You still haven’t shared what the final resolution needed is, so I can’t say if a single output with a custom EDID from Spyder X80 will meet your needs. This will only work with Intel Macs, naturally. I would expect this would work for 4k also, since I have done frame synced 4k outputs from an Intel Mac with a Radeon Pro GX 7100 and a FirePro S400 sync card and the same sync generator. Once I switched the sync gen to the same rate as the outputs, it all locked together. Initially I had the sync generator set to a different frame rate than the output settings in Mitti - I think I had it set to 60Hz instead of 59.94Hz, and so we experienced tearing that sort of floated in and out of sync. This was specifically to test tearing, so we chose content that would accentuate it. These two inputs were butted together in the Spyder, and we sent the center of the wide content to a 1080p monitor. The X20 is not a 4K machine, so we were running the outputs on the Decklink at 1080p59.94 into the Spyder. The software likely sends out frames to each "separate card" as soon as they're ready from the GPU, with complete disregard for what the other "cards" are doing). The computer actually treats the 4 SDI connectors as 4 individual Decklink cards, which is probably why they are out of sync. Hopefully easy enough in the software you're using.ĭoing it any other method seems to result in exactly the problem you've shown (I've seen this issue on a Decklink Duo 2, since that model doesn't have any quad split mode. I'm usually a QLab and Resolume user, and this is pretty easy in those. if you arrange your content to span across the top half of a "full 8K frame", and just leave the bottom half black, you can just take the first 2 SDI outs from the Decklink. Only downside to this setup is that it does require you do some mapping in your playback software. This should ensure all outputs are in sync. and the Decklink hardware will take that feed and split it across its 4 outputs. Essentially just means you send one 4K/8K feed to it from Mitti etc. AFAIK, that will make the Decklink show up in your playback software as a single 4K/8K device, as opposed to 4 individual connectors like it does by default. There should be some "4K/8K Quad Split" mode you can enable. ![]() If I remember right, the Decklink 8K Pro (along with some of the multi-SDI 4K models) have a few different output modes (these are set in the Desktop Video Setup app). This seems to be the same problem that was happening to u/covideo500 in this thread from 4 months ago: I really believe this is an issue with the new M1's I have also tried using PVP, ProPresenter and Millumin and all have eventually had the same issue. This is sending to a Spyder X80 which is also genlocked. It will eventually get back in sync, only to go back out at random times. But over time it gets out of sync like in the video. At first I thought that fixed it because it worked right away. ![]() Which is what my switcher is getting and what the 2 outputs out of Mitti are set to. This DeckLink card has a sync in and I am sending it 59.94. Once again the old Intel Macs had no problem with this. I have moved to doing it this way because I have given up on the extended displays syncing up. I am using a DeckLink 8K Pro in a Sonnet eGPU Breakaway Box connected to a Mac Studio with an M1 Ultra Chip. I'm using Mitti to play the video with it positioned in the middle where the two outs line up. In the video I've linked here what you're seeing is 2 4Ks next to one another. The old intel chips had no problem doing this. ![]() Ever since moving to the M1 Max and Ultra chips I have had issues not getting the extended display to stay in sync.
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