2 synced video streams

I've been tasked with doing some video work for a new gaming duo team. They will be recording a synced capture of their games to play on tyou tube. As their already synced on vice, is there a way I can out put each of their video's in one large display too. ( like picture in picture but side by side.
Many thanks.
H.D

Hi Russ, I like the sound of this, I've not "Stacked" as you put it before, can you give a little detail please.
Aslo yes to your question, these are independant clips but each has synced voice so one conversation but 2 videos. So rahther do the normal and flip from clip to clip i thought I would try something different if possible.
Many thanks again for your help.
H.D

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yes
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2 synced video streams

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