Dropbox doesn’t support XAVC/XAVC-S videos – read this article to find the best solution. After reading Dropbox support, I got know that XAVC and XAVC S are unsupported file types that can preview as a video in Dropbox. If you want to upload XAVC/XAVC S to Dropbox, you’d better convert XAVC/XAVC S to Dropbox friendly Read more