[Live-devel] Problem about Application of live555 in embeded system

[尧平]

Good afternoon,every experts!
Sorry to disturb you. I am a master of Central South University(changsha,hu nan province,china).Recently I am work on research of live555 in embeded system.
I come across a big and strange problem when running the test example "testMPEG4VideoStreamer.cpp" in Embeded system.
But it works well in linux system which runs on PC.
the following shows the details:
Environment:
server
  MediaServer:live555
  platform：davinci dm6446,with super terminal together to debug.
  Embeded system：montavista linux
client
  VLC （using vlc to receive video stream  ,windows xp）

test project
The test example in file " testProgs": testMPEG4VideoStreamer.cpp
Problem description
   server: running testMPEG4VideoStream in super terminal.
   client:  running vlc in cmd like this,
               vlc -vv --extraintf=logger rtsp://192.168.1.120/testStream
  
test result: vlc in cmd shows that the buffer fills very slow, it takes nearly 5 minutes to grow up from 0% to 100%. And then show a picture, then     fills from 0% again...this really bother me a lot. But it works very well when I run this test example in linux system(not embeded linux).

VLC cann't play it.

some debugger already done ,this may help you to analyse convinently：
1、if I run the test  testMPEG4VideoStream in linux（ not embeded linux）,it works well.VLC's buffer fills very fast,and plays smoothly.
2、several days ago,I meet this problem which has been solved ：“ Groupsock failed， setsockopt…… no such device”
 some one told me that maybe my kernal didn't support multicast. so I got a way to do like following:
  solution:   
       Firstly,recompile the kernal of montavista linux,add the supportIP:MULTICAST，then download.
         when I run  ifconfigin super terminal, the coming-out messages contain this:UP BROADCAST RUNNING MULTICAST MTU:1500 METRIC 1
         this means the system have supported multicast. right?
      Secondly add  route like this：
             route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
             route add default gw "192.168.40.1 " dev eth0
  （up here ,the error“ Groupsock failed， setsockopt…… no such device”disappeared）
 
That's all.
Waiting for your answer.
 
Thanks！
Ping Yao



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.live555.com/pipermail/live-devel/attachments/20101101/c77bc99b/attachment.html>