Resolved -
This incident has been resolved. Preview images for all new video attachments will be rendered correctly.
Jul 17, 15:29 PDT
Monitoring -
A fix has been implemented and we are monitoring the results.
Jul 17, 15:08 PDT
Identified -
We have identified an issue with media proxy that has led to distorted video attachment thumbnails on mobile. A fix is being deployed at this time.
Jul 17, 14:41 PDT