HLS freeze in Safari

Hi, I have problem with an HLS stream, that correctly plays in VLC, some internet players (such a hlsplayer.net, even on Safari), chrome on Android, but freeze on Safari, either on Mac and iOS. The stream is pulled from a raw RTP using a SDP file, RTMP and RTSP streams are OK, Dash also and as I said HLS is OK in most players I tested. I found that when I play it simultaneously in 2 Safari instances (one on Mac, one on iOS) both freeze a the same frame, making me suggest that the browser doesn\’t jump to next segment or doesn\’t refresh the playlist. Here are my API calls :

pullStream uri=file:///streams/demo1234-video.sdp localStreamName=demo-video
createHLSStream localStreamNames=demo-video targetFolder=/var/evo-webroot groupname=hls-video playlistType=rolling keepAlive=1

I do not master m3u8 file format and tags, here is the content of the one generated by EMS :

#EXTM3U
#EXT-X-VERSION:3
#EXT-X-ALLOW-CACHE:NO
#EXT-X-TARGETDURATION:11
#EXT-X-MEDIA-SEQUENCE:2
#EXT-X-PROGRAM-DATE-TIME:2016-11-17T15:48:33.361+00:00
#EXTINF:10.200,
segment_1479397702681_2.ts
#EXTINF:10.167,
segment_1479397702681_3.ts
#EXTINF:10.133,
segment_1479397702681_4.ts
#EXTINF:10.167,
segment_1479397702681_5.ts
#EXTINF:10.200,
segment_1479397702681_6.ts
#EXTINF:10.100,
segment_1479397702681_7.ts
#EXTINF:10.100,
segment_1479397702681_8.ts
#EXTINF:10.133,
segment_1479397702681_9.ts
#EXTINF:10.134,
segment_1479397702681_10.ts
#EXTINF:10.133,
segment_1479397702681_11.ts

any advice ? Laurent