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    Low latency capture card

    How To... ?
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    • dbengali
      dbengali last edited by

      About to do a small project with live off-stage actor on camera via isadora, and live sound, which will not be running through the same computer.

      Knowing that there will be at least some latency in the video, even if we use a fast capture card, are there affordable solutions anyone might recommend to get the audio in sync with the video?
      -David
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      • MatthewH
        MatthewH Beta Tester last edited by

        Any decent digital mixer will have per input channel delay precisely for those sorts of applications.

        Matthew Haber :: matthewhaber.com :: besidedigital.com :: Download my actors: http://www.matthewhaber.com/isadora-actors

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        • Armando
          Armando Beta Gold last edited by

          Thanks for the answer Fred. No software solution then isn't it?

          Armando Menicacci
          www.studiosit.ca
          MacBook Pro 16-inch, 2021 Apple M1 Max, RAM 64 GB, 4TB SSD, Mac OS Sonoma 14.4.1 (23E224)

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          • vanakaru
            vanakaru last edited by

            I have Matrox MXO2 that will capture live video good for lip-sync similar to PS3. There are many versions of this card depending what connections to your mac you have.

            I have read that BlackMagic Intensity will do the same.
            http://www.blackmagicdesign.com/products/intensity/
            http://www.matrox.com/video/en/products/mxo2/

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

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            • F
              fifou last edited by

              Thanks Vanakaru,

              That's exactly what I meant by talking about "latency" : I'd like a good "lip-sync" when live filming my actors on stage.
              I'm about to test the blackmagic Intensity Usb3.0 (someone is going to lend me one).

              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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              • keftaparty
                keftaparty last edited by

                Hi Fifou,

                I think the usb3 shuttle from blackmagic is not compatible with mac osX. It's a windows only device.
                Mehdi

                ...
                Mehdi Toutain-Lopez
                www.toutain-lopez.com

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                • F
                  fifou last edited by

                  You're right Mehdi, but drivers for Intensity Shuttle USB3.0 on mac just arrived !
                  http://forum.blackmagicdesign.com/viewtopic.php?f=11&t=3518
                  But if I buy one, I'll buy the thunderbolt one.
                  Do you think an Intensity shuttle thunderbolt and a Matrox Tripplehead thunderbolt can work together on the same port ? (With a thunderbolt hub of course) ?

                  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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                  • N
                    nick last edited by

                    I don't think there is such a thing as a thunderbolt hub - you need a device with two connections (a through connection) to be able to have more than one device connected to a computer with a single thunderbolt port

                    MacBook Pro 11.5.2

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                    • Skulpture
                      Skulpture Izzy Guru last edited by

                      There is the Thunderbolt dock but don't know too much about it if i'm honest.

                      http://store.apple.com/uk/product/HB865B/A/belkin-thunderbolt-express-dock?afid=p219%7CGOUK&cid=AOS-UK-KWG-PLA-PLA_UK_BTB
                      I would love theĀ Intensity Shuttle USB3.0 to work on Mac; would save a few quid! Not just for the device but also the expense of the thunderbolt cable!

                      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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                      • Skulpture
                        Skulpture Izzy Guru last edited by

                        From BM forum:

                        "I can confirm that the USB 3.0 Intensity Shuttle works with the Macbook Pro in Mac OS X 10.8.4\. Use driver 9.7.9."

                        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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                        • MatthewH
                          MatthewH Beta Tester last edited by

                          I have a Belkin Thunderbolt Dock and can answer any questions about it. That being said, it doesn't give you any more thunderbolt ports than your computer already has so I don't know what good it would do in this instance.

                          Matthew Haber :: matthewhaber.com :: besidedigital.com :: Download my actors: http://www.matthewhaber.com/isadora-actors

                          1 Reply Last reply Reply Quote 0
                          • F
                            fifou last edited by

                            I just tried, It works !
                            Blackmagic Intensity Shuttle USB3.0 works on mac OSX 10.8.4. Install osx drivers, plug the card, driver asks for online update, update, it works !
                            Latency in composite capture is much more acceptable. Is still have some issues with deinterlacing. This card is supposed to deinterlace but it seems it doesnt work... For the moment Isadora does it.
                            I'll choose this USB3.0 card and save my only thunderbolt port for my forthcoming Matrox Tripplehead..

                            Thanks all for your comments.
                            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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                            • 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

                              1 Reply Last reply Reply Quote 0
                              • 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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