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Old May 2, 2012, 04:15 PM   #1
toke lahti
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TV as extended desktop screen via DLNA?

Wirelessly as a quick, convenient extra screen with laptop from time to time.
Is there any solution ready to do this?

I know I can already send my mbp's desktop to tv with vlc, but this is like "mirroring".
What I'd like to do is, that I could define a "virtual monitor" with resolution of 1920x1080 and send that to tv with vlc or any other app that would act as dlna server sending "live" picture of that virtual screen.
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Old May 2, 2012, 07:04 PM   #2
MisterMe
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External displays can either mirror or extend the existing monitor. Why do you want to use extra software to accomplish this function that is built into every Mac?
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Old May 3, 2012, 01:37 AM   #3
toke lahti
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Quote:
Originally Posted by MisterMe View Post
External displays can either mirror or extend the existing monitor. Why do you want to use extra software to accomplish this function that is built into every Mac?
Connecting wirelessly to DLNA television is not built in.
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Old May 3, 2012, 09:43 AM   #4
MisterMe
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Quote:
Originally Posted by toke lahti View Post
Connecting wirelessly to DLNA television is not built in.
Your problem is not DLNA. There are DLNA servers for the Mac. Your problem is wireless display. Some Mac solutions work only with iOS devices. There are other wireless solutions that work with projectors and TVs. InFocus as a wireless network display adaptor. My advice to you is simply this:

Google is your friend.
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Old May 3, 2012, 11:47 AM   #5
robgendreau
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DLNA just sets a protocol for connecting. You still need something on the TV end smart enough to process your video signal a la VNC. Barring that, you need a wired connection.

The VLC solution is essentially streaming, just like video streaming from HBO's servers. And although that looks like it's streaming your monitor video, it's not.
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Old May 4, 2012, 06:33 AM   #6
toke lahti
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I think you guys don't really get it.
This is how it's done with linux:
http://realmike.org/blog/2011/02/09/...a-on-gnulinux/
Streaming a desktop with vlc is same as streaming a video stream. Both video and desktop are pictures that changes over time.
If you have DLNA cabable tv or stb (and robgendreau, I do), you can already stream your laptop's desktop wirelessly with VLC.
If you don't believe, just try.
Run VLC -> File -> Open Capture Device -> Capture -> Screen -> Streaming -> Settings etc.

But, like I said earlier, this is like "mirroring" with cable.
So what I would need is a software that adds "virtual" monitor to Apple's System Preferences' Display Preferences ie. virtual monitor that OsX sees like an ordinary one.
Then I could stream this virtual monitor's desktop with VLC to my tv via DLNA.
Even more convenient would be a software that combines virtual monitor and DLNA server.
I'm not a coder, but if this kind of software does not exist, maybe I should start coding...

And MisterMe, I know that I could buy hardware to do this, but since there would be only occasional usage, I wouldn't like to waste money on something that gets old and need updated drivers etc., when all of this could be done with pretty simple and cheap software.
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Old May 4, 2012, 09:06 AM   #7
MisterMe
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Quote:
Originally Posted by toke lahti View Post
...

But, like I said earlier, this is like "mirroring" with cable.
...
No, it is not like mirroring with cable. What you have shown is sending a [near] real time video capture of your display to the TV.

The Linux solution that you linked to is not an off-the-shelf solution. Michael Fötsch cobbled it together himself. At the heart of his solution is ffmpeg. There is nothing to prevent the Mac user of similar skill and dedication from doing the same thing.
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Old May 4, 2012, 05:08 PM   #8
toke lahti
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Quote:
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No, it is not like mirroring with cable. What you have shown is sending a [near] real time video capture of your display to the TV.
For what is accomplished (=you get picture to external display) it is the same.
Video has different coding, but so does dvi versus dp. So does the available off-the-shelf wireless hardware solutions.
Quote:
Originally Posted by MisterMe View Post
The Linux solution that you linked to is not an off-the-shelf solution. Michael Fötsch cobbled it together himself. At the heart of his solution is ffmpeg. There is nothing to prevent the Mac user of similar skill and dedication from doing the same thing.
I'm not arguing this. I know this linux solution was nerdy way to do this, it could maybe done in OsX (sure about that? How open source would be virtual dislpay drivers for OsX? I guess you'd need at least developer status?) and I also know that I can't do this "cobbling" right now, but this is why I was asking if anybody knows any "off-the-shelf" software solutions.
So far you haven't offered any.
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Old May 12, 2012, 04:08 PM   #9
Woof Woof
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Quickest solution to your problem... Buy an Apple TV, and then install AirParrot on your Mac. You can use your TV as an extended display or mirrored display over wifi or wired.
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Old May 20, 2012, 03:33 AM   #10
toke lahti
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Originally Posted by Woof Woof View Post
Quickest solution to your problem... Buy an Apple TV, and then install AirParrot on your Mac. You can use your TV as an extended display or mirrored display over wifi or wired.
That would be what Apple wants; $100 hardware box, which you wouldn't need if AirParrot could use DLNA.
Hmmm, maybe I'll ask them...
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Old May 21, 2012, 05:26 PM   #11
toke lahti
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Airparrot told that they have not demand to include support for DLNA.
So if there's anybody else that would like to have this, let them know!

Seems to be that this would be a new coding project for somebody...
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