[theora] How to merge and cut theora videos, and how to synchronize sound?

[Lucas Malor]

Thank you all for the help. I'll use liboggz but I think I'll not use
HandBrake: in addition to non-supporting ogg, it doesn't have a stable
version for linux.

I found right now that VLC can do what I need and more:
http://wiki.videolan.org/Documentation:Streaming_HowTo

I'll try to use it too. Keep finger crossed please :)

PS: I noticed a worrying lack of support for Ogg, and Theora in
particular, in programs for Linux too. For example: Avidemux, Cinefx,
Kdenlive, Openshot.
Cinelerra support Theora, but see what the producers write:
http://heroinewarrior.com/cinelerra/cinelerra.html#OGG-THEORA_002fVORBIS
It's simply discouraging.