Watched a few old Star Wars VHS tapes over the Christmas holidays, more than half of them are failing. The movie plays very dark now, it is possible that the same thing is happening to the mtn bike videos, I haven't checked mine yet.
Video tapes are supposed to be somewhat refrigerated with zero humidity for longer life.
When I worked at CBC downtown the tape library was in a sealed room, I think it was about 12 degrees in there.
Best thing to do it is transfer to DVD- or vid file. They eventually disintegrate.
Costly and a pain in the ass? Probably
People always ask me what's the phenomenon
Yo what's up? Yo what's goin' on- Adam Yauch