I was asked to shoot a video for a relative not too long ago. I have to admit that I'm a very big advocate of using manual exposure in my video shooting. In fact, about 90% of the time, I shoot on manual when using video for my own projects. However, upon reviewing the footage that I shot for the relative, it seems that for some crazy reason, I had shot one particular scene using auto exposure and it was a situation that wouldn't really benefit from auto exposure in any way. I don't know what I was thinking at the time but now I am really kicking myself for it.
As people (wearing a mix of dark and light clothing) pass by the camera, the aperture is opening and closing, resulting in fluctuations in exposure - one of my pet hates. They are generally not huge fluctuations for the most part. A lot of the really severe changes in picture brightness have been edited out. Even so, the exposure changes in the final edit are distracting nonetheless.
In order to try and correct the problem, I was considering going through the footage frame by frame and adjusting the brightness of individual frames as required but I'm not sure if I would have the patience for that. Is there any freeware out there that evens out changes in exposure in footage? I have a recommended deflicker plugin in Virtual Dub which I have tried on a clip from the footage but that does absolutely nothing - no changes at all. I'm not expecting perfect, seamless results but something that will make the footage look more acceptable and less distracting.