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chromecast: no audio when casting screen, works with tab

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  chromecast: no audio when casting screen, works with tab Andrea Borgia <andrea@borgia.bo.it> - 2020-12-16 23:20 +0100
    Re: chromecast: no audio when casting screen, works with tab Javier Barroso <javibarroso@gmail.com> - 2020-12-17 07:20 +0100
      Re: chromecast: no audio when casting screen, works with tab Andrea Borgia <andrea@borgia.bo.it> - 2020-12-17 10:20 +0100
        Re: chromecast: no audio when casting screen, works with tab Javier Barroso <javibarroso@gmail.com> - 2021-02-13 21:20 +0100

#229797 — chromecast: no audio when casting screen, works with tab

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Hi.


System in running "Testing", using KDE, I'm trying to get Chromium to 
send audio via Chromecast as well as video.


After enabling the relevant flag[1], I've tried casting a single tab and 
playing a video. It worked well, with audio coming from TV.

Stopped the transmission, switched source to desktop and restarted: 
video is shown, audio remains from computer.

Additionally, using Chrome directly (ughs, I know...) I get the same 
results.

On the other hand, with the office laptop using Windows, both Chromium 
(nightly) and Chrome can share full desktop with audio.


In short: casting from Linux can only send audio from single tab. This 
is of course a problem for applications without native Chromecast 
support, especially with my own laptop having very weak speakers.

Has anyone more recent information[2]? Pointers to hard evidence 
confirming it won't work are also welcome.


Thanks in advance,

Andrea.


[1] chrome://flags/#load-media-router-component-extension

[2] 
https://askubuntu.com/questions/855137/ubuntu-14-04-chromecast-desktop-casting-no-audio

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#229801

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El mié., 16 dic. 2020 23:16, Andrea Borgia <andrea@borgia.bo.it> escribió:

> Hi.
>
>
> System in running "Testing", using KDE, I'm trying to get Chromium to send
> audio via Chromecast as well as video.
>
>
> After enabling the relevant flag[1], I've tried casting a single tab and
> playing a video. It worked well, with audio coming from TV.
>
> Stopped the transmission, switched source to desktop and restarted: video
> is shown, audio remains from computer.
>
> Additionally, using Chrome directly (ughs, I know...) I get the same
> results.
>
> On the other hand, with the office laptop using Windows, both Chromium
> (nightly) and Chrome can share full desktop with audio.
>
>
> In short: casting from Linux can only send audio from single tab. This is
> of course a problem for applications without native Chromecast support,
> especially with my own laptop having very weak speakers.
>
> Has anyone more recent information[2]? Pointers to hard evidence
> confirming it won't work are also welcome.
>

It is a known issue , see

https://support.google.com/chromecast/thread/27045993?hl=en

Maybe somebody know how usé ffmpg to send desktop without lag to Chromecast
(my quick test (from the first result on Google/duckeuckgo) was not ok)?

A hipotetical solution would be record Desktop with ffmpeg, use sometype of
proxy to play the recording on a localhost http URL which could be played
from chromium and then send the tab to chromecast

Regards

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#229802

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Il giorno gio 17 dic 2020 alle ore 07:12 Javier Barroso <
javibarroso@gmail.com> ha scritto:

>
> It is a known issue , see
>
> https://support.google.com/chromecast/thread/27045993?hl=en
>

Great find, thanks for the quick response too :)

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#231706

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I have just find a posible solution

https://www.linuxuprising.com/2020/04/how-to-cast-your-gnome-shell-desktop-to.html?m=1

I will test it in unstable

Regards

El jue., 17 dic. 2020 10:19, Andrea Borgia <andrea@borgia.bo.it> escribió:

>
> Il giorno gio 17 dic 2020 alle ore 07:12 Javier Barroso <
> javibarroso@gmail.com> ha scritto:
>
>>
>> It is a known issue , see
>>
>> https://support.google.com/chromecast/thread/27045993?hl=en
>>
>
> Great find, thanks for the quick response too :)
>
>
>

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