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    Inconsistent resolution issues using Screen Capture Alpha>Syphon Stage Output>Syphon Virtual Webcam

    Troubleshooting and Bug Reports
    syphon virtual webcam skype ndi screen capture
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    • Kathmandale
      Kathmandale last edited by Kathmandale

      Hi,

      could the problem be down to the bandwidth of your performers internet connection? On a recent project where we used Skype we found Skype adjusts the resolution of callers video based on the speed of each connection. This was also reflected in the NDI feeds coming out of Skype which would be different for the different performers and would often change when disconnecting/reconnecting.

      My first test would be an internet speed test under normal operating conditions to see if there's much difference between the two performers connections. The upload speed is especially important. I've always used Ookla for this, I'm sure others are available.

      We found that for some performers they got better upload speeds by tethering their mobiles than they did through their home internet. Obviously, depending on your mobile package doing this can cost anything in the range from 'free' to 'hugely expensive' but it's worth a try.

      2014 MBP Mojave 10.14.6 OS with 16GB, 2.5Ghz i7 quad core, Intel Iris Pro 1536 & Geforce GT 750m 2GB - Izzy 3.0.8
      Gigabyte Brix Windows 10 with 32GB, i7-6700 quad core, 4GB GeForce GTX 950 - Izzy 3.0.8
      Based in Manchester, UK.

      1 Reply Last reply Reply Quote 4
      • Bodo
        Bodo @andielloyd last edited by

        @andielloyd

        I just did a lot of research in order to get good reliable video quality over internet and so far I understood the way to go is a SRT connection (peer to peer) - bird dog cloud is interesting I guess:

        https://bird-dog.tv/product/bi...

        also srt connection from vmix to vmix ....seams to work

        MacPro Late 2013 OSX 10.13., Izzy 2.6.1

        http://studio6.berlin

        Kathmandale 1 Reply Last reply Reply Quote 3
        • Kathmandale
          Kathmandale @Bodo last edited by

          @bodo looks great, pricy though... 

          2014 MBP Mojave 10.14.6 OS with 16GB, 2.5Ghz i7 quad core, Intel Iris Pro 1536 & Geforce GT 750m 2GB - Izzy 3.0.8
          Gigabyte Brix Windows 10 with 32GB, i7-6700 quad core, 4GB GeForce GTX 950 - Izzy 3.0.8
          Based in Manchester, UK.

          1 Reply Last reply Reply Quote 0
          • peuclid
            peuclid @andielloyd last edited by

            @andielloyd

            I second what @Kathmandale said about bandwidth. What I found even more important is that everyone should be connected via ethernet to their routers. Wifi can drop packets without much notice normally. The lower resolution could be a result of Skype compensating for lost packets. At the start of rehearsals for every show, we get a screenshot of every actor's speedtest.net (ookla) results and we buy them an ethernet cable and adapter for their machine (if they need one). Sometimes they need to string the cable through a hallway, down some stairs and across a few rooms, so 50' and sometimes 100' cables are pretty normal. Actually, if they are stringing it a long way, all the more reason they need it since that usually means they are far from their wifi access point. It's a small investment that can save lots of grief during a show.

            Good luck with the show!

            Bernie

            Bernie Bernstein
            MacBook Pro (13-inch M1 2020) 16GB, MacOS Monterey- Izzy 3.1.1 (ARM)
            Based in Newton, MA USA

            1 Reply Last reply Reply Quote 4
            • Woland
              Woland Tech Staff @andielloyd last edited by

              @andielloyd

              Yeah my list would be:

              1. Do a speed test for each performer
              2. Get each performer and technician a wired connection to their router (and make sure they're using it properly with wifi disabled)
              3. Have a look around in the Skype settings to make sure that nobody has opted to send or receive video on any settings lower than the maximum. 
              4. Have a look at OBS Ninja, as it might be a better solution for remote desktop capture than Screen Capture Plugin > Isadora > Virtual Webcam > Skype > NDI > Isadora > OBS: https://obs.ninja/

              TroikaTronix Technical Support
              New Support Ticket: https://support.troikatronix.com/support/tickets/new
              Support Policy: https://support.troikatronix.com/support/solutions/articles/13000064762
              Add-Ons: https://troikatronix.com/add-ons/ & https://troikatronix.com/add-ons/?u=woland
              Professional Services: https://support.troikatronix.com/support/solutions/articles/13000109444

              | Isadora Version: all of them | Mac Pro (Late 2013), macOS 10.14.6, 3.5GHz 6-core, 1TB SSD, 64GB RAM, Dual AMD FirePro D700s |

              1 Reply Last reply Reply Quote 4
              • Fred
                Fred @andielloyd last edited by

                @andielloyd Skype has a particularly annoying bandwidth threshold to cut to a lower resolution and no way to influence it. I'm guessing this is the issue.

