logo

Live Production Software Forums

www.vmix.com

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

Notification

Icon
Error
Video Latency - High Video Latency but perfect audio
Options
Go to last post Go to first unread
Previous Topic Next Topic
millst  
#1 Posted : Friday, October 19, 2018 10:23:24 AM(UTC)
millst

Rank: Member

Groups: Registered
Joined: 4/28/2018(UTC)
Posts: 25
Location: NZ

Was thanked: 7 time(s) in 3 post(s)
Im in the middle of a 24 hour broadcast using vmix call to link two sites.
I have perfect audio with very low latency.
I have only 6fps of video getting to the receiving end and the video is increasingly being delayed and getting further and further behind the video. Its now up to about 10 minutes behind the audio.

I've got 100mbps dedicated at each end and this is driving me around the bend.
I've tried rebooting, different machines and restarting vmix all to no avail.

Any help would be much appreciated.
Back to top
WWW

Wanna join the discussion?! Login to your vMix Forums forum account, or Register a new forum account.
Back to top  
millst  
#2 Posted : Friday, October 19, 2018 11:35:02 AM(UTC)
millst

Rank: Member

Groups: Registered
Joined: 4/28/2018(UTC)
Posts: 25
Location: NZ

Was thanked: 7 time(s) in 3 post(s)
interestingly, the source IP address for audio is different from the source ip address for audio when I look at the stats on the receiving machine.
audio is 13..73.202.12
video is 122.56.76.167

what would cause this?
it looks like audio and video are taking different paths.
Back to top
WWW
millst  
#3 Posted : Friday, October 19, 2018 11:57:52 AM(UTC)
millst

Rank: Member

Groups: Registered
Joined: 4/28/2018(UTC)
Posts: 25
Location: NZ

Was thanked: 7 time(s) in 3 post(s)
more information, after several resets of the connection, I've got both audio and video coming from the same source.
the video buffer is continuing to climb though and I'm only getting 6fps while audio is fine.
There is TRUCKLOADS of bandwidth between the two sites.
Back to top
WWW
admin  
#4 Posted : Friday, October 19, 2018 12:10:51 PM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 5,207
Man
Location: Gold Coast, Australia

Was thanked: 4285 time(s) in 1519 post(s)
Hi,

Delayed video at low FPS indicates the computer is unable to decode the video fast enough.
What is the video resolution you are using in vMix Call and what sort of CPU and graphics is installed on the system?

Regards,

Martin
vMix
Back to top
WWW BLOG
millst  
#5 Posted : Friday, October 19, 2018 12:34:17 PM(UTC)
millst

Rank: Member

Groups: Registered
Joined: 4/28/2018(UTC)
Posts: 25
Location: NZ

Was thanked: 7 time(s) in 3 post(s)
Sending machine is AMD 1950X with 32Gb Ram with 1080TI only one NDI source and its sending it via vmix call, 1% cpu load.

Receiving machine is an Intel Xeon 1240 with 8Gb Ram and GTX710.
CPU load on receiving machine is 2%, total 7%.
All it is doing is receiving a single VMIX Call, no other sources and sending it to FullScreen and YouTube.
Back to top
WWW
millst  
#6 Posted : Friday, October 19, 2018 12:37:21 PM(UTC)
millst

Rank: Member

Groups: Registered
Joined: 4/28/2018(UTC)
Posts: 25
Location: NZ

Was thanked: 7 time(s) in 3 post(s)
ahhh, may have got it, the GPU had some process on it running which was consuming GPU. when I killed it things started catching up.
Back to top
WWW
Users browsing this topic
Guest (2)
Similar Topics
Vmix call excessive video latency (vMix Call)
by andrewdavis 6/26/2020 5:32:22 AM(UTC)
Multi-cam video latency with long run cat 6 on one cam (General Discussion)
by bluesgeek 9/15/2017 6:54:54 AM(UTC)
best hardware for low video latency (Hardware Compatibility)
by radamo 4/16/2014 5:02:31 AM(UTC)
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.

Privacy Policy | Powered by YAF.NET | YAF.NET © 2003-2024, Yet Another Forum.NET
This page was generated in 0.096 seconds.