Problem: Footage from my GoPro Hero 7 Black flickers if I shoot indoor.
Solution: Go to Preferences -> Regional -> Video Format. Select PAL.
From my tests, 25 fps and 50 fps are completely flicker free indoor under artificial lights. Computer monitors and TVs are also perfectly fine.
The point is that these rates are only available under PAL. With NTSC you have the option between in 30 fps, 60 fps, and a few more.
The special frame rate of 24 (used in movies) is available in both NTSC and PAL. Though with 24 fps I did notice some slight flicker even with PAL.
Another solution could have been to change the shutter speed instead of the frame rate. Unfortunately, in the Protune menu under NTSC the only available rates are multiples of 1/60. Since the power frequency in Europe is 50 Hz, only rates like 1/50, 1/100, etc will work.
Anyway, changing between NTSC and PAL isn’t that big a deal. I personally like to keep all my footage at 60 fps. When indoor I shoot in PAL at 50 fps and later transcode to 60 fps with FFmpeg.
Categories: Uncategorized
Tags: flicker, gopro, hero 7 black, indoor, video
A side note:
My BENQ BL3200PT monitor is flicker free even when filmed at at 30 and 60 fps. I take this as a positive sign that their flicker free claim is more than just marketing. My LG 4K TV (not marketed as flicker free) does indeed flicker at 30 and 60 fps.