to kill boring time. However, most tablets only support limited video formats. Though iPad 3 is powerful enough to read HD even full HD movies, it only can play .mp4, .m4v, .mov files. Common mkv movies can’t be played smoothly.
If you want to play MKV HD movies on iPad 3, you should use a third party tool. I recommend you Pavtube video converter. Which is a professional video tool and easy to use, though you are a beginner to deal with videos, you can operate it easily. Besides, it’s designed based on NVIDIA CUDA and ATI Stream (AMD APP) acceleration technologies. so you can get the result video in a shorter time and with quality lossless.