- Posts: 3
- Joined: Wed Nov 06, 2019 8:08 pm
- Location: Redwood City, CA
- Real Name: Michael Angeletti
Hi all,
I work in an archival digitization facility where we digitize (almost exclusively) legacy analog magnetic media such as U-matic, VHS, Betamax, Betacam, Video8, etc. We are using a Blackmagic UltraStudio 4K Extreme 3 to digitize. We must use broadcast-grade CRTs and scopes to monitor the video signal during digitization, both at the output of the analog tape playback device, as well as the output of the digitized SDI signal from the UltraStudio 4K. We are using Mac OS 10.15.7 (Catalina), installed on a Mac Mini (3.2 GHz Intel i7, 6-core, 64 GB RAM).
This has worked well for us so far, as long as we don't use any version of Desktop Video above 11.2. If we do, the SD-SDI output of the UltraStudio has a horrible pink artifact in the vertical blanking interval. It's so bright and saturated that I'm worried it may be hurting the phosphors in our CRT monitors. We can't use flat panel monitors for this work. We need to monitor the 59.94 interlaced video signal from the SDI output of the UltraStudio into a interlace scan monitor with overscan and H/V delay functions for QC. We've confirmed with Blackmagic that this is a problem with the driver/firmware, and not a problem with our UltraStudio devices. It happens when we test with different Macs and different UltraStudio hardware. They have no interest in spending time or money addressing this problem.
Last week, one of our Mac Minis died, and we need to purchase a replacement. Will Desktop Video 11.2 work with an M1 Mac running Monterey? Where does the firmware/driver compatibility start to become an issue with newer operating systems? If we must, we will look into purchasing an older Mac. Since Blackmagic Design will not address this bug, we don't have much choice.
Thanks for any ideas or information you can provide!
I work in an archival digitization facility where we digitize (almost exclusively) legacy analog magnetic media such as U-matic, VHS, Betamax, Betacam, Video8, etc. We are using a Blackmagic UltraStudio 4K Extreme 3 to digitize. We must use broadcast-grade CRTs and scopes to monitor the video signal during digitization, both at the output of the analog tape playback device, as well as the output of the digitized SDI signal from the UltraStudio 4K. We are using Mac OS 10.15.7 (Catalina), installed on a Mac Mini (3.2 GHz Intel i7, 6-core, 64 GB RAM).
This has worked well for us so far, as long as we don't use any version of Desktop Video above 11.2. If we do, the SD-SDI output of the UltraStudio has a horrible pink artifact in the vertical blanking interval. It's so bright and saturated that I'm worried it may be hurting the phosphors in our CRT monitors. We can't use flat panel monitors for this work. We need to monitor the 59.94 interlaced video signal from the SDI output of the UltraStudio into a interlace scan monitor with overscan and H/V delay functions for QC. We've confirmed with Blackmagic that this is a problem with the driver/firmware, and not a problem with our UltraStudio devices. It happens when we test with different Macs and different UltraStudio hardware. They have no interest in spending time or money addressing this problem.
Last week, one of our Mac Minis died, and we need to purchase a replacement. Will Desktop Video 11.2 work with an M1 Mac running Monterey? Where does the firmware/driver compatibility start to become an issue with newer operating systems? If we must, we will look into purchasing an older Mac. Since Blackmagic Design will not address this bug, we don't have much choice.
Thanks for any ideas or information you can provide!
- Attachments
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- Vectorscope showing hot pink aberration
- SDI_vector.jpeg (380.77 KiB) Viewed 4930 times
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- SDI H-V delay showing artifact
- 02_SonyPVM14L5_Horizontal-Vertical_Delay.jpeg (335.47 KiB) Viewed 4930 times
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- SD-SDI output from UltraStudio into CRT in overscan mode
- 01_SonyBVM24_overscan.jpeg (525.04 KiB) Viewed 4930 times