Difference between revisions of "AirTunes/AirPlay"

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(Add iOS screenshot)
(Troubleshooting info on Airplay from http://www.gossamer-threads.com/lists/mythtv/users/580235)
 
(5 intermediate revisions by 4 users not shown)
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MythTV 0.25 added support for '''AirTunes''' and '''AirPlay''' for streaming audio and video from Apple iTunes & iOS devices to MythFrontend.
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MythTV supports '''AirPlay''' for streaming audio, video and photos from Apple iTunes & iOS devices to MythFrontend. MythFrontend mimics most of the AirPlay functions of an AppleTV.
 +
{{Note box|''AirPlay'' (and MythTV in general) do not support DRM encrypted videos such as those purchased via the Apple Store. Playback of such content will fail.}}
  
{{Note box|Please note - ''AirPlay'' (and MythTV in general) do not support DRM encrypted videos such as those purchased via the Apple Store. Playback of such content will fail.}}
+
AirPlay was originally called "AirTunes" when it only supported streaming music.  MythTV support was added in version 0.25 and substantially enhanced in 0.27.
  
== Enabling AirTunes ==
+
==Enabling AirPlay==
AirTunes does not work out the box because AirTunes is a proprietary format and is encrypted in order to enable vendor lock-in. Fortunately the encryption key has been discovered which enables use of AirTunes in open source applications such as MythTV.
+
AirPlay is a proprietary format and is encrypted...but the encryption key has been discovered which enables its use in open source applications such as MythTV.
  
 
When starting the frontend, you will get the following message in the log:
 
When starting the frontend, you will get the following message in the log:
Line 10: Line 11:
 
   RAOP Conn: Failed to read key from: /home/<user>/.mythtv/RAOPKey.rsa
 
   RAOP Conn: Failed to read key from: /home/<user>/.mythtv/RAOPKey.rsa
  
You can obtain the key from the [https://raw.github.com/juhovh/shairplay/master/airport.key shairplay source].
+
You can obtain the key from the [https://raw.github.com/juhovh/shairplay/master/airport.key shairplay source]. Copy the entire section:-
 
+
Simply copy the entire section:-
+
  
 
   -----BEGIN RSA PRIVATE KEY-----
 
   -----BEGIN RSA PRIVATE KEY-----
Line 28: Line 27:
 
   ''shell> ''openssl rsa -in ~/.mythtv/RAOPKey.rsa -outform der | openssl sha1
 
   ''shell> ''openssl rsa -in ~/.mythtv/RAOPKey.rsa -outform der | openssl sha1
  
== Enabling AirPlay (video support) in MythTV 0.25 and Above==
+
==Using AirPlay==
This section only applies to 0.25
+
===iPhone or iPad===
  
AirPlay support is disabled by default, you have to manually enable it at the command line.
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[[File:AirPlay_icon.png|thumb|AirPlay icon]]
 
+
=== Enabling In All Operating Systems ===
+
 
+
In 0.25:
+
 
+
Set the environment variable named MYTHTV_AIRPLAY before starting the frontend from the command line, for example:-
+
 
+
''shell> ''export MYTHTV_AIRPLAY="1"
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''shell> ''mythfrontend
+
 
+
where ''shell>'' denotes the command-line prompt, not something you type.
+
 
+
In 0.26 and above, use the frontend GUI,
+
 
+
Setup -> General -> AirPlay Settings
+
 
+
=== Permanently Enabling in Ubuntu 10.04 and later (0.25 only) ===
+
Add this line in [http://manpages.ubuntu.com/manpages/hardy/man5/pam_env.conf.5.html ~/.pam_environment]
+
 
+
MYTHTV_AIRPLAY DEFAULT="1"
+
 
+
Re-login to load the environment variable.
+
 
+
=== Permanently Enabling in OSX Finder ===
+
 
+
If you want it enabled for starting '''MythFrontend''' from the Finder, run
+
 
+
''shell> ''echo setenv MYTHTV_AIRPLAY 1 | launchctl
+
 
+
and if you want it enabled this way permanently then run
+
 
+
''shell> ''echo setenv MYTHTV_AIRPLAY 1 >> ~/.launchd.conf
+
 
+
==In iTunes or on your iOS device==
+
 
+
[[File:AirPlay_icon.png|thumb|AirPlay mirroring icon]]
+
  
 
From http://support.apple.com/kb/HT4437
 
From http://support.apple.com/kb/HT4437
  
Enable AirPlay from your iPhone (4S or 5) or iPad directly from the recently used apps section in iOS:
+
Connect your iPhone or iPad and your Apple TV [MythTV frontend, in our case] to the same Wi-Fi network.
  
