[FFmpeg-user] Extracting frames from 59.94 FPS video - only every other frame is different

[Moritz Barsnick]

On Fri, Dec 01, 2017 at 21:33:32 +0000, Andy Furniss wrote:
> Maybe it's intended by the camera eg. the early part is lower motion or 
> lower light level.

Actually, googling for this issue gives a lot of hits, such as this:
https://community.gopro.com/t5/Cameras/High-speed-video-frame-doubling-issues/td-p/15968

So, yes, it's exposure, and you can turn "Auto Exposure" off.

Moritz, no GoPro.