Where AVI stores metadata
AVI is a RIFF file. Descriptive information lives in the INFO list, with four-letter codes: ISFT for software, ICRD for date, IART for author, INAM for title, ICMT for comments. Older cameras and some editors add strd blocks with maker data, and Adobe apps may write XMP.
Does converting the AVI solve it?
Converting to another format re-encodes the video and often carries part of the metadata along. Technical tools can remove the INFO list, but they need a terminal and may leave camera-specific blocks behind. MetaRemove cleans the AVI itself, without re-encoding, and shows what it found and what was removed.