bad video quality and java issue #1829

tiiiecherle · 2022-03-08T16:15:41Z

Hey,

first of all thanks a lot for this project. We use it as an installation on our own archlinux server with all packages up-to-date.
We use the "*-bin" packages from the AUR for Jitsi.

I'm sorry I don't know exactly when but I think this issue started two Jitsi releases ago.

We did not change any Jitsi or component settings and the quality of the videos got really bad and blurry. Additionally I started seeing this in the logs.

Mar 8 14:35:49 archlinux jvb.sh[]: Exception in thread "Global IO poolpool-8-thread-2" java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;

I don't know if the issues are related in any way. Please let me know what else you would need to track down the issue. Perhaps it is already known.

Thanks a lot in advance.

The text was updated successfully, but these errors were encountered:

damencho · 2022-03-08T16:19:49Z

What is the java version you use to run jvb?

tiiiecherle · 2022-03-08T16:27:10Z

I tried with both of these which give me the same feedback and bad video quality.

local/jre-openjdk 17.0.3.u3-1
local/jre8-openjdk 8.332.u03-1

bgrozev · 2022-03-08T16:28:38Z

Can you post the full exception? Are you using sctp data channels?

damencho · 2022-03-08T16:34:18Z

We use the "*-bin" packages from the AUR for Jitsi.

Not sure what java was used to compile those, but you can try java 11 and see whether that changes anything.

tiiiecherle · 2022-03-08T16:40:32Z

@damencho Thanks, but this issue did not come up with a new java version but with some Jitsi update.

@bgrozev Does this help?

Mar  8 13:59:38 archlinux jvb.sh[162136]: Got sctp association state update: 1
Mar  8 13:59:38 archlinux jvb.sh[162136]: sctp is now up.  was ready? false
Mar  8 13:59:38 archlinux jvb.sh[162136]: Exception in thread "Global IO poolpool-8-thread-3" java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.protocol.OpenChannelMessage.parse(OpenChannelMessage.java:60)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.protocol.DataChannelProtocolMessageParser.parse(DataChannelProtocolMessageParser.java:55)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.DataChannelStack.onIncomingDataChannelPacket(DataChannelStack.java:59)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.Endpoint$DataChannelHandler.setDataChannelStack$lambda-4(Endpoint.kt:1129)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
Mar  8 13:59:38 archlinux jvb.sh[162136]: 	at java.lang.Thread.run(Thread.java:750)
Mar  8 13:59:38 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:38.674 SCHWERWIEGEND: [81] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:41 archlinux jvb.sh[162136]: Got sctp association state update: 1
Mar  8 13:59:41 archlinux jvb.sh[162136]: sctp is now up.  was ready? false
Mar  8 13:59:41 archlinux jvb.sh[162136]: Exception in thread "Global IO poolpool-8-thread-6" java.lang.NoSuchMethodError: java.nio.ByteBuffer.position(I)Ljava/nio/ByteBuffer;
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.protocol.OpenChannelMessage.parse(OpenChannelMessage.java:60)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.protocol.DataChannelProtocolMessageParser.parse(DataChannelProtocolMessageParser.java:55)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.datachannel.DataChannelStack.onIncomingDataChannelPacket(DataChannelStack.java:59)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at org.jitsi.videobridge.Endpoint$DataChannelHandler.setDataChannelStack$lambda-4(Endpoint.kt:1129)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
Mar  8 13:59:41 archlinux jvb.sh[162136]: 	at java.lang.Thread.run(Thread.java:750)
Mar  8 13:59:46 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:46.388 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=626292d4 gid=19730 stats_id=Gage-mEu [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:46 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:46.406 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:47 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:47.710 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:47 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:47.755 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=626292d4 gid=19730 stats_id=Gage-mEu [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:56 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:56.396 SCHWERWIEGEND: [93] [confId=d168c4cd82961606 epId=626292d4 gid=19730 stats_id=Gage-mEu [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:56 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:56.397 SCHWERWIEGEND: [93] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:57 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:57.701 SCHWERWIEGEND: [93] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:57 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:57.746 SCHWERWIEGEND: [93] [confId=d168c4cd82961606 epId=626292d4 gid=19730 stats_id=Gage-mEu [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:58 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:58.554 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0
Mar  8 13:59:58 archlinux jvb.sh[162136]: Jicofo 2022-03-08 13:59:58.556 SCHWERWIEGEND: [80] [confId=d168c4cd82961606 epId=9d2289ba gid=19730 stats_id=Philip-ifP [email protected]] DataChannelStack.onIncomingDataChannelPacket#81: Could not find data channel for sid 0

damencho · 2022-03-08T16:46:58Z

@damencho Thanks, but this issue did not come up with a new java version but with some Jitsi update.

