Recently I have encountered a strange error using HTML 5 video player and SharePoint 2013. Customers wanted to embed a few video files with subtitles to their portal. They used
mp4 videos and
WebVVT subtitles. The problem was that they didn't see subtitles in IE.
Html5 Video element is used to embed video content in a document. The video element contains one or more video sources. To specify a video source, use either the src attribute or the
<source> element; the browser will choose the most suitable one.
WebVTT is a format for displaying timed text tracks (e.g. subtitles or captions) with the
<track> element. The primary purpose of WebVTT files is to add text overlays to a
<video>. WebVTT is a text based format, which must be encoded in UTF-8 format. Where you can use spaces you can also use tabs. More information about WebVTT can be found here.