How to change movie release date exif date in bulk?

Is it possible to batch change Release date attribute for video files? Either just delta hours/minutes, or copy from filename, or copy from some other attribute? I don't see a way to do that. Any help is appreciated.

Hm based on this page, I would have thought this would work:
SetAttr META "releasedate:createdate"

But it doesn't seem to. I assume behind the scenes, the release date metadata keyword isn't exactly the same as the created date and others where they say:

Accepts the same values as createdate (described above).

Because this one does work for example:
SetAttr META createdate:lastmodifieddate

Using this command, then something like this:

MetaWizard FIND .* REPLACE {created} REGEX PROPERTIES=releasedate NOGUI

In a quick test, it allows you to copy the creation date into the release date.
You can use other date values as well.

rivage,
Having tested video date metadata extensively, I have found that the only video file extension in the consumer collections I organize for which Release Date is often reliable is .WMV.

You will need a script or a tool like ExifTool.

Should be possible with the Evaluator.