RTP timestamp issue when streamming from vidiator server(Live streaming)

Hi,

There is a live vidiator server streaming link and upon trying to stream
from this link helix client receives few audio stream RTP packets with
timestamp less than the RTPOffset time initially. It causes helix time
calculation failure. 


Here is the RTP PLAY command and PLAY response from vidiator server. 


PLAY dynstream RTSP/1.0
CSeq: 7
User-Agent: RealMedia Player HelixDNAClient/10.0.0.6839 (S60 HX
cvs_cays221_20080327:05:00:00utc 27 Mar 2008 21:00)
Session: C03A5301C621C22D
Range: npt=0-
Bandwidth: 1432572


RTSP/1.0 200 OK
CSeq: 7
Date: Tue, 15 Apr 2008 16:34:11 GMT
Session: C03A5301C621C22D
Range: npt=now-
RTP-Info: url=rtsp://10.63.48.228/dynstream/2;seq=1;rtptime=180000,
url=rtsp://10.63.48.228/dynstream/1;seq=1;rtptime=180000
Server: Vidiator Server/3.3


Sample RTP Audio Packet timestamp sequence

SEQ: 1,  Timestamp: 164000*	
SEQ: 2,  Timestamp: 166560*
SEQ: 3,  Timestamp: 169120*
SEQ: 4,  Timestamp: 171680*
SEQ: 5,  Timestamp: 174240*
SEQ: 6,  Timestamp: 176800*
SEQ: 7,  Timestamp: 179360*
SEQ: 8,  Timestamp: 181920
SEQ: 9,  Timestamp: 184480
SEQ: 10, Timestamp: 187040
SEQ: 11, Timestamp: 189600
SEQ: 12, Timestamp: 192160

Sample RTP Video Packet timestamp sequence
SEQ: 1,  Timestamp: 180000
SEQ: 2,  Timestamp: 187200
SEQ: 3,  Timestamp: 194400
SEQ: 4,  Timestamp: 201600
SEQ: 5,  Timestamp: 208800
SEQ: 6,  Timestamp: 216000
SEQ: 7,  Timestamp: 223200
SEQ: 8,  Timestamp: 226800
SEQ: 9,  Timestamp: 234000
SEQ: 10, Timestamp: 241200
SEQ: 11, Timestamp: 244800
SEQ: 12, Timestamp: 252000

We could fix this error in couple of ways as given below.

1) Drop RTP packet(s) with timestamp < RTP offset time
2) If the first RTP packet timestamp is less than the received RTP
offset time  correct RTP offset time to first RTP packet time.

Looking for input/suggestion from community to make a fix to this
failure.

Thanks
Saleem

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