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    Low latency capture card

    How To... ?
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    • Skulpture
      Skulpture Izzy Guru last edited by

      Hmmmm interesting! Thanks for the update!

      Graham Thorne | www.grahamthorne.co.uk
      RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
      RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
      RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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      • J
        jgastonraoul last edited by

        Just sharing my own experience :

        I've just bought an Intensity Shuttle USB3 and it works on my mid 2012 (non retina) MBP on OSX 10.8.5.
        But I had to test every single input settings before to find which one was the good for my GH3 and my Gopro (so if you have a black screen while trying to input video from this card, just test other input settings).
        I was thinking it would discover itself what are the right ones... (like my TV do...)
        And I can't input signal at 1080/25p (I had to change my GoPro record settings to 24p...).
        I hope that BlackMagic will fix that in their next driver release...

        MBP mid 2012 - quad-core i7 2.3GHz - 16GB RAM - 512GB SSD - OS 10.9.5
        http://jgastonraoul.tumblr.com

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        • F
          fifou last edited by

          I had to search right settings too.
          And it seems deinterlacing doesnt work.. for the moment I hope.

          MacBookPro 15' 2012 - QuadCore i7 @ 2,66GHz - 16GB RAM - NVIDIA GeForce GT 650M 1024Mo VRAM - 2 Internal SATA SSD Hard Drives - OSX10.13.6 - Isadora 3.0.7

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          • vanakaru
            vanakaru last edited by

            jgastonraoul

            I wonder how you Gopro works. I have stayed away from using it for live and not testing actually. Do you go HDMI out and do you get clean frame without any icons? I have HD2 sitting araound that I do not use much, but for live there would be a life for it.

            MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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            • J
              jgastonraoul last edited by

              @vanakuru

              I did a quick test with my Gopro HD Hero 3 black HDMI out yesterday and it seems to work !
              To remove icons, I had just to set OSD option to Off. And for the settings, I selected 1080/24p on GoPro and Intensity shuttle.
              If you can't make it work clean, just tell me and I'll give another try.

              MBP mid 2012 - quad-core i7 2.3GHz - 16GB RAM - 512GB SSD - OS 10.9.5
              http://jgastonraoul.tumblr.com

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              • vanakaru
                vanakaru last edited by

                OK! I got the mini(micro) HDMI adapter and was able to hook my idle GoProHD2 to Matrox MXO2. Great quality 1080p PAL 25fps. I have a project requiring closeup lens camera and this is absolutely perfect. Now when new HD3 is about to come out I see HD2s selling for 100EUR. It would be great camera for live capture - latency with MXO2 is about 1/3 of a sec, picture is very good on daylight and not too bad with poor lighting(gets grainy) and as a great bonus you can record what the camera sees while broadcasting live. Powering via USB mini connection works fine. And it is a small camera.

                MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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                • J
                  jgastonraoul last edited by

                  The Hero3 black edition is far more expensive, but really better in low light conditions if you need to use it on stage.

                  MBP mid 2012 - quad-core i7 2.3GHz - 16GB RAM - 512GB SSD - OS 10.9.5
                  http://jgastonraoul.tumblr.com

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                  • J
                    josua last edited by

                    I have a LFG4 installed in my MacPro with 2.8Ghz quadCore Xeon, 20GB Ram and dual ATI Radeon HD5770

                    I am capturing two NTSC streams at half res from the live IMAG cameras, and compositing them with my video content picture in picture style. I am running at full 30fps but there is still a substantial amount of latency and "lip sync" issues with the audio which runs straight through FOH console. Are there any ways I could optimize my system or Isadora to reduce latency?
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                    • F
                      fifou last edited by

                      You'll always have more or less latency.
                      Maybe you could add a delay to your audio to resync audio and video.. !

                      Best
                      Philippe

                      MacBookPro 15' 2012 - QuadCore i7 @ 2,66GHz - 16GB RAM - NVIDIA GeForce GT 650M 1024Mo VRAM - 2 Internal SATA SSD Hard Drives - OSX10.13.6 - Isadora 3.0.7

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                      • J
                        josua last edited by

                        Adding a delay to the audio isn't an option for us. I can accept some latency, but I do need to improve it. What are some parameters that affect latency that I can check out?

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                        • J
                          josua last edited by

                          Adding a delay to the audio isn't an option for us. I can accept some latency, but I do need to improve it. What are some parameters that affect latency that I can check out?

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                          • F
                            fifou last edited by

                            Sorry, I don't have clear answer about that.
                            Try to tweak a right balance between resolution-codec-quality in the live capture settings box...

                            regards
                            Philippe

                            MacBookPro 15' 2012 - QuadCore i7 @ 2,66GHz - 16GB RAM - NVIDIA GeForce GT 650M 1024Mo VRAM - 2 Internal SATA SSD Hard Drives - OSX10.13.6 - Isadora 3.0.7

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                            • Skulpture
                              Skulpture Izzy Guru last edited by

                              @josua  have you got any effects on the video?

                              Graham Thorne | www.grahamthorne.co.uk
                              RIG 1: Custom-built PC: Windows 11. Ryzen 7 7700X, RTX3080, 32G DDR5 RAM. 2 x m.2.
                              RIG 2: Laptop Dell G15: Windows 11, Intel i9 12th Gen. RTX3070ti, 16G RAM (DDR5), 2 x NVME M.2 SSD.
                              RIG 3: Apple Laptop: rMBP i7, 8gig RAM 256 SSD, HD, OS X 10.12.12

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