TS (Transport Stream) is a digital video format for saving video data on a DVD. It uses MPEG-2 compression on its video data, and the files come with a VIDE0_TS directory. TS files are straightforward on most computer video editing programs and media players.
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HEVC MKV is a digital media format that uses HEVC codec, instead of the usual H.264, which is used on typical MKV files. HEVC MKV files are encoded at lower bitrates than H.264 MKV, making them smaller by up to 50%. However, software and hardware support for HEVC MKV files is quite limited as opposed to H.264 MKV, which ranks among the most popular media formats today.
VLC Media Player
MKV File Player