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 [email protected] _______________________________________________________________________________