[cisco-voip] cisco hdmi to dvi cable - audio from HDMI?

Sun Sep 9 09:02:56 EDT 2018

I like when things come full circle...

I remember when doing my research for HDMI-to-USB capture devices, one of them mentioned I could customize the resolutions available to lock in what I wanted. I never went with their solution, but Lo and behold, they were using EDID.

https://www.epiphan.com/blog/what-is-edid-and-why-is-it-important/

-sent from mobile device-

Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<x-apple-data-detectors://1/0>
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>

www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and Facebook

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On Sep 8, 2018, at 10:32 AM, Heim, Dennis <Dennis.Heim at wwt.com<mailto:Dennis.Heim at wwt.com>> wrote:

I haven’t been following this thread too closely, so I might be off base, but here goes. I have a C40 and my laptop has HDMI and through more work than it should be am able to share video and audio.

Laptop->HDMI->HDMI Doctor/EDID spoofer->HDMI splitter->C40.

The HDMI doctor is used to make my laptop think audio is supported down the HDMI wire.
Connected to the HDMI doctor is a gefen HDMI audio extractor which sends the audio via RCA/SPDIF to the C40. The video travels down hdmi, which has a HDMI->DVI adapter. I have been using this setup for about 3 years.

Dennis Heim | Emerging Technology Architect (Collaboration)
World Wide Technology, Inc. | +1 314-212-1814
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From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Friday, September 07, 2018 9:08 PM
To: Ryan Ratliff (rratliff) <rratliff at cisco.com<mailto:rratliff at cisco.com>>
Cc: voyp list, cisco-voip (cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>) <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>>
Subject: Re: [cisco-voip] cisco hdmi to dvi cable - audio from HDMI?

Interesting... macro to switch pc to main video stream? how so?
-sent from mobile device-

Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<x-apple-data-detectors://1/0>
519-824-4120 Ext. 56354<tel:519-824-4120;56354> | lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>

www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and Facebook

[University of Guelph Cornerstone with Improve Life tagline]

On Sep 7, 2018, at 4:35 PM, Ryan Ratliff (rratliff) <rratliff at cisco.com<mailto:rratliff at cisco.com>> wrote:
Playing music through the room audio system (maybe that’s just me).

On your side it’s going to be driven by your users I think, but keep in mind that if they are sharing a video you’ll want a macro set up to switch the PC input to the main video stream from content to take advantage of the higher framerates on the main channel.

-Ryan

On Sep 7, 2018, at 3:37 PM, Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>> wrote:

Alright – before I go spending big bucks… what do we think the use case here is?

I plug my laptop into the V/C unit so I get my display to share. When would I need audio? For fancy slide shows, maybe a video show?

I’m thinking it’s not gonna happen often…

---
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354 | lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>

www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and Facebook

<image001.png>

From: Ryan Ratliff (rratliff) <rratliff at cisco.com<mailto:rratliff at cisco.com>>
Sent: Friday, September 7, 2018 9:19 AM
To: Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>>
Cc: voyp list, cisco-voip (cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>) <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>>
Subject: Re: [cisco-voip] cisco hdmi to dvi cable - audio from HDMI?

I’m quite certain it will not transfer digital audio from the HDMI port to the analog 3.5mm connector on the DVI side. That would require an active converter.

Given the complexities in this (and how it breaks HDCP) unless the thing you are buying specifically says it does it assume it does not.

Amazon has boxes that will do this, but a quick search doesn’t give me any cables that do it.

-Ryan

On Sep 6, 2018, at 2:54 PM, Lelio Fulgenzi <lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>> wrote:

Does anyone know if the CAB-DVI-HDMI-8M+= cable will take audio directly from the HDMI source and pump it to the audio cable in the DVI end? Or whether both 1/8” jacks need to be plugged in to feed audio to the far end?

https://www.cdw.ca/product/cisco-video-audio-cable-hdmi-dvi-8-m/4486020#PO

We have a C60 and two SX20s that only have DVI in with a spare mic input. Of course, laptops nowadays have HDMI. Not too many have the audio out. Or close enough for that little pigtail.

---
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354 | lelio at uoguelph.ca<mailto:lelio at uoguelph.ca>

www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and Facebook

<image001.png>

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