A english video file which show the problem
A english video.mp4 (video/mp4), 1.89 MB, created by CH_LUT. on 2021-07-27 00:09:56 UTC
(hide)
 
Creator: CH_LUT.
Created: 2021-07-27 00:09:56 UTC
Size: 1.89 MB

Attachment is not viewable in your browser because its MIME type (video/mp4) is not one that your browser is able to display.

Download the attachment.

Actions: View
Attachments on bug 143477: 173863 | 173864 | 173869