TS (Transport Stream) files seem to come in many flavours.
I can edit TS files that come from two out of three of my digital terrestrial recorders, but not my Walker TV.
I've tried ......
Windows Media Player
Media Player Classic
Any Video Converter
Gspot says "Unknown File"
The file is definitely okay and it plays on a USB stick in the TV.
Due to EE restrictions, you will need to rename it from TS File.doc
to TS File.ts