I film on my scooter using video glasses with a 8GB sd card and always the film footage as been good. Ive used them for 2 years and never had issues till I tried playing a footage and I hear all the sound but no video images, I have tried all programs like VLC, MPLAYERX, and all the other usual names and still no movie pictures. I am using a iOS mac home base and again, its as always worked fine. The SD card is not full as I have deleted it making it full of space. I have also reset the glasses and still nothing is visible. Any ideas from anyone. Thanks