You haven't said what is your system, software and hardware, what version of resolve are you using free or studio, what version number of resolve and keep in mind AVI is a container. Its not clear what it is inside.
https://en.wikipedia.org/wiki/Audio_Vid ... kin=vectorDownload media info tool and find out.
https://mediaarea.net/en/MediaInfoDaVinci Resolve 19.1 Supported Codecs 13 Nov 2024
This reference list provides you with a quick and easy way to identify the formats and codecs supported by DaVinci Resolve 19.1.
https://documents.blackmagicdesign.com/ ... 1484810000https://www.blackmagicdesign.com/support/...after that post a diagnostics log for developers. FAQ section of the forum explains how.