[FFmpeg-user] Fluorescent White Balance Video Filters
Paul B Mahol
onemda at gmail.com
Tue Apr 19 10:29:50 EEST 2022
On Tue, Apr 19, 2022 at 3:34 AM Roger <rogerx.oss at gmail.com> wrote:
> 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,
> blue colors and was viewing the frame within RawTherapee and tinkering
> white balance settings. Low and behold, after applying the "Philips TL85
> fluorescent" (designated as "F10 - Philips TL85") white balance preset
> the red/green/blue values all appeared exact!
> However, I cannot find this preset profile within RawTherapee installed
> 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
> Question, what is the proper method of applying such a missing white
> fluorescent filter to a video file using ffmpeg?
You could try colorcorrect filter. But note that it operates by default in
While other software probably use Lab colorspace.
> I'm surprised there's so little mentioned via a Google search, as users
> always mucking-up the white balance settings while video recording or
> photos, unless using a color/gray card.
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
More information about the ffmpeg-user