Question / Help Double echo with multiple participants with streaming from Skype.

Ylifl

New Member
Hello!

I've seen multiple threads here that ask a similar question but didn't find an answer to this exact question.

I'm trying to stream 2-3 people from Skype to Youtube, whilst not being on the stream myself but the call would come through me. With just one person - no problem, but as soon as I add another caller an echo comes up on Youtube. Everybody was using headphones as was I.

I know that Skype doesn't offer multiple audio channels so can anyone recommend something for this problem? Is there a third party application that would let me separate these channels somehow or is there a different solution?
 

Narcogen

Active Member
I believe that each NDI feed from Skype includes: one participants' video, and ALL participants audio.

You're expected to either only use one at a time, or if you use multiple sources simultaneously, mute all but one.

This is what causes people lip sync issues over and above any usual such problems with Skype, because there's no guarantee that the NDI feed you choose will have its audio synced to the others' video.
 

bikeshop_phil

New Member
If it's true that each video source contains the audio of every participant that's a major bummer. Why is it that when I think I've found the ideal solution there's always a MAJOR deal breaker?
 

Ylifl

New Member
I found kind of a solution. I use one of the skype sources as audio for all and then screen grab the rest.
Works, but it's not perfect.
 

raffadorio

New Member
I've done the same as you, @Ylifl , but the audio got off sync in a question of seconds (less than a minute).

I've put four persons on skype + ndi and obs... but i had to put all down and - against my will - go to discord.

i hope anyone got a sollution, cause i'm in love with ndi, but hating the off sync (audio-vídeo) issue.

Any news, @bikeshop_phil @Narcogen and @Ylifl , or anyone?
 

TFE

Member
How do you input audio sources into OBS? I use an older iMac as the streaming computer running OBS. Video inputs from three webcams, a MacBook Pro running Keynote, and a second MBP running, normally, Skype with one or more guests, or, sometimes Zoom, or sometimes both Skype and Zoom at the same time. I use a BMD capture card for the video from the Keynote MBP, and NDI for the Skype video stream(s) from the second MBP, and another NDI video stream using the NewTek Scan Converter to capture the screen of that MBP for Zoom. As to audio, I use an audio mixer (Behringer 1204USB, nothing fancy) that takes inputs from studio mics, audio from the Keynote MBP, and three channels of audio from the MBP running Skype and/or Zoom — one channel from the headphone output for normal laptop audio, one channel via a USB interface for the combined Skype audio, and one channel via another USB interface for Zoom audio (with the Skype and Zoom apps set to output audio to those interfaces, respectively). Mixer outputs the program audio via USB to the iMac (and is the only audio input to OBS), and the mixer outputs the program audio MINUS THE SKYPE CHANNEL (via the FX bus out) back to the MBP running Skype via an audio interface. The mix-minus completely eliminates any Skype echo since they hear each other via the Skype app, but not via the audio I am sending back to them as the program out. We've done 300+ live shows with this or a similar set-up, every Tuesday and Friday. Watch last Friday's show here: https://www.facebook.com/watch/live/?v=2420540734916046. By the way, I produce, direct (switch) and host the shows.
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