I've reviewed the soundtrack submission guide and don't find, or missed, anything related to archive footage. There's plenty on uncredited, though. If the song was shown as a clip, will archive footage be accepted as an attribute by staff?
Apologies for the delay in replying here. I have reached out to our data editors to confirm if these attributes can be displayed within the Soundtrack section (and if so, will confirm the formatting), as soon as I hear back I will post the relevant information here.
Following up here to confirm that, unfortunately, the "Archive Footage" attribute cannot be used for Soundtrack data. So if you are submitting soundtrack data, you can still submit the song but should omit the archive footage attribute.