I use the Mobius Action Cam for my in-car video, and an Aim Solo as my lap timer. At the end of a weekend, I use Race Render to combine my videos and overlay them with the Aim data. However, it seems that the camera and lap timer are running at slightly different speeds. I take great care to line up the data and video at one point during the race, but at other times, they are clearly out of sync. And, it is not a constant drift in one direction. It's almost as if one of the units is not running at a consistent speed.
I just put up my latest video on Youtube: , which clearly shows the problem. The AIM had turned itself off while waiting on the grid, so data doesn't start until 09:30. The next few turns are clearly out of sync, with the data lagging several seconds behind the video. I synced at a point close to the middle of the race. Some laps are spot on, while other laps have the data traces just a little behind the video.
I presume the AIM is very precise, making measurements every 0.1 seconds, which get exported as a CSV file to Race Render. I suppose the cameras might have some error in their frame rate due to compression artifact. I suppose Race Render could also be messing up the video frame rate. It makes me wonder if some of the software components are in conflict over frame rates during compression/decompression?
Does anyone have a similar setup, and have you noticed this problem with your videos and data?