[mythtv-users] distributed simultaneous playback

[Hika van den Hoven]

Hoi Mark,

Friday, August 28, 2015, 11:59:58 PM, you wrote:

> On 08/28/15 12:22 PM, Jerome Yuzyk wrote:
>> On Friday, August 28, 2015 11:44:29 AM Mark Wedel wrote:
>>> On 08/28/15 09:31 AM, Jerome Yuzyk wrote:
>>>> What options would I have to display MythFrontend playback simultaneously on monitors in my living room and kitchen, about 40 feet apart? I can use wired gigabit and only do SD so bandwidth shouldn't be an issue. I only need a screen in the kitchen, I can get enough sound from the living room and the remote has a clear line of sight.
>>>>
>>>> VNC? Long HDMI cable?
>>>>
>>>> Taking this a step further, to provide full sound and remote in the kitchen, is there any way to set up MythFrontend to do this?
>>>>
>>>
>>>
>>>    I do something like this at home - I'm only one person, so do not need
>>> discrete outputs.  I'm presuming you want the simulateously playback because you
>>> may wander from the kitchen to the living room and back, so if you fast forward
>>> one, you want the other fast forwarded, etc.
>>
>> Right. Pretty much for sports. My kitchen layout precludes a view of the monitor in the living room.
>>
>> I have an nVidia card with DVI and HDMI. I use the DVI to my main monitor and sound from the onboard soundcard. So I could use the HDMI output to drive the kitchen display? I don't need much for sound right now, but with HDMI I could use a display that has sound built in to give it a little more presence there. An IR repeater - never thought of that, good idea. I thought I might just try a well-placed mirror. :)
>>

>   So the nvidia cards do support cloning - outputting the same image to multiple
> outputs.  So that is the simple way to do that without splitters.  However,
> cloned images run at same resolution/refresh - not an issue if both of your
> devices are 1080p for example.

>   However, audio gets a little trickier, because the audio that the hdmi devices
> uses and the audio that is from your onboard motherboard are different devices
> (if you look at you system, you'd probably see 2-3 different audio devices -
> onboard, hdmi, and possible DVI, even though the DVI spec does not officially
> support audio)

>   I don't think mythtv has any method to duplicate audio to multiple stream
> devices.  I think this can be done through some pulseaudio, but it isn't a
> simple 'click this button' and it is done.

> Presumably you are displaying over DVI because the monitor lacks HDMI input?

> There are some hdmi -> dvi adapters that also break out the audio, but those
> tend to be more expensive (and then you would also need an hdmi splitter)

>   Presuming the TV in the kitchen has an audio input jack, it might just be
> simplest to get an audio splitter (passive - probably a few $), and when you run
> whatever cable to the kitchen, also run an audio cable - probably cheapest to
> just get some speaker wire and solder on the RCA jack on each end.  I'll presume
> you are using analog audio, so running speaker wire that far probably won't be
> an issue in terms of quality.

A few month ago there was a thread about sending audio to multiple
alsa devices by creating pcms. You have to search the archives.


Tot mails,
  Hika                            mailto:hikavdh at gmail.com

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