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Author Topic: Looking for HDMI/VGA to SDI converter Ben Edwards Film Handler Posts: 17 From: BRISTOL, CITY OF BRISTOL,ENGLAND Registered: Apr 2014 posted 05-20-2016 11:19 AM                        Hi, we have a NEC 800C Cinema Projector (Dual Link HD-SDI) and are looking for a way to connect computers to it over SDI. Preferably embedding audio (to send it to out CP750 Dolby Processor). Currently use only a single link SDI and send 720p Blu-Ray, which is fine, a converter that does this is sufficient (720 looks great of the screen). So the one we are looking at is the Datavideo DAC-70 which seems to tick all the boxes. It looks like we can connect HDMI or VGA (with RCA audio) and it will embed the audio. Was wondering if anyone has used such a unit or has any alternative suggestions (with the same functionality). We were originally looking at the Decimator MD-CROSS V2 but it does not seem to embed audio and does not have VGA (later not a crucial but nice). Regards, Ben  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-20-2016 11:23 AM                     How will the audio get from the projector to processor if you embed it into the SDI?  |  IP: Logged Ben Edwards Film Handler Posts: 17 From: BRISTOL, CITY OF BRISTOL,ENGLAND Registered: Apr 2014 posted 05-20-2016 11:44 AM                        We use a blackmagic de-embeder to extract the audio. So from the converter we plan to go into the de-embeder which sends single channel SDI-HD to projector and audio to Dolby Processor.  |  IP: Logged Jim Cassedy Phenomenal Film Handler Posts: 1661 From: San Francisco, CA Registered: Dec 2006 posted 05-20-2016 12:21 PM                     A couple of screening rooms I work at use AJA FS-1's. They're quite expensive, (often over $3,000US) but they do "everything". IMO it's often overkill. I've had arguments with film-makers, who think that converting & sending their project over the SDI links will somehow make their crappy video look better. Bozos!  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 05-20-2016 04:10 PM                     Hmm, why embed audio in the first place if you de-embed later anyway, as most of your sources except HDMI will be compatible with the CP750 anyway (S/P-DIF, Toslink, analog). Maybe your de-embedder supports multichannel analog? Well, not my business. You probably want a real scaler, but for what it does, the Datavideo seems to do what you want and the price is right. I'm wondering how good the analog VGA to SDI/HDMI conversion is, given that computers/notebooks will output very different resolutions between 4:3, 16:9, 16:10, etc. up to 1920/1080. - Carsten  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-20-2016 04:36 PM                     We have a customer that swears by an Analog Way scan converter to go from computer to SDI. We didn't sell it so I have no idea the cost but I suspect it isn't cheap. He says it does a phenomenal job of getting computers into SDI and looking good.  |  IP: Logged Ben Edwards Film Handler Posts: 17 From: BRISTOL, CITY OF BRISTOL,ENGLAND Registered: Apr 2014 posted 05-21-2016 03:21 PM                        Embeding audio as we want to be able to run a SDI cable to the stage and have a laptop on stage sending video and audio. We are a multi use venue so as well as cinema we do performance and talks. For this reason we want a portable converter not a rack mounted one. This means we can use it in the projection room or the stage.  |  IP: Logged

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