Tool like Media File Segmenter for Linux

"Try ffmpeg. It's powerful & cross-platform. It may already exist in your linux distro. To copy 2 minutes of video after the first and convert from mpg to ts:

ffmpeg -vcodec copy -ss 00:01:00 -t 00:03:00 \
-i input.mpg -vcodec copy -acodec copy \
-f mpegts output.ts

It's a good choice if you have lots of videos in essentially random formats. It's a 'swiss army knife' for video.

If you are starting with mpeg, you could also try mpegtx, which includes a variety of mpeg tools including a splitter. Easier IMHO than ffmpeg to split. To split a file into 10 chunks each with a basename of 'chunk':

mpgtx -10 input.mpg -b chunk

You may also be able to use VLC as a splitter, but I never have. There are topics discussing it, however."