h264 - reversable split and join

[zn]

Is it possible to split TS (h264+mp2) or MKV (h264+mp2) using approximate timestamps into separate sequenced video files (TS or MKV)
and make it possible join splitted files back into single file with uninterrupt h264 video playback?
I am ok with audio mp2 split/join glitches, but I want to have h264 video reversable & clean

[Selur]

Splitting and merging (the previously splitted) mkvs with mkvtoolnix worked fine for me so far.

[kuchikirukia]

Yes. It will only split on keyframes, though. If you don't have one in the exact spot you need you can split out the GOP that straddles it and reencode it, putting a keyframe where you need it.