How to remove brightness variations
Info Brightness variations are caused by frequency differences. For example, an old movie is projected at 15 fps on a whiteboard and filmed with a DV camera at 30 fps. Or a film is shot in a sports hall with poor lighting having a low frequency component.
This results in brightness variations which may be slow (period of several seconds) or fast (many oscillations per second). JVC removes these fairly wel, though not perfectly.
JVC does a histogram analysis to find the relative brightness of frames. Then it tries to lock to the variations and scales up the darker frames.Settings Currently no user settings are available. The average period and attenuation are displayed for your information.