logo

Live Production Software Forums

www.vmix.com

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

Notification

Icon
Error
Audio delay compensation for plugins
Options
Go to last post Go to first unread
Previous Topic Next Topic
soham  
#1 Posted : Friday, August 7, 2020 4:18:53 AM(UTC)
soham

Rank: Newbie

Groups: Registered
Joined: 8/7/2020(UTC)
Posts: 2
U.S. Minor Islands
Location: portland
For my first time, I'm using a VST audio plugin on an input channel. I'm used to using DAWs (i.e., Logic Pro X) which has automatic delay compensation. VMIX does not appear to do any automatic compensation, is that correct?

My input channel is a sync'd audio/video signal from and HDMI source, and as soon as I inserted the (noise reduction) plugin to the audio, the audio and video were no longer in sync. I solved it by adding -500ms (in this case) of delay. it's a bit confusing to me, since I would have thought I should add positive delay to the video signal... but it worked.

Just wanted to get some feedback if this is expected or if there's an easier way? This method, the sync is visual, there doesn't appear to be a tool to calculate the plugin delay for you.

Thanks!
Back to top

Wanna join the discussion?! Login to your vMix Forums forum account, or Register a new forum account.
Back to top  
pba  
#2 Posted : Friday, August 7, 2020 8:13:14 AM(UTC)
pba

Rank: Advanced Member

Groups: Registered
Joined: 10/14/2015(UTC)
Posts: 147
Location: Hungary

Thanks: 38 times
Was thanked: 24 time(s) in 20 post(s)
I'm also interested about this, I have a same "problem". Anyway if I remember well, the positive delay for the video is not working with the IP based inputs... only with the HDMI/HDSDI...
Back to top
admin  
#3 Posted : Friday, August 7, 2020 3:45:31 PM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 5,208
Man
Location: Gold Coast, Australia

Was thanked: 4288 time(s) in 1520 post(s)
Hi,

As vMix is Live, delay compensation is not possible, so for this reason a plugin with no or little latency is required.
(Most plugins are no or very little latency in our tests, for what its worth).

A negative delay on a live input will also have no effect, so not sure why you are seeing a difference there.

Regards,

Martin
vMix
Back to top
WWW BLOG
thanks 1 user thanked admin for this useful post.
eduardocfs on 8/8/2020(UTC)
soham  
#4 Posted : Saturday, August 8, 2020 4:41:37 AM(UTC)
soham

Rank: Newbie

Groups: Registered
Joined: 8/7/2020(UTC)
Posts: 2
U.S. Minor Islands
Location: portland
Hi Martin,
thanks for your response. This is definitely not my experience. a negative delay does improve the sync in my case.
fyi, I'm using a real time noise filter from iztope and agree that it really should be a real time filter, but sure enough... it's got nearly 500ms of delay. All is good for stream/record/export of a live session when I apply about -500ms of delay on the audio channel. and if I do the opposite (+ delay) the sync gets further out. I'm glad it's working, still confused as to now why it works though.
Back to top
Users browsing this topic
Guest
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 0.097 seconds.