logo

Live Production Software Forums


Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Options
Go to last post Go to first unread
bpscarbrough  
#1 Posted : Monday, October 7, 2024 7:19:41 AM(UTC)
bpscarbrough

Rank: Member

Groups: Registered
Joined: 1/11/2024(UTC)
Posts: 17
United States
Location: Perkinston

Thanks: 3 times
Was thanked: 1 time(s) in 1 post(s)
I stream a church service to FaceBook and YouTube using vMix 27.0.0.85. We use a 1080/60fps stream with FB using H.264 and YT using HEVC. The picture quality is very good, but now I've started experiencing audio drops during the stream. It's not heard inhouse nor in the monitor earphones on the vMix laptop. Laptop is running NVIDIA 3070 GPU, 32 gb Ram, 1 TB ssd, gigabit ethernet with a full gig fiber connection to the internet. Laptop is not under any load, render times are less than 10 ms. Streams are solid red. I am using 2 PTZOptics 20x NDI cameras.

As a test, I've switched the YT stream back to H.264 with 8 mbps bitrate. FB is 4.5 mbps bitrate.

The audio seems to drop or pause in 1 sec increments. Works, pauses, works, pauses, etc. Might clear up for a bit then start again.

I'm beginning to think using HEVC is just not stable enough. I only did this to get a better quality image with less data, but not sure it's worth it.

Any suggestions?
bpscarbrough  
#2 Posted : Monday, October 7, 2024 8:48:35 AM(UTC)
bpscarbrough

Rank: Member

Groups: Registered
Joined: 1/11/2024(UTC)
Posts: 17
United States
Location: Perkinston

Thanks: 3 times
Was thanked: 1 time(s) in 1 post(s)
While I did switch back to H.264 (video quality went backward quite a bit), but I think the audio problem was fixed by doing this.

https://www.vmix.com/kno...io-quality-in-windows-11

I am running windows 11 pro.

mavik  
#3 Posted : Monday, October 7, 2024 6:14:40 PM(UTC)
mavik

Rank: Advanced Member

Groups: Registered
Joined: 4/23/2017(UTC)
Posts: 1,227
Man
Location: Germany

Thanks: 3 times
Was thanked: 168 time(s) in 150 post(s)
If I'm not wrong YT supports AV1 as one of the first platforms. You can try that instead of H.265.
Generally I would recommend only one type of encoding. If you stream to different platforms this could mean that you stream in the lowest common factor but if your system is powerful enough and bandwidth is high enough you can do multiple stream in different encodes.
bpscarbrough  
#4 Posted : Monday, October 7, 2024 11:50:22 PM(UTC)
bpscarbrough

Rank: Member

Groups: Registered
Joined: 1/11/2024(UTC)
Posts: 17
United States
Location: Perkinston

Thanks: 3 times
Was thanked: 1 time(s) in 1 post(s)
I would try AV1, but I don't have a 4000 series NVIDIA card. I'm running a Dell Alienware laptop with 3070 NVIDIA card. It's not really even loaded with 2 cameras though. HEVC was as high as vMIX recommended. It seems the audio problems were caused by various settings referenced in that link I posted.

I intend to do more testing to see if everything is resolved.
Darkwood3r  
#5 Posted : Wednesday, November 20, 2024 7:55:30 AM(UTC)
Darkwood3r

Rank: Newbie

Groups: Registered
Joined: 4/16/2024(UTC)
Posts: 2

Hi there, have you found any solution? I am experiencing the same - audio is dropping on Youtube, but not in the headphones. H264 did not help :/
bpscarbrough  
#6 Posted : Wednesday, November 20, 2024 12:04:53 PM(UTC)
bpscarbrough

Rank: Member

Groups: Registered
Joined: 1/11/2024(UTC)
Posts: 17
United States
Location: Perkinston

Thanks: 3 times
Was thanked: 1 time(s) in 1 post(s)
There’s an article in knowledgebase about sound settings on the pc. Turn off everything essentially.
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.