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enOehT
Premium Member
join:2003-05-17
Easton, PA

enOehT to SuperNet

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Re: [OS X] AIRPLAY not showing up in Mountain Lion

said by SuperNet:

Only works with Macs 2011 and above

Thanks for the quick reply.

What a rip off. :-( There is no hardware issue/bottle neck preventing it from working just fine.

Count Zero
Premium Member
join:2007-01-18
Milton, FL

Count Zero

Premium Member

I think it's the hardware H.264 encoding that is enabled on the Sandy Bridge and newer platforms. That's what I was told anyways.

Thinkdiff
MVM,
join:2001-08-07
Bronx, NY

Thinkdiff to enOehT

MVM,

to enOehT
said by enOehT:

said by SuperNet:

Only works with Macs 2011 and above

Thanks for the quick reply.

What a rip off. :-( There is no hardware issue/bottle neck preventing it from working just fine.

Yes there is. Your Mac does not have a processor with Intel QuickSync (hardware h264 encoder/decoder). So it would have to use the general CPU to do the compression, which would ruin system performance.

You should still be able to use AirPlay for audio.

daniel_nz
@ihug.co.nz

daniel_nz

Anon

I have a 2011 13" MBP, installed mountain lion lastnight from the Appstore, all good. I noticed Airplay icon is only showing up when connected via cabled network connection. When using wireless, no airplay icon.
Dont despair everyone, maybe this is a bug?
Our iphones see the appletv all the time over WiFi
Razzy
join:2012-06-21

Razzy to Count Zero

Member

to Count Zero
Then how come iPads and iPhones are able to do it?
Riamen
Premium Member
join:2002-11-04
Calgary

Riamen

Premium Member

said by Razzy:

Then how come iPads and iPhones are able to do it?

The iPhone doesn't do AirPlay mirroring. The new iPad and iPad 2 have hardware encoders to mirror the display to Apple TV.

As for AirPlaying video, if the video plays on an iPhone/iPad it's already in a format that will play on the Apple TV so there's no need to encode it.

Count Zero
Premium Member
join:2007-01-18
Milton, FL

Count Zero

Premium Member

The A4 and A5 have hardware H.264 acceleration built-in.
Count Zero

Count Zero to Riamen

Premium Member

to Riamen
My iPhone 4S can do mirroring.
Riamen
Premium Member
join:2002-11-04
Calgary

Riamen

Premium Member

said by Count Zero:

My iPhone 4S can do mirroring.

My mistake, I have iPhone 4, it doesn't. Seems like devices with an A4 can't do the needed encoding for mirroring.

Count Zero
Premium Member
join:2007-01-18
Milton, FL

Count Zero

Premium Member

Guess you're right. I could check with my wife's iPhone 4 when she gets home but perhaps it is just limited to the iPad 2 and the iPhone 4S with their A5s for video mirroring.
Riamen
Premium Member
join:2002-11-04
Calgary

Riamen

Premium Member

said by Count Zero:

Guess you're right. I could check with my wife's iPhone 4 when she gets home but perhaps it is just limited to the iPad 2 and the iPhone 4S with their A5s for video mirroring.

Are we talking about the same thing? I can AirPlay videos from my iPhone 4, I'm talking mirroring what's on the iPhone screen to an Apple TV including the launchpad icon screen.

The Dv8or
Just call me Dong Suck Oh, M.D.
Premium Member
join:2001-08-09
Denver, CO
ARRIS TG862
Cisco 2811
TP-Link Archer AX10

The Dv8or

Premium Member

said by Riamen:

said by Count Zero:

Guess you're right. I could check with my wife's iPhone 4 when she gets home but perhaps it is just limited to the iPad 2 and the iPhone 4S with their A5s for video mirroring.

Are we talking about the same thing? I can AirPlay videos from my iPhone 4, I'm talking mirroring what's on the iPhone screen to an Apple TV including the launchpad icon screen.

4S does full mirroring, 4 does not.

Count Zero
Premium Member
join:2007-01-18
Milton, FL

Count Zero

Premium Member

said by The Dv8or:

said by Riamen:

said by Count Zero:

Guess you're right. I could check with my wife's iPhone 4 when she gets home but perhaps it is just limited to the iPad 2 and the iPhone 4S with their A5s for video mirroring.

Are we talking about the same thing? I can AirPlay videos from my iPhone 4, I'm talking mirroring what's on the iPhone screen to an Apple TV including the launchpad icon screen.

4S does full mirroring, 4 does not.

This. When you stream video you aren't mirroring the video - it's just sending the datastream to the AppleTV for processing and viewing. When you mirror your iPhone or iPad creates a data stream in H.264 format of what you're seeing on your screen and sends that to the AppleTV. That's why hardware encoding is so important - sending a raw, uncompressed datastream would be too demanding on the network and using the general CPU to do the encoding would hit system performance greatly.