Video progress is not saved properly for videos where seeking is disabled.

[avisochek]

When seeking is disabled, the progress of a video is not saved. This means that when a video is interrupted for any reason (i.e. browser crashes, or is reset or the user can't finish the video in one sitting) then a significant portion of the video needs to be watched over again to return to the same place. I have experienced the issue in Microsoft edge and chrome.

Steps to reproduce.

1. Post a video and disable seeking.
2. Watch the video for several minutes. 
3. Pause the video and refresh the browser.