logo

Live Production Software Forums

www.vmix.com

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

Notification

Icon
Error
How is this possible?
Options
Go to last post Go to first unread
Previous Topic Next Topic
madness  
#1 Posted : Monday, December 19, 2016 3:59:34 PM(UTC)
madness

Rank: Advanced Member

Groups: Registered
Joined: 4/16/2013(UTC)
Posts: 406
Man
Location: Iowa

Thanks: 281 times
Was thanked: 32 time(s) in 29 post(s)
I've been doing some lag testing in vMix using a c270 as my baseline with near zero latency detected. I added my Amcrest IP2M-841B 1080p PTZ camera as a streaming input. This camera does not appear as an NDI camera until it has been added as an actual input. I then added the camera again, as an NDI input. I did a simple clap test, recording the output, and importing that into Vegas pro, and adding timecode to mark the clap.

The result is in this video...
https://drive.google.com...T1h4bTA/view?usp=sharing

So how is it possible for the NDI of the RTSP input to respond quicker than that same RTSP input? This means I need to add an additional input to increase the speed.
Also, why is that same RTSP input slower than the same RTSP feed in firefox? It looks to me like there is some kind of delay in the vMix RTSP feed that is bypassed when using NDI.
Back to top

Wanna join the discussion?! Login to your vMix Forums forum account, or Register a new forum account.
Back to top  
madness  
#2 Posted : Monday, December 19, 2016 4:11:16 PM(UTC)
madness

Rank: Advanced Member

Groups: Registered
Joined: 4/16/2013(UTC)
Posts: 406
Man
Location: Iowa

Thanks: 281 times
Was thanked: 32 time(s) in 29 post(s)
Just did another test with the vMix NDI along side my Firefox window. These are within 1 frame of each other when using a light as the trigger source. The light comes on in Firefox, and in one frame, comes on in vMix NDI.

Although this is much more responsive, I am still curious as to why the vMix stream is behind the browser stream.
Back to top
stigaard  
#3 Posted : Monday, December 19, 2016 5:47:28 PM(UTC)
stigaard

Rank: Advanced Member

Groups: Registered
Joined: 5/20/2015(UTC)
Posts: 493
Man
Denmark
Location: Copenhagen, Denmark

Thanks: 389 times
Was thanked: 100 time(s) in 79 post(s)
You mention a RTSP stream in Firefox, and one in vMix. Are the stream in Firefox from a Admin panel or something like that? Perhaps it has a lower resolution, and therefore has a lower delay.

Cheers

Jens Stigaard
Back to top
WWW BLOG
madness  
#4 Posted : Monday, December 19, 2016 8:53:51 PM(UTC)
madness

Rank: Advanced Member

Groups: Registered
Joined: 4/16/2013(UTC)
Posts: 406
Man
Location: Iowa

Thanks: 281 times
Was thanked: 32 time(s) in 29 post(s)
It is the admin panel in Firefox, and is displaying the primary 1080 stream in both
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 0.075 seconds.