MKV is a HD video format, which is widely used by more and more Film Production. At the same time, if you have many protable devices, you may find this format can’t be played well by most of them. Though Galaxy tab 10.1 is a powerful tablet, but it only can play some mkv videos, not all.
Generally, 720p, 1080p, 1080i are called HD videos, you may view some movies as 720p mkv or 1080p mkv etc. They are all the HD movies. However, the HD movie based on its high quality, most of them have a large size. It’s really inconvenient. As we all konw, Galaxy tab 10.1 has 4G restriction, when the size of a movie is over 4G, it can’t be put onto Galaxy tab 10.1.