Hi all,

I have a video where the camera pans quite a bit,
and the scene that the camera started with,
and consequently set its automatic brightness
and contrast to, is very different from some
subsequent things. My question is, is there a
way to do an automatic frame by frame
brightness & contrast adjustment? I am trying
to avoid converting the video to a sequence
of frames and then doing this with The GIMP,
which it is capable of but there are hundreds of
frames so it would be painful for me. I am using
VirtualDub as my primary video editor.

Thanks!

Yap wrote:

Look into Donald Graft's [1] filter collection for VirtualDub and
Avisynth - perhaps you can find something there:

<http://neuron2.net/mine.html>
<http://neuron2.net/hosted.html>
<http://neuron2.net/other.html>

For example, the "Histogram equalization filter" could be worth a try.

_____

[1] <http://neuron2.net/>

--
znark

On 24 Nov 2006 15:40:12 -0800, "Yap" <yubbers9@yahoo.com> wrote:

Sure. No need to export to single frames. In many editing-applications, you
can do keyframes. With keyframes, you set a your correction at the
beginning of the sequence, and your correction correction at the end of the
sequence, and all the intermediate frames will be done automatically via
interpolation. In the more advanced programs, you can select different
kinds of interpolation (lineair, start slow-end fast etc etc), to match
whatever happens to your image.
If there is a part in the intermediate frames, which you don't like, you
can always set-up new keyframes there, and make a tiny adjustment.

cheers

-martin-
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