✳ QUALITY DIAGNOSE
Diagnose: video looks blurry after upload
Dynamic diagnostic state for this problem. Choose a file to run the diagnostic tree; the page rerenders with ranked causes and recommended fixes.
Direct answer
A video looks blurry on a destination when the source resolution or bitrate is below what the player renders, when the file has already been re-encoded several times, or when the platform's own re-encoding produces a lower-bitrate rendition. Check the source first; an already-soft original cannot be restored by re-uploading.
Run the diagnostic tree
The tree combines this problem's static cause ranking with the values the diagnostic engine reads from your file.