I’m getting the same error trying to use Dropbox, Google Drive, and OneDrive and trying to feed descript the public or download that looks correct from the service.. If I were to venture a guess, I’d say that the Descript API that’s receiving the download links doesn’t like the fact that the download links are missing recognizable filename at the end… in my case that’d be .mp3. All of these seem to just have long hash-y type filenames. That could be entirely incorrect, but regardless I can’t find any combination info from these services that’ll successfully get Descript to start a transcript.
Another attempt gave me this…