[FFmpeg-user] Fluorescent White Balance Video Filters
rogerx.oss at gmail.com
Tue Apr 19 04:34:29 EEST 2022
I'm not finding much about fixing video having incorrect white space, more
specifically video with incorrect or forgotten fluorescent white balance
setting during recording.
I have a very old VHS recorded tape without a fluorescent white balance
applied, and as such a green mask throughout the video.
I started examing one frame of the video, luckily having distinct red, white,
blue colors and was viewing the frame within RawTherapee and tinkering with
white balance settings. Low and behold, after applying the "Philips TL85
fluorescent" (designated as "F10 - Philips TL85") white balance preset profile,
the red/green/blue values all appeared exact!
However, I cannot find this preset profile within RawTherapee installed files,
nor do the *.pp3 sidecar files indicate specific values, hinting the values are
either hard-coded or further buried within the installed system files, for
which fgrep insensitive searching still fails to find the specifics of this
Question, what is the proper method of applying such a missing white balance
fluorescent filter to a video file using ffmpeg?
I'm surprised there's so little mentioned via a Google search, as users are
always mucking-up the white balance settings while video recording or taking
photos, unless using a color/gray card.
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