The REAL Transparent Background?

[tazkaza]

I've searched and searched and searched PPCGeeks, Google, and Youtube to no avail! So, now I'm gonna ask you guys:

Many a moon ago (multiple months), I remember watching a video on youtube that showcased one of the neatest camera/background hacks I've seen. The video showed a phone that used a live image being captured by the phone's camera as the Manila background.

Now, I don't remember what the video was called and I can't find it on youtube, but maybe one of you all have seen this hack! If you have, can you point me in the right direction?