Merge pull request #13824 from huchengtw-moz/video/Bug_938967_00-00_is_not_handle_correctly

Bug 938967 - [fugu][hamachi]The video had be sought to 00:00 could not b..., r=djf
(cherry picked from commit fe33351a4a460172212ad234b1a98ba2dcd29ac4)

Conflicts:
	apps/video/js/video.js
Merge pull request #14334 from huchengtw-moz/video/bug_938967-v1.2

Merge pull request #13824 from huchengtw-moz/video/Bug_938967_00-00_is_n...