In Belgium, "visioneren" is the Dutch word for the process of "approving video material before usage in broadcast". This is done by the director, or someone else working for television/the movies, to quickly weed out those filmed clips that do not meet a certain standard.
This process happens after filming (=at this point there is lots and lots of material) and before editing (=at this point everything that is truly unusable for the final movie/episode/... is taken out). Meaning that when the actual movie is put together, the editor is not distracted by "the really bad stuff". It's possibly that "visioneren" is in fact the first thing done by the editor: throwing away everything that can not possibly have a good impact on the final product.
Possible things that the "visioneren"-process could take out:
- Poor lighting: The clip is so dark or so overlighted that it cannot be used
- Something inscreen: A mic got in screen in this clip. Throw it away so this does not end up in the final product.
- Poor content: Something that might have seemed a good idea during filming but now it appears that the clip does not contribute to the story, is not funny etc, so it's thrown away
- Anything really that makes the one doing the "visioneren" think: If this is put in, it will make for a worse show/movie.
"Standaardtaal in België voor: keuren voor vertoning of uitzending." http://www.vrt.be/taal/visioneren
Is there an English equivalent?