MonoTinyServer and muti-video sync issues in Vmix

Jason Dupree

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Jul 29, 2021, 10:07:31 AM7/29/21

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Hi, everyone. I just found Mona Server yesterday and am ecstatic about the consistency I'm getting versus NGINX or even SRT.

I've posted this in the OBS forums too and got a response from Thomas, but figured I'd put it here in case anyone else has seen the issue.

I've tested by sending video from three phones with Larix Broadcaster to MonaTiny but I'm finding the feeds are not synced. Are there some config settings that can help with this? I'm using VMix. I just trying looking at the streams through VLC (with Vmix closed) and when I pull up the stream I can see it makes the connection in Mona Server, but the video never shows up.

MonaServer

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Jul 29, 2021, 10:10:48 AM7/29/21

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Hi Jason!

Thanks to post here, it's more convenient for us.

Can you share the logs of MonaServer? And also the parameters you're using with Larix Broadcaster?

Jason Dupree

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Jul 29, 2021, 10:35:42 AM7/29/21

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Thanks! The logs are attached and my settings are as follows on all phones:

The connection settings are the RTMP url and Mode is Audio+Video.

The video settings are 1280x720, 30FPS, Background streaming on, Bitrate at 1500, format is H.264 (should I be using HEVC?), and ABS is set to Logmarithic descend.

Any other pertinent settings you need?

0.log

MonaServer

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Jul 29, 2021, 11:47:05 AM7/29/21

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This is strange, and with OBS you were able to see the video?

You can try to disable audio and lower the bitrate, I am not sure it will help but it's worth it to give it a try

Also do you have some logs on VLC side?

Jason Dupree

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Jul 29, 2021, 12:06:20 PM7/29/21

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Very interesting, using just Video everything is in Sync in vmix, but as soon as I turn on audio too it's not.

VLC I was just being stupid with the url. All videos are coming into VLC well and in sync with no issues.

Jason Dupree

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Jul 29, 2021, 12:25:36 PM7/29/21

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Awesome, I played around with the buffer amount in Vmix, it defaulted to 300 and I changed it to 1000 and this fixed the sync issue. Thanks for all of the help! I'll play around with the buffer amount, but the delay from camera to vmix is only about 2-3 seconds, even over cell signal, so not bad.

MonaServer

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Jul 30, 2021, 1:53:13 AM7/30/21

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Good job Jason! Thanks for reporting your results

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