Can't play back videos on my experna; memory card Sandisk class 4 8Gb.
Have a canon Vixia HFR10 camcorder
Okay, ours is a different brand (JVC) but they may have some basic similarities in function. To playback video clips stored on the memory card, put the memory card in the card reader slot of the computer and put the files onto the computer. Playback the clips from your computer video or photo file. (Ours won't playback video stored on the memory card through the camera.)
To playback video clips stored on the camera hard drive through the camera, we open the viewer screen, look at the function keys on the camera body, select the "Play" button. On the screen it displays thumbnails of the various video clips. We use the toggle/function key to select from the menu containing options for playback, edit, delete, protect, etc.