On Tue, Apr 19, 2022 at 8:25 PM Michael Koch <astroelectro...@t-online.de> wrote:
> Am 19.04.2022 um 03:34 schrieb Roger: > > 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? > > I would do that with a color-look-up-table. The procedure is described > step-by-step in chapter 2.27 and an easier simplified version is > described in chapter 2.28 in my book: > http://www.astro-electronic.de/FFmpeg_Book.pdf Your book multiple times calls multiple functionality in FFmpeg stupid. > > > Michael > > _______________________________________________ > 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".