AVReceive / AVTransmit
Hi all,
i'm trying to use AVTransmit2 and AVReceive2 without any success.
Both compile and run perfectly.
When testing AVTransmit, if i define as the destination IP 127.0.0.1 i can see the packets using ethereal listening to "lo" (with an obvious UDP error - same origin and destination port)
If i try to send to another IP Addr. i can't see the packets passing through eth0 on their way out.
When i try to test AVReceive, i use another machine to send a RTP/UDP stream.
AVReceive simply prints
"Waiting for RTP data to arrive..."
What is strange is that i can see the RTP/UDP packets flowing through the interface (on their way in) of the receiving machine where AVReceive is running.
I've tried this procedure in 2 different Linux boxes and on Windows.
It almost seems that both AVReceive2 and AVTransmit2 can't "access" the network interface....
Any suggestions?
1st test
use JMStudio on BOTH machines
set one up to transmit & the other to receive
prove you can send / receive video file
2nd test
replace transmitting JMStudio with your transmitter code
(use settings from test #1)
prove you can send / receive video file
3rd test
replace receiving JMStudio with your receiving code
(use settings from test #1)
if still having problems post up your code - someone will take a look & lend a hand
Hi Stefan, thank you for your reply.
I've tried using JMStudio without success. I've used it in both linux boxes.
While using JMStudio i can't see the packets leaving or arriving in either box.
I've also tried to use another example (AVCustomRecv/AVCustomTrans) which also didn't work.
Another question:
JMStudio complains about some type of media that i try to stream. When trying some .avi and .mov only the audio is "streamable" by JMStudio.
Where can i find the supported formats or codecs, or the support depends on the codecs installed in the box?
Thanks in advance.
Does JMStudio let you play an avi/mov file on its own
If NOT then I think you may have not installed JMF completely/properly
Supported Formats can be found here
http://java.sun.com/products/java-media/jmf/2.1.1/formats.html
Have you tried the JMF Diagnostic
http://java.sun.com/products/java-media/jmf/2.1.1/jmfdiagnostics.html
It ONLY tells you ->>
JMF Version... 2.1.1e
Win32 Build
Native Libraries Found
JMF Diagnostics:
Java 1.1 compliant browser.....Maybe
JMF classes.....Not Found
I'm running a Ubuntu box with Firefox 1.0.7
I've noticed, in the meantime, that using the code in Windows works. At least i can see the packets being sent through the eth0 interface.
Can it be any problem related with Linux? Codecs missing...
What's strange is that i can open any .avi or .mov file with mplayer or vlc, so the codecs are there. Maybe JMF isn't aware of the codecs...
I really don't know...
Have you checked the Linux installation http://java.sun.com/products/java-media/jmf/2.1.1/setup.html
Yes, i've checked and followed the instructions.
The message from the JMF Diagnostics is the same.
I've updated Firefox to the latest version.
I'm convinced that the problem is in the relation between Java and Linux...
To install Java i used the bundle NetBeans IDE + J2SE SDK...
Also, JMStudio complains about almost every file type... Isn't this an import symptom? Can i do anything in JMFRegistry? I've seen the instructions but i really don't know if any thing must shoud be added...
I don't really don't know what else to do.
I'm running a Ubuntu box with Firefox 1.0.7Have you tried this with the JMF Cross platform installation rather than the Linux performance pack installation http://java.sun.com/products/java-media/jmf/2.1.1/setup.html
I've just tried the JMF cross platform but everything stayed the same.I've got all the env variables defined correctly.
The only other comment / suggestion / questionHave you checked your app when running as a Root user
I've been trying to, simply, send a stream using JMStudio. I'm convinced that as soon as that's solved, everything will come together.
Right now i'm getting a different message on JMF Diagnostics
JMF Version... 2.1.1e
All Java Build
Native Libraries Not Found
This happened because i changed on the Java Control Panel the JRE from "Default" to the one i got installed. I don't have any other JRE so i don't know what he was assuming as Default.
The env vars are:
LD_LIBRARY_PATH=/opt/JMF-2.1.1e/lib:
JAVA_HOME=/opt/j2sdk1.4.2_11
JMFHOME=/opt/JMF-2.1.1e
CLASSPATH=/opt/JMF-2.1.1e/lib/jmf.jar:.:
Which i added to .bashrc in my profile and on the root profile.
I'm not sure about JAVA_HOME...
Any ideas?
Thanks for all the help.
Can you please show me your env vars?In the JMF Diagnostics page, the Native libraries belong to JMF or Linux? I mean, the libraries that are missing should be provided by the OS or Java?Thank you.
Sorry, I'm not running a Linux build at the moment
For the Linux performance pack installation
From
http://java.sun.com/products/java-media/jmf/2.1.1/setup-linux.html
JMF 2.1.1 Setup
Linux
Setting Up JMF
This page describes how to set up and run JMF for Linux, an optimized implementation of JMF that contains class files and native libraries for running JMF players.
So the NATIVE libraries should be included in the download
NOTE also from
Check the hardware and software requirements.
ie Here
http://java.sun.com/products/java-media/jmf/2.1.1/requirements.html#linux
It suggests
Software Requirements
RedHat Linux 6.2 or better.
Can you find a machine to install RedHat & then try with that
Initially just prove JMStudio runs a movie/avi
Then check transfer from redHat machine to/from a windows machine (where you already know it works)
JMF Version... 2.1.2
All Java Build
Native Libraries Found
Sun Java Desktop System
All JDS systems have java JMF installed correctly.
The trick is to install jmf into correct JRE directory.
I have the following:
/usr/java/j2redefault/lib/jmf.properties
/usr/java/j2redefault/lib/ext/jmf.jar
/usr/java/j2redefault/lib/ext/jmplay.jar
/usr/java/j2redefault/lib/ext/jmfmp3.jar
Then make sure that the *.so libraries are installed in the correct location.
After installing jmf, the jmf/lib folder will have libjmf.so, and some others.
Copy all of the *.so files to
/usr/java/j2redefault/lib/i386/
This should get the Native Libraries found, if your browser is using the correct installation of java.
It worked! Thank you!
Just one question.., I just tried to send a file using JMStudio to another machine. I tried to see the packets going out through the interface but i didn't see any. I'm only able to see the packets leaving and arriving the other machine if i use a multicast address.
Have you tried any of this situations?
Even when i see the packets arriving at a machine, JMStudio running on that machine can't open the Stream...
Thanks again for the help
Your host name/IP must be set
eg. If you type..
more /etc/hosts
and get in response ..
127.0.0.1 localhost
It will not work.
You need to do an ifconfig, get your IP address, and map it to your hostname.
Type:
hostname
ifconfig
then add into your /etc/hosts file a new line, so the file looks something like .....
127.0.0.1 localhost
192.168.xxx.xxx linuxHostName
don't forget to do a /etc/init.d/network restart
I think this will solve your problem,
You solved the problem again. Thanks.
I hope i'm not pushing my luck, but i have one more problem...
Even though i can see unicast packets arriving, i can't catch the stream.
I've tried streming out using AVTransmit2 and JMStudio and i tried opening that stream in the remote machine using AVReceive2 and JMStudio without any sucess...
Do i need to do anything else?
Thank you for all your help.
I made a mistake and posted this in another topic a few days ago.
I'll just post it here also as a follow up.
I found out it i was doing wrong.
Everything works perfectly now.
Thanks for all your help... i would have never found this out for myself.
How did you do it?
Did you researched yourself?