                Take a look at OBS ninja for free peer to peer video.

                http://www.fredrodrigues.net/
                https://github.com/fred-dev
                OSX 13.6.4 (22G513) MBP 2019 16" 2.3 GHz 8-Core i9, Radeon Pro 5500M 8 GB, 32g RAM
                Windows 10 7700K, GTX 1080ti, 32g RAM, 2tb raided SSD

                andielloyd 1 Reply Last reply Reply Quote 2
                • andielloyd
                  andielloyd @Fred last edited by

                  @fred @Woland @peuclid @Bodo @Kathmandale @liminal_andy 

                  Thank you all so much for your awesome feedback. I had originally looked into OBS.ninja but had a tough time setting it up on my Macbook - I figured it may not be ideal to have the actors go through but based on your advice, I will troubleshoot it more for future projects. 

                  I think how I plan to go forward is to 

                  A) ensure that all actors are on a wired internet connection in their homes

                  B) upgrade the actor with the poor resolution to a Mac Pro in the hopes of giving her a CPU boost

                  C) "have a look around in the Skype settings to make sure that nobody has opted to send or receive video on any settings lower than the maximum" 

                  @liminal_andy - love your suggestion about simplifying the setup using Syphoner instead, but I can't figure out how to capture a full display using Syphoner - only windows. Does anyone know a solution for this?

                  Huge thanks for everyone's support thus far - P2P will be on my horizons in the future. 

                  Isadora User since 2017 | Version 2.6.1 onwards

                  :: Macbook Pro (2021, 16-Inch) Apple M1 Max, 64GB Memory, 1TB Storage

                  liminal_andy Woland 2 Replies Last reply Reply Quote 2
                  • liminal_andy
                    liminal_andy @andielloyd last edited by

                    @andielloyd While I have not used this before I do see this screen capture to syphon utility from a bit of googling, maybe that will help?


                    Others have mentioned a wide variety of great alternative CDN ideas. We use BDC at Liminal quite often, but the endpoints are Windows-only and there is quite a fee to manage. We have our own NDI over IP solution that we use, but OBS ninja is another good idea potentially. If you do venture away from Skype, you will be well-supported with other ideas!

                    Andy Carluccio
                    Zoom Video Communications, Inc.
                    www.liminalet.com

                    [R9 3900X, RTX 2080, 64GB DDR4 3600, Win 10, Izzy 3.0.8]
                    [...also a bunch of hackintoshes...]

                    1 Reply Last reply Reply Quote 1
                    • Woland
                      Woland Tech Staff @andielloyd last edited by

                      @andielloyd said:

                      B) upgrade the actor with the poor resolution to a Mac Pro in the hopes of giving her a CPU boost

                       Honestly if you're purchasing a show computer for a performer and looking for high power, low cost, you're probably much better off getting them a Windows 10 machine.

                      TroikaTronix Technical Support
                      New Support Ticket: https://support.troikatronix.com/support/tickets/new
                      Support Policy: https://support.troikatronix.com/support/solutions/articles/13000064762
                      Add-Ons: https://troikatronix.com/add-ons/ & https://troikatronix.com/add-ons/?u=woland
                      Professional Services: https://support.troikatronix.com/support/solutions/articles/13000109444

                      | Isadora Version: all of them | Mac Pro (Late 2013), macOS 10.14.6, 3.5GHz 6-core, 1TB SSD, 64GB RAM, Dual AMD FirePro D700s |

                      andielloyd 1 Reply Last reply Reply Quote 0
                      • andielloyd
                        andielloyd @Woland last edited by

                        @woland @peuclid @liminal_andy @Kathmandale @Fred @Bodo 

                        Just want to thank you all again for all your help and insight. We're opening our show tonight, if anyone is interested in viewing the piece you can stream directly on our Twitch! We have two showings, tonight 20:00PST (Vancouver/LA time), and tomorrow (Sunday) same time. 


                        Fingers crossed that Skype continues to behave for us! All of your tips and suggestions have been immensely helpful. 

                        Grateful always for you all!

                        Isadora User since 2017 | Version 2.6.1 onwards

                        :: Macbook Pro (2021, 16-Inch) Apple M1 Max, 64GB Memory, 1TB Storage

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