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lestra  
#1 Posted : Tuesday, February 4, 2020 3:03:34 AM(UTC)
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Any chance vmix team to build something like Video Call with SRT protocol(instead of WebRTC), in the future?
mjgraves  
#2 Posted : Tuesday, February 4, 2020 8:07:45 AM(UTC)
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I expect you can already do this with two instances of vMix.

If by "vMix Call" you mean allowing someone to use a browser to connect your vMix production, browsers don't support SRT.

Technically Zoom does use WebRTC, but it take advantage of many aspects of WebRTC. It's basically a non-standard implementation, using webasm to do some unique things.

Conceptually, someone might be able to craft a service that acts like WebRTC but includes SRT-compatibility. Like an codec implemented in entirely Javascript, which has been done.

That said, don't expect it to work on a mobile phone. It would be too resource intensive.
elvis55  
#3 Posted : Tuesday, February 4, 2020 9:38:18 AM(UTC)
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My setup for reporters with Android smartphone to Public IP address to moderator vMix PC.
SRT Player for Android and Larix Broadcaster

Public IP address. How to search setup on google.

Via the Internet with: Public IP address, -zb. ddns.net.


Open in modem / router port UDP - example: 5000 - 5010

SRT Player for Android

In vMix PC: Settings - Outputs / NDI / SRT - SRT Type: Listener-Port: Number - OK
For example port: 5000

In SRT Player (Android) green+ - Enter: srt: // (Public ip of the vMix Pc): Port number.
For example: srt://Public ip:5000

Larix Broadcaster

In the Larix connection:
For example: srt://Public ip:5001

In vMix input - Stream / SRT - Listener - Port 5001 - OK

Open vMix and go to Settings -> Outputs/NDI/SRT -> Then next to Output 1.
Next click the cog icon to the right of this and select BusA from the Audio Channels dropdown menu and Setup SRT. This will enable the NDI/SRT output from vMix with BusA audio included. Using Bus A audio means we can control what audio is sent back to the SRT-SLDP Player - to avoid any audio feedback.

Audio Bus A

Next go to Settings -> Audio Outputs -> and set the Bus A option to Enabled.
Audio Outputs

Go to the Audio Mixer to the right hand side of vMix and adjust the following:
Your own microphone audio input in vMix
Click the cog icon to open its settings. Then next to the headphones icon at the bottom left of this window, turn the headphones control completely off by dragging it down with the mouse.
All other audio inputs you wish to send to the SRT-SLDP Player - except for the Larix SRT Input
Activate the A bus button on all other audio inputs you want your SRT - SLDP Player to hear, such as your own microphone. Make sure you do not activate the A bus button on the Larix SRT Input so the caller doesn't hear themselves.

In Smartphone start the SRT Player for Android. Android N quick-tip: How to activate split-screen multitasking mode.
Split-Screen

Start Larix Broadcaster

Greeting
lestra  
#4 Posted : Tuesday, February 4, 2020 5:56:39 PM(UTC)
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I prefer this scenario: One vmix instance and for example 3 reporters with smartphones comes to vmix via srt.

Now Elvis55 your method looks like solution I am looking for. I will try it and will come back with results. Thank you so much!
lestra  
#5 Posted : Tuesday, February 4, 2020 6:57:18 PM(UTC)
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This part I can't get to work:


SRT Player for Android

In vMix PC: Settings - Outputs / NDI / SRT - SRT Type: Listener-Port: Number - OK
For example port: 5000

In SRT Player (Android) green+ - Enter: srt: // (Public ip of the vMix Pc): Port number.
For example: srt://Public ip:5000


In srt player settings which public ip to enter? Public ip of main comp where vmix working? Or at the phone side?
elvis55  
#6 Posted : Tuesday, February 4, 2020 7:08:16 PM(UTC)
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Public ip of main comp where vmix working.
lestra  
#7 Posted : Tuesday, February 4, 2020 7:22:43 PM(UTC)
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Whatever I try I get Can't connect to server on player app.

I already opened port on modem and Larix Broadcaster works nicely.

On the vmix side to use its own ip or ip of the phone side?
elvis55  
#8 Posted : Tuesday, February 4, 2020 7:42:48 PM(UTC)
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lestra  
#9 Posted : Wednesday, February 5, 2020 2:40:05 AM(UTC)
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No luck with sending srt video out from vmix to phone SLDP Player. Don't know what I am doing wrong.
elvis55  
#10 Posted : Wednesday, February 5, 2020 3:04:13 AM(UTC)
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SRT playback support in SLDP Player

SRT Stream

In SRT Player (Android ) green+ - Enter: srt: // (public ip of the vMix Pc): Port number.
Port must be on UDP, not TCP

Set SRT Latency

SRT maxbw (bytes/sec) for example: 100000 bytes = 1 Megabyte



Otherwise, test it once in the local network.
Instructions here.
lestra  
#11 Posted : Wednesday, February 5, 2020 7:29:28 AM(UTC)
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It works! Thank you so much Elvis55!!!
lestra  
#12 Posted : Wednesday, February 5, 2020 8:13:18 PM(UTC)
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For everyone who wants to know, SRT is amazing!! Nice video stream without any glitch in both directions!


I have another quick question: I would like to stream out video file (not live camera/mic) from android phone using SRT protocol. It would be video recorded on phone then edited in PowerDirector app.

Is there app for this task?
elvis55  
#13 Posted : Wednesday, February 5, 2020 8:59:28 PM(UTC)
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Hallo,

Larix Screencaster

Works also with public IP address. Broadcast like Larix Broadcaster. Also audio transmission.


Gruss
lestra  
#14 Posted : Wednesday, February 5, 2020 9:53:55 PM(UTC)
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Does Larix Screencaster stream out screen only or it can play/encode/stream out video file?
elvis55  
#15 Posted : Wednesday, February 5, 2020 10:06:28 PM(UTC)
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Testing, costs nothing !!!!
lestra  
#16 Posted : Wednesday, February 5, 2020 10:30:54 PM(UTC)
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So I tested it an find that it can not stream out from video file moreover it can not capture audio from apps and on my configuration it works extremely choppy. Thanks anyway Elvis55.

lestra  
#17 Posted : Wednesday, February 5, 2020 10:56:51 PM(UTC)
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Elvis55 I appreciate your help so much. There is just one more question: In multiwindow mode on phone, some apps works in split screen and some does not. Unfortunately Larix Broadcaster and SLDP Player wont work. Do you have any solution for this?

I promise no more questions.

Thank you so much!
elvis55  
#18 Posted : Wednesday, February 5, 2020 11:46:04 PM(UTC)
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Hallo

In my smartphone - Huawei Mate 10 lite - Larix Broadcaster and SLDP Player work optimally in a split screen. First start SLDP Player, share screen and then start Larix Broadcaster. Unfortunately I cannot give another answer. Search in Google Screen split for your smartphone.

How to use split-screen on Android ?

Gruss
lestra  
#19 Posted : Thursday, February 6, 2020 12:47:23 AM(UTC)
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Thank you Elvis55, I will check it again. In the meantime I found out another solution: In Larix Broadcaster enable Developer Options and Foreground Service. Now Larix Broadcaster works in background while SLDP Player works in foreground.
elvis55  
#20 Posted : Friday, February 7, 2020 6:43:45 AM(UTC)
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Larix Broadcaster - SLDP Player SRT Youtube

Short Film
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