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Posts: 10,727
Registered: ‎08-13-2015

Re: Feature Request: EOS Webcam Utility to present Sound Interface


@livestreamer wrote:

@Waddizzle - I wonder if you have a response on this one?


What do you think?


Your camera is already capable of output clean HDMI.  

 

I suggest that you use it.  All you need is a video capture device.  The Blackmagic Design ATEM Mini HDMI Live Stream Switcher is that type of video capture device.  All you need to add is a USB HDMI capture device, and a microphone.  I do not understand why you would want to use audio from the camera.  I

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"Doctor told me to get out and walk, so I bought a Canon."
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Posts: 26
Registered: ‎07-25-2020

Re: Feature Request: EOS Webcam Utility to present Sound Interface

@Waddizzle

> I do not understand why you would want to use audio from the camera.

I will explain. When livestreaming content where audio and video are required (e.g. music, public speech, dance, etc), it is imperative to synchronise the audio with the video. Any async or drift is uncomfortable for the Consumer viewing / listening to the content.

As a livestream Publisher, when taking only a video signal from the camera, and an audio signal from elsewhere, it is non-trivial to get (and keep) these in sync, especially when receiving video over WiFi.

So it ocurred to me, that the most elegant way to ensure these signals are in sync, would be to combine them at point of sampling from analogue-to-digital - for example how the cameras work when recording video to local storage: combining video from sensor with audio from microphone.

This way, we would get beautiful synced video + audio, with no drift / async:
 
  • recorded locally (already exists)
  • served over HDMI (untested, maybe already exists)
  • served over USB / WiFi to Webcam Utility (possible, but not implemented)

Further, the EOS R already has such good onboard audio hardware - so why not use it more broadly?

  1. The in-built stereo microphone is really very good.
  2. The headphone socket is excellent for monitoring sound levels.
  3. The stereo MIC line-in opens many opportunities to connect to sound sources (maybe over Rodelink)

These present an excellent basis upon which to put Canon in control of the audio as well as the video - if only they can match audio to video in-camera. Even no need for new hardware... just bring software in line with latest hardware.

> All you need is a video capture device.
 
I've been using a pair of Magewell USB Capture HDMI Plus devices to great effect for over 2 years now, capturing 1080p from 2 x 5D Mk iii: http://www.magewell.com/products/usb-capture-hdmi-plus - these are very good, but I have the following to share:
 
  • HDMI Cabling is cumbersome and intrusive, especially in an intimate setting.
  • Single-purpose devices end up getting left behind when moving
  • More complexity increases the barrier to entry for other people, and I like sharing

Right now I am looking to minimise and rationalise my hardware needs, especially as I'm carrying around all this audio-equipment in the EOS R, and it's not being used.

 
A final note on this topic: I'm all for doing more in software, instead of proliferating single-purpose hardware devices - I think it's something to do with the environment.

Anyway, thanks for your feedback on this - I've brought together a summary of my thinking here: https://community.usa.canon.com/t5/Software/A-Roadmap-for-Livestreaming-Canon-Software-and-Hardware/... I invite you to comment.
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Posts: 10,727
Registered: ‎08-13-2015

Re: Feature Request: EOS Webcam Utility to present Sound Interface

[ Edited ]

"@Waddizzle

> I do not understand why you would want to use audio from the camera.

I will explain. When livestreaming content where audio and video are required (e.g. music, public speech, dance, etc), it is imperative to synchronise the audio with the video. Any async or drift is uncomfortable for the Consumer viewing / listening to the content."

 

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No need to explain something that I did not ask about.  I find it VERY odd that someone who is so interested in using the highest quality 4K video to live stream music performances would want to settle for the  low quality, audio in a DSLR.  Your AM radio has wider bandwidth and dynamic range..

 

No response is needed or desired.  BTW, your link seems to be dead or bogus.

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"Doctor told me to get out and walk, so I bought a Canon."
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Frequent Contributor
Posts: 26
Registered: ‎07-25-2020

Re: Feature Request: EOS Webcam Utility to present Sound Interface

[ Edited ]

> Your AM radio has wider bandwidth and dynamic range..

Please don't misunderstand me - I don't mean the playback capabilities of the camera - that's terrible. I'm talking about inputting a stereo line-in to the camera's audio input, direct from the mixer, probably via a Rodelink.

And wow, did you guys really remove my post entitled "A Roadmap for Livestreaming - Canon Software and Hardware"?

Why would you do that?

 

https://community.usa.canon.com/t5/Removed-Posts/A-Roadmap-for-Livestreaming-Canon-Software-and-Hard...

 

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