On Tue, Apr 19, 2022 at 3:34 AM Roger <rogerx....@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, > 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 > filter. > > Question, what is the proper method of applying such a missing white > balance > fluorescent filter to a video file using ffmpeg? >
You could try colorcorrect filter. But note that it operates by default in YUV colorspace. While other software probably use Lab colorspace. > > 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. > > > Roger > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".