Connect your iPhone or iPad and your Apple TV to the same Wi-Fi network.
+
iOS 7:  Swipe up from the bottom of the screen to show the Control Centre. Tap the AirPlay icon and select from the available AirPlay devices.
On your iPhone or iPad, double-click the Home Button to display your recently used apps.
+
Swipe your recently used apps twice from left to right until you see the  icon.
+
  
Tap the icon to display a list of available AirPlay devices.
+
iOS 6:  On your iPhone or iPad, double-click the Home Button to display your recently used apps.
 +
Swipe your recently used apps twice from left to right until you see the  icon.  Tap the icon to display a list of available AirPlay devices.
  
 
[[File:Myth0.25_Airplay_video.PNG|thumb|Example Airplay selection screen from iPhone 5 running iOS 6.]]
 
[[File:Myth0.25_Airplay_video.PNG|thumb|Example Airplay selection screen from iPhone 5 running iOS 6.]]
  
 +
If the AirPlay icon does not appear in the Control Centre, it may appear inside supporting applications.  YouTube, Pandora, etc will show the AirPlay icon within the app if a supported target device (MythTV in this case) is detected on the network.
  
 +
===iTunes (Mac or Windows)===
 +
In iTunes, AirPlay is enabled by the same icon, which should appear in the lower right corner of the window.
 +
 +
===No mirroring===
 
Note that AirPlay Mirroring is not supported.
 
Note that AirPlay Mirroring is not supported.
  
 +
==Troubleshooting==
  
If the AirPlay icon is not appearing in your app tray, it may appear inside supporting applications.  YouTube, Pandora, etc will show the AirPlay icon within the app if a supported target device (MythTV in this case) is detected on the network.
+
=== Can't Start / Nothing in frontend logs ===
  
 +
Ensure mythfrontend is listening on a network-connected interface, especially if you see initial startup logs that imply AirPlay is active, but you can't get any further. If you have a combined backend/frontend system, you may have a local IP address specified in mythtv-setup -> General (e.g. 127.0.0.1 for IPv4 and ::1 for IPv6), which means mythfrontend isn't listening on any interfaces that are reachable from your local network. Usually, this can be solved simply by checking the "Link-local" box on the same mythtv-setup page, which instructs MythTV to listen on IPv6 addresses that are reachable on your local network. However, this requires that you have IPv6 enabled: check that at least one network-connected interface has an IPv6 address (e.g. "ip -6 addr").
  
In iTunes, AirPlay is enabled by the same icon, which should appear in the lower right corner of the window.
+
AirPlay may also work without IPv6 so long as mythfrontend is listening on a network-accessible interface (e.g. 192.168.0.2). This is unclear, though. You can try setting the IP addresses specified in mythtv-setup to a network-accessible one, or else leave those fields blank to allow MythTV to choose sensible defaults.
  
== Troubleshooting Notes ==
+
After changing IP addresses, a restart of both the backend and frontend is required.
 
+
=== Can't Start / Nothing in frontend logs ===
+
If you are having trouble getting started, and have tried setting the environment variable (0.25) to no effect, and/or the AirPlay page is not showing up in the frontend settings (0.26), and/or Bonjour information isn't showing up in your frontend console output, it is possible that AirPlay support wasn't enabled when your build of MythTV was compiled.
+
 
+
Of particular note is a peculiarity for Gentoo users:  'avahi' [http://en.wikipedia.org/wiki/Avahi_%28software%29][http://en.gentoo-wiki.com/wiki/Avahi] is a required dependency, yet the current MythTV ebuilds ignore both the 'airplay' and 'avahi' USE flags.  Instead, the 'raop' USE flag must be set to enable AirPlay support.
+
  
 +
Of particular note is a peculiarity for Gentoo users:  'avahi' [http://en.wikipedia.org/wiki/Avahi_%28software%29][http://en.gentoo-wiki.com/wiki/Avahi] is a required dependency, yet the current MythTV ebuilds ignore both the 'airplay' and 'avahi' USE flags.  Instead, the 'raop' USE flag must be set to enable AirPlay support.
  
 
=== Not seeing AirPlay device in iTunes or iOS device ===
 
=== Not seeing AirPlay device in iTunes or iOS device ===
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Bonjour uses port 5353 for UDP.
 
Bonjour uses port 5353 for UDP.
 
For Windows XP SP2 and later, check http://support.apple.com/kb/ts2235
 
For Windows XP SP2 and later, check http://support.apple.com/kb/ts2235
 
  
 
On Linux/FreeBSD, make sure the avahi daemons is running.
 
On Linux/FreeBSD, make sure the avahi daemons is running.
Line 153: Line 117:
 
When seeking on some online content, such as when using the YouTube application, may result in the frontend showing "Searching..." and become non-responsive.
 
