Hi all ,
And also I found if I change the transport protocol to “tcp” with �Ct
option of openRTSP , its performance was worse than “udp”. It is really
strange. TCP should perform much better than udp ,but the result was on the
other hand .
Best regards,
Kevin Liu
From: [email protected]
[mailto:[email protected]] On Behalf Of Kevin.Liu
Sent: 2009年12月20日 18:02
To: [email protected]
Subject: [Live-devel] QOS message of live555 ?
Hi all :
I have made a test on window mobile for openRTSP and I also add the
“-q” option which will print the qos message . And i got the print message
showed that I have lost about 30% packets . I have extended the socket
receive buffer to 2,000,000 and I also used the live555 media server
included in the source code.
The strange thing is that if I transport only audio stream like “mp3
file” the packet lost was very small ,but if I transport both audio and
video stream like “mp4,mpg files” the packet loss was really big.
And I found that a 6M mpg file only transport 37 seconds (sdp message
“a=range:npt=0-37.160”) but a 5M mp3 file transport 301 seconds in the
same network environment.
My live555 version is 2009,9,28 and I have test the lib on pc it worked
really good . Any advice for the question ? please help me out of the
strange problem !
Thank in advance.
Following are the sdp message I got :
1.Mpg file(size 6M)
v=0
o=- 924739507 1 IN IP4 192.168.1.100
s=MPEG-1 or 2 Program Stream, streamed by the LIVE555 Media Server
i=pict.mpg
t=0 0
a=tool:LIVE555 Streaming Media v2009.09.28
a=type:broadcast
a=control:*
a=range:npt=0-37.160
a=x-qt-text-nam:MPEG-1 or 2 Program Stream, streamed by the LIVE555 Media
Server
a=x-qt-text-inf:pict.mpg
m=video 0 RTP/AVP 32
c=IN IP4 0.0.0.0
a=control:track1
m=audio 0 RTP/AVP 14
c=IN IP4 0.0.0.0
a=control:track2
2.Mp3 file(size 5M)
v=0
o=- 5850143118 1 IN IP4 192.168.1.100
s=MPEG-1 or 2 Audio, streamed by the LIVE555 Media Server
i=test3.mp3
t=0 0
a=tool:LIVE555 Streaming Media v2009.09.28
a=type:broadcast
a=control:*
a=range:npt=0-301.840
a=x-qt-text-nam:MPEG-1 or 2 Audio, streamed by the LIVE555 Media Server
a=x-qt-text-inf:test3.mp3
m=audio 0 RTP/AVP 14
c=IN IP4 0.0.0.0
a=control:track1
Best regards,
Kevin Liu
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