Videoplayer.html not able to http live streaming

I am using XSplit to feed live streaming to AMS 5.0 with "RTMP URL as rtmp://localhost/livepkgr" and "Stream name as: livestream?adbe-live-event=liveevent".

By using videoplayer.html from AMS, ok to "rtmp://ams-ip-or-dns/livepkgr/livestream?adbe-live-event=liveevent" to retrieve live traffic very fast.

Then, when I changed to use HTTP as "

<a class="jive-link-external-small" href="http://ams-ip-or-dns/hds-live/livepkgr/_definst_/liveevent/livestream.f4m" rel="nofollow" target="_blank">http://ams-host-ip-dns/hds-live/livepkgr/_definst_/liveevent/livestream.f4m</a>".    It only show "Buffering ..." and could not see anything.

</body

Tested with VOD. no problem when "rtmp://ams-host-ip-dnsvod/mp4:sample_720p_5m.mp4" or "http://10.40.102.91/hds-vod/sample_720p_5m.mp4.f4m"