TS stands for Transport Stream and it is the default video stream format that is used to store video on a DVD.
Since TS format is still not widely supported by multimedia applications, users will need specialized utilities to modify their TS files.
TS editors will allow users to apply watermarks onto their clips or to choose video effects for enhancing the movie's appearance.
Also, these applications will also offer users the possibility to split, join or merge their videos, while also being able to convert TS videos to more popular formats.