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ffmpeg scaling issue

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Jack Passmore
ffmpeg scaling issue
on Sep 29, 2010 at 7:22:01 pm

Hi All,

I have a large video file: 1920x1080, 16:9, .avi, 8-bit blackmagic mjpeg, that I'm trying to convert - using ffmpeg at the command line - to a h264, mp4, 640x480, 4:3, video.

The 1920x1080 is a pillar-boxed image, so I'm attempting to crop the sides and then scale down the video to a 4:3, 640x480 video. Unfortunately, when I run the command I get a 640x480 video, but it's only the top left corner of the 1920x1080 video. This is the command I'm using in terminal:

ffmpeg -i video.avi -cropleft 240 -cropright 240 -s 640x480 -aspect 4:3 -vcodec libx264 -vpre normal video.mp4

Any suggestions would be greatly appreciated!
jack


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