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

[Andy Furniss]

Will Price wrote:
> Hello,
> 
> I'm having a strange problem when extracting frames from a video recorded from a GoPro HERO 5 Black camera (1080p, 60FPS, Linear FOV). When I view the extracted frames it appears that every two frames is a duplicate of one another, i.e. frames 1 and 2 look the same, frame 3 shows a change, but frame 4 again looks the same as 3.

Only sometimes - there are also runs of different frames.

> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55c3a7e709c0] Using non-standard frame rate 59/1

Maybe something to do with this.