> Den 03.03.2024 14:40, skrev Rob Prowel via Cin: > > I have 3:2 content that is saved in a 4:3 frame with black bands at > > the top and bottom. > > > > I want to remove the banding such that the output is a 3:2 resolution > > clip WITHOUT DISTORTING THE ORIGINAL CONTENT. > > > > I've tried playing with the crop filter but the black bands remain, > > and the camera automation can remove the banding by zooming in, but > > then the left and right image sides get cropped out of the output. > > > > Is there a tutorial for this exact scenario? > > You can possibly try a test on a file or clip copy using ffmpeg "crop > and resize". > If I understand the problem right, keep the original w(idth) of the > video resolution and use h=w*2/3=w/1.5 > > ffmpeg -i input.mp4 -vf "crop=w:h" output.mp4
It might be simpler with mplayer/mencoder: Run from console: mplayer -vf cropdetect input.mp4 Mplayer prints in the console something like: crop area: X: 5..719 Y: 2..575 (-vf crop=704:560:12:10) 0.9% 6 0 These are actual crop parameters--^^^^^^^^^^^^^^^^^^^^^^ Use them: mplayer -vf crop=704:560:12:10 input.mp4 To recode cropped content add the same -vf option to mencoder. _______________________________________________________________________________ Georgy Salnikov NMR Group Novosibirsk Institute of Organic Chemistry Lavrentjeva, 9, 630090 Novosibirsk, Russia Phone +7-383-3307864 Email s...@nmr.nioch.nsc.ru _______________________________________________________________________________ -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin