Pocket-size TV signal/tester ???

[hposter]

I still buy the recent CRT sets, mostly analog, and run into the common problem at the garage sales: they show snow, but maybe they work, and maybe they don't!

Is there a video equivalent of the USB Flashdrive/thumb drive, but for, say, a 1 minute video recording, so I could carry it in my pocket, then plug it into the TV coax or RCA Jacks, and watch a bit of Video...or something along this line.

I can't hit garage sales with even a tiny DVD player in my hand, so it would really need to be pocket-size, even a large pocket.

Any help or ideas, would be appreciated... Thanks! Harry