Can you playback video from an analog camcorder through a digital tv?

Yes, most analogue camera's have an AV output. It may have a special small plug and an adapter ending in 3 phono plugs. Red=Right audio, White=Left audio, and Yellow= composite video.

Most Digital TV's have AV inputs, which you can select from the menu.

Connect the cable to the TV, select the correct AV in, play the camera. It should now show on the screen.