... such lossless [video splitter][1] to support and split big video files, such as ... your mentioned TS file. It ... [1]: video-cutter-win/">https://www.joyoshare.com/video-cutter-win/
[2]: https:// ...
tssplitter cannot work well? Then I recommend you to use TunesKit Video Cutter. It can split videos without any quality loss.
... quality of the main TS video file starting with ~5 % percent because ... to have a big impact of the quality of the video. Use again ... the same application and join the files back ...