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Youtube "real-time buffer too full" and orange flashing Stream button
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Joined: 10/30/2023(UTC) Posts: 35  Location: Hull Thanks: 3 times
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It's been 3 weeks since updating to Windows 11 and I have had no further problems. The stream has been perfect every week on our 4G connection. I understand what Christian is saying about the undesirability of using 4G but unfortunately we have no option and it seems to work OK for us in our particular location, except for this problem which I suspect is probably not linked to the 4G connection as we've run this setup for 2 years without previous issues.
So I can see 2 possibilities -
1-There was something in a Windows 10 update which caused issues with RTMP streaming to youtube. Windows 11 doesn't have the problem.
2-Youtube found and fixed a problem.
I would be very interested to hear from others who were having this, as to whether their problems continue or not.
@bulent-atlas
@STATORADIO
are you still having the problems?
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Joined: 8/14/2023(UTC) Posts: 7 
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Just expand number of threads.  settings stream.PNG (19kb) downloaded 0 time(s).
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Joined: 10/21/2022(UTC) Posts: 12  Location: ankara Thanks: 5 times
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Originally Posted by: congoblue  It's been 3 weeks since updating to Windows 11 and I have had no further problems. The stream has been perfect every week on our 4G connection. I understand what Christian is saying about the undesirability of using 4G but unfortunately we have no option and it seems to work OK for us in our particular location, except for this problem which I suspect is probably not linked to the 4G connection as we've run this setup for 2 years without previous issues.
So I can see 2 possibilities -
1-There was something in a Windows 10 update which caused issues with RTMP streaming to youtube. Windows 11 doesn't have the problem.
2-Youtube found and fixed a problem.
I would be very interested to hear from others who were having this, as to whether their problems continue or not.
@bulent-atlas
@STATORADIO
Are you still having the problems? I was still having the same problem yesterday. I have the same problem not only on 1 computer but also on 3 computers. Tomorrow I will install Windows 11 on a computer and try it. I completed 5 days of broadcasts without any problems with 13 mbit upload with web presenter. But I cannot stream via vmix. https://www.youtube.com/...xaP0?si=JBuHrJHZFJIU1mzr
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 1 user thanked bulent_atlas for this useful post.
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Joined: 10/30/2023(UTC) Posts: 35 Location: Hull Thanks: 3 times
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Originally Posted by: mnmilos Just expand number of threads.
I tried this a few weeks ago, it made no difference to the problem for me.
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Joined: 2/4/2025(UTC) Posts: 4  Location: Tennessee
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I am having the same issue. I have confirmed that it is VMix. I have OBS running and VMix. I can stream 4k at 30mbps on OBS everytime i try to stream but on vmix it will rarely work. If i restart the computer sometimes i will get the full 30mbps with Vmix. Im verifying it through task manager. 90% of the time though i get orange buttons and it crashes to 3mbps with VMix. I have 2 monitors....i can put OBS on 1 and Vmix on the other....start streaming on OBS to YouTube 30mbps...works flawlessly. Stop stream on OBS....start stream on Vmix...orange buttons....only sending 3mbps of the 30.
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Joined: 1/13/2010(UTC) Posts: 5,182  Location: Gold Coast, Australia Was thanked: 4422 time(s) in 1550 post(s)
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Hi, Please contact us so we can see what might be different about the two streams. For example there may be slight differences in the encoding settings that might be shedding some light on what is tripping up YouTube for some people. Additionally 3rd party antivirus/security software is notorious for causing all sort of network issues and many may allow OBS but restrict vMix by default. These are the details to help us investigate further: 1. Email us at the address at the bottom of the contact page: https://www.vmix.com/contact-us.aspx2. Attach the OBS streaming log from a session that was working well. (Go to Help -> Log Files -> Show Log Files to find these) 3. Send a support report from vMix by going to Settings -> About and click Send Support Report. Preferably shortly after a failed stream. 4. Include your vMix registration key in the email so we can locate the support report. Regards, Martin vMix
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Joined: 2/4/2025(UTC) Posts: 4 Location: Tennessee
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Video evidence that Vmix is the issue. Using Vmix Version 28.0.0.36 x64 youtube videoWhats crazy is that if i change a random setting like go from hvec to h264....it will work. But if i stop stream and restart it with what worked...it wont work again.
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Rank: Newbie
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Joined: 2/4/2025(UTC) Posts: 4 Location: Tennessee
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I will contact you tomorrow. Ive been at this for 3 hours. Ive used Vmix over 10 years and ive done hundreds of events with it. Never had the issue before. Originally Posted by: admin Hi, Please contact us so we can see what might be different about the two streams. For example there may be slight differences in the encoding settings that might be shedding some light on what is tripping up YouTube for some people. Additionally 3rd party antivirus/security software is notorious for causing all sort of network issues and many may allow OBS but restrict vMix by default. These are the details to help us investigate further: 1. Email us at the address at the bottom of the contact page: https://www.vmix.com/contact-us.aspx2. Attach the OBS streaming log from a session that was working well. (Go to Help -> Log Files -> Show Log Files to find these) 3. Send a support report from vMix by going to Settings -> About and click Send Support Report. Preferably shortly after a failed stream. 4. Include your vMix registration key in the email so we can locate the support report. Regards, Martin vMix
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Joined: 10/30/2023(UTC) Posts: 35 Location: Hull Thanks: 3 times
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Originally Posted by: DeanJohnsonProductions I will contact you tomorrow. Ive been at this for 3 hours. Ive used Vmix over 10 years and ive done hundreds of events with it. Never had the issue before.
Windows 10? I was having this problem every stream (I started the thread). Since updating to Windows 11 (no change in hardware or network connections) every stream is perfect. I can't explain why, but if you are on W10 and able to update to W11 it would be worth a try. Of course there are many things could cause this problem so your issue may not be the same as mine.
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Joined: 2/16/2025(UTC) Posts: 1  Location: Monterrey
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I have the same issue starting around 2 weeks ago, I tought it was due to vmix 18 update, so I went back to v17 and still same problems, I updated graphics card driver, updated bios, updated ethernet driver, and today I installed a new ethernet pci card and the problem is the same, I'm streaming at 4k 30mbs to Yt and 1080p 8mbs to Fb and the problem is only on YT it starts around 1hours and 30 minutes streaming it starts to drop frames and video starts to loose more frames as minutes go by, only temporary solution is to stop and immediately start yt stream again.
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Joined: 10/21/2022(UTC) Posts: 12 Location: ankara Thanks: 5 times
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Joined: 2/16/2018(UTC)
Posts: 1
Location: South Africa
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We started experiencing this issue within the last 2 weeks. Available upload speed is 75 Mpbs (fibre connection). We are streaming at 1080p 8 Mbps H264 Baseline profile to YouTube.
What I noticed is that the issue is much more pronounced when using Main or High profiles as I tried those and then was forced back to Baseline. We are running an Intel 7800x with an nVidia 1050 Ti on Windows 10. We updated from vMix 24 to vMix 28 less than 3 weeks back, so it definitely started after the update, however, I'm not sure how the version would play a role so am sceptical it's related. We've been using vMix for streaming for the last 3 or 4 years, and this is the first time we have seen this issue. Let me know if any further information is required. It's starting to drive me up the wall at this point.
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