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Re: [mediacapture-main] Clarify getUserMedia({audio:{deviceId:{exact:<audiooutput_device>}}}) in this specification mandates capability to capture of audio output device - not exclusively microphone input device (#650)

From: guest271314 via GitHub <sysbot+gh@w3.org>
Date: Tue, 10 Dec 2019 15:37:21 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-564090839-1575992239-sysbot+gh@w3.org>
@guido 

> No, it doesn't since it expects getUserMedia to capture from devices marked as "audiooutput".
It works in Firefox for Linux due to implementation-specific characteristics such as how some exposed devices are named. 

Why is 

> `MediaDeviceKind` Enumeration description
> `audiooutput` | Represents an audio output device; for example a pair of headphones.

in the specification?

Why would a reader of the specification not reach the conclusion that it is possible to capture audio output per this specification where the plain language states that an `audiooutput` represents "Represents an audio output device; for example a pair of headphones." where no language in the specification prohibits such an interpretation?

> That was filed as a bug, which it is not. Therefore it cannot be "fixed".
> Feel free to file a feature request.

Stating that in the comment before you closed the issue https://bugs.chromium.org/p/chromium/issues/detail?id=1013881#c8

> This is a feature request to eliminate steps, not a bug.

do you not have the ability to change the "Type" from "Bug" to "Feature request"? 

If not, how to make it clear that the issue is a feature request, not a bug?

Yes, implementers do try to meet the spec. They might also do whatever they want, irrespective of any specification, without providing any documentation why https://bugs.chromium.org/p/chromium/issues/detail?id=1018580#c67

> What is the formal documented description and expected result of the "Finch experiment" that produced this bug?

Have no issue filing the feature request, again, if you cannot change the "Type" to feature request on the issue you closed.

Do not gather we will agree on interpretation of the specification re the meaning of "audiooutput" and your interpretation of "headphones" (output) meaning "Microphone" (input). You can resolve that inconsistency by updating the specification to make it clear that capturing "audiooutput" device really meaning capturing input device, not audio output from the system, in spiite of what actually occurs at Firefox.

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