Yes, we have seen a similar problem with jigasi. Compiled with java 11 and running with java8. I'm just saying you can quickly fix it by running java11.

Can you confirm what is the java version that was used to create the binary packages you use?

damencho · 2022-03-08T16:47:26Z

jitsi/jigasi@8d5b46b

bgrozev · 2022-03-08T16:53:55Z

@tiiiecherle The exception indeed explains the low quality. PR #1830 should fix it. You can also setup websockets instead of SCTP data channels, or run on jre9+ (I don't think we've tested 17 though).

tiiiecherle · 2022-03-08T17:03:38Z

@damencho and @bgrozev
Thank you both for the fast and really good help and support.

Indeed using jre11-openjdk seems to fix the issue for now.

Thanks also for implementing a fix so fast. I will stick with version 11 for now.

It would be nice if one of the next versions would be working with the latest java again.

Thanks again ;)

I think for now this can be closed.

tiiiecherle · 2022-03-08T17:05:59Z

One last question for this issue:
I'm using this switch for testing latest and lowest installed java version. Is that the correct way of doing it?
VIDEOBRIDGE_GC_TYPE=G1GC

tiiiecherle · 2022-03-08T17:17:14Z

@tiiiecherle The exception indeed explains the low quality. PR #1830 should fix it. You can also setup websockets instead of SCTP data channels, or run on jre9+ (I don't think we've tested 17 though).

What changes are necessary to switch to using websockets?

Is there a documentation about it somewhere?

Thanks

bgrozev · 2022-03-08T17:34:57Z

See here for web sockets: https://github.com/jitsi/jitsi-videobridge/blob/master/doc/web-sockets.md

bgrozev · 2022-03-08T17:36:10Z

One last question for this issue:
I'm using this switch for testing latest and lowest installed java version. Is that the correct way of doing it?
VIDEOBRIDGE_GC_TYPE=G1GC

I don't understand your question. You can use this flag to force G1, but the shell script sets the preferred version automaticall (https://github.com/jitsi/jitsi-videobridge/blob/master/jvb/resources/jvb.sh)

tiiiecherle · 2022-03-08T17:51:49Z

@bgrozev

1
Thanks for the web socket link. I don't know when I will have time to try, but I keep it in mind.

2
Now I am a little confused about the java versions. I don't know where but I read somewhere that VIDEOBRIDGE_GC_TYPE=G1GC this sets up jvb to use the latest java version (in my case 17) instead of the default one. If this is not the case then I never tried version 17 and I can not tell yet if the issue would happen on version 17.

Edit: added rephrased question below.

tiiiecherle · 2022-03-08T19:22:20Z

It seems that JAVA_VERSION= is just used in the script to detect which value to use for VIDEOBRIDGE_GC_TYPE= parameter, right?

So I rephrase the question and sorry for the confusion.

What is the recommended way for testing another java version that is not the system default?

bgrozev · 2022-03-08T20:27:20Z

Now I am a little confused about the java versions. I don't know where but I read somewhere that VIDEOBRIDGE_GC_TYPE=G1GC this sets up jvb to use the latest java version (in my case 17) instead of the default one.

That's incorrect (just confirming what you already found out).

What is the recommended way for testing another java version that is not the system default?

It's best to change the system's default java.

tiiiecherle · 2022-03-09T13:50:17Z

@bgrozev
Thanks, for testing I changed the default system java to version 17 and the issue is not present. Everything seems to work. Thanks again. I guess now this can be closed.

rasos · 2022-06-14T07:16:02Z

JVBs do not run anymore on JRE8. We get:

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/jitsi/videobridge/MainKt has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

since upgrading to 2.1-665 and with 2.1-681. We thought that #1830 still allows using JRE8.

Sure, JVBs work well with JRE11, however we are running some bridges on BigBlueButton servers (to share resources and save energy costs) which still support JRE8 only (BBB 2.4).

damencho · 2022-06-14T08:45:32Z

We migrated all jitsi components to support java11+. Java8 is no longer an option in any of the components.

saghul · 2022-06-14T09:31:40Z

The Debian package shouldn't install with JDK8 even.

albig mentioned this issue Apr 4, 2022

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bad video quality and java issue #1829

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