Ubuntu – What video editing programme is capable of placing two videos side by side

There's a tool called 2srt2ass that can take two langauages in two separate subtitle SRT files and combines them into one SSA/ASS file, showing one language at the top of the screen and one at the bottom.

Something like that's probably the cleanest solution in terms of playback (you can just use the player you would have anyway) but it's a bit of a faff to get started if you've got lots of videos to do this for.

Alternatives that do the same thing: SrtMerger

There's also an awk script on Ubuntu Forums that might be able to do the same thing.