Hi Since IE 11 expects "Accept-Ranges" [0] response header to start making requests with Range header, so sling lack in streaming of video content for IE users. We can add Accept-Ranges = bytes header to response , either selectively only for video/mp4 mimetype ( video tag on IE looks for mp4 ) or set this header always.
Without support of partial content response (206) for IE users, all large video files are being downloaded in single chunk and user need to wait for long to see video content playing. Created a Sling issue [1] for this and attached a patch which sends appropriate response header only for video/mp4. -Ashok Kumar [0] http://stackoverflow.com/questions/25654422/http-pseudo-streaming-in-ie11 [1] https://issues.apache.org/jira/browse/SLING-6046