When seeking on some online content, such as when using the YouTube application, may result in the frontend showing "Searching..." and become non-responsive.
 
You can usually interrupt it by stopping playback on the iPhone and restarting it.
 
You can usually interrupt it by stopping playback on the iPhone and restarting it.
 +
 +
 +
[[category:HOWTO]]

Latest revision as of 01:44, 5 December 2014

MythTV supports AirPlay for streaming audio, video and photos from Apple iTunes & iOS devices to MythFrontend. MythFrontend mimics most of the AirPlay functions of an AppleTV.

Important.png Note: AirPlay (and MythTV in general) do not support DRM encrypted videos such as those purchased via the Apple Store. Playback of such content will fail.

AirPlay was originally called "AirTunes" when it only supported streaming music. MythTV support was added in version 0.25 and substantially enhanced in 0.27.

Enabling AirPlay

AirPlay is a proprietary format and is encrypted...but the encryption key has been discovered which enables its use in open source applications such as MythTV.

When starting the frontend, you will get the following message in the log:

 RAOP Conn: Failed to read key from: /home/<user>/.mythtv/RAOPKey.rsa

You can obtain the key from the shairplay source. Copy the entire section:-

 -----BEGIN RSA PRIVATE KEY-----
 (and everything inbetween)
 -----END RSA PRIVATE KEY-----

Paste into a new file at /home/<user>/.mythtv/RAOPKey.rsa and restart your frontend.

The correct RSA private key will have the SHA-1 sum 7a07afcdf4cbb5653318a329906afe5367cb8b13. You can check this with the command

 shell> openssl rsa -in ~/.mythtv/RAOPKey.rsa -outform der | sha1sum

Or, on shells missing sha1sum, like OS X:

 shell> openssl rsa -in ~/.mythtv/RAOPKey.rsa -outform der | openssl sha1

Using AirPlay

iPhone or iPad

AirPlay icon

From http://support.apple.com/kb/HT4437

Connect your iPhone or iPad and your Apple TV [MythTV frontend, in our case] to the same Wi-Fi network.

iOS 7: Swipe up from the bottom of the screen to show the Control Centre. Tap the AirPlay icon and select from the available AirPlay devices.

iOS 6: On your iPhone or iPad, double-click the Home Button to display your recently used apps. Swipe your recently used apps twice from left to right until you see the icon. Tap the icon to display a list of available AirPlay devices.

Example Airplay selection screen from iPhone 5 running iOS 6.

If the AirPlay icon does not appear in the Control Centre, it may appear inside supporting applications. YouTube, Pandora, etc will show the AirPlay icon within the app if a supported target device (MythTV in this case) is detected on the network.

iTunes (Mac or Windows)

In iTunes, AirPlay is enabled by the same icon, which should appear in the lower right corner of the window.

No mirroring

Note that AirPlay Mirroring is not supported.

Troubleshooting

Can't Start / Nothing in frontend logs

Ensure mythfrontend is listening on a network-connected interface, especially if you see initial startup logs that imply AirPlay is active, but you can't get any further. If you have a combined backend/frontend system, you may have a local IP address specified in mythtv-setup -> General (e.g. 127.0.0.1 for IPv4 and ::1 for IPv6), which means mythfrontend isn't listening on any interfaces that are reachable from your local network. Usually, this can be solved simply by checking the "Link-local" box on the same mythtv-setup page, which instructs MythTV to listen on IPv6 addresses that are reachable on your local network. However, this requires that you have IPv6 enabled: check that at least one network-connected interface has an IPv6 address (e.g. "ip -6 addr").

AirPlay may also work without IPv6 so long as mythfrontend is listening on a network-accessible interface (e.g. 192.168.0.2). This is unclear, though. You can try setting the IP addresses specified in mythtv-setup to a network-accessible one, or else leave those fields blank to allow MythTV to choose sensible defaults.

After changing IP addresses, a restart of both the backend and frontend is required.

Of particular note is a peculiarity for Gentoo users: 'avahi' [1][2] is a required dependency, yet the current MythTV ebuilds ignore both the 'airplay' and 'avahi' USE flags. Instead, the 'raop' USE flag must be set to enable AirPlay support.

Not seeing AirPlay device in iTunes or iOS device

Make sure your firewall isn't blocking Bonjour request. Bonjour uses port 5353 for UDP. For Windows XP SP2 and later, check http://support.apple.com/kb/ts2235

On Linux/FreeBSD, make sure the avahi daemons is running. On Windows, that the mDNS service is running

A message like the following in your logs would show, you can then lookup the error code below

RAOPDevice bonjourregister.cpp:56 (Register) - Bonjour: Error: -65563

(taken from the freely available mDNSResponder source code)

   kDNSServiceErr_