[Ffmpeg-devel] crop, pad, and v4l grabbing

[Erik Slagter]

On Thu, 2006-05-11 at 15:21 +0200, Luca Abeni wrote:
> it's been pointed out to me that the -pad* and -crop* options in
> ffmpeg.c do not work well when grabbing from a video (v4l or v4l2)
> device.

If you like a challenge: use the hardware cropping/scaling capabilities
of the cards. At least the saa7134's driver has this exposed using the
crop ioctl. Maybe other types feature this as well nowadays.