Unable to cast from YouTube/All4 - Google speakers are greyed out about fx_cast HOT 3 CLOSED

Ah, speakers, that makes sense. Chromecast apps have a compatibility flag for audio-only devices that the extension checks before it allows you to cast to them. Spotify supports them, YouTube and All 4 do not.

I can't say whether it would actually work if you could cast to them, they're certainly not supposed to receive video streams. The difference here is that Chrome can capture an audio stream from a tab and send that via its mirroring functionality whereas Firefox doesn't have API support for that yet.

So, this is the intended behaviour, but there's clearly some room for improvement in the UI as to how unsupported devices should be displayed (if at all).

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Thank you so much for explaining this.

Hopefully, it can be fixed at some point by firefox (not much hope tho, considering the development of the app).

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You're welcome.

not much hope tho, considering the development of the app

Yeah, I'm certainly not getting my hopes up. I've been waiting 4-5 years for improvements on a number of things on the Firefox side that have yet to materialise. Limited development resources, I suppose.

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