I have video hosted on cdn, and protected by the access control with timestamp sign parameter like below url

http://example.com/xxx.mp4?sign=bac9f2b32330d79d97c7022f2518&t=61df9fc7

When the video is very long, the sign will expired. So I need to update the sign.

So I change the sign every time before it expire and change the video's src. But it will lead the video stop play and back to the begin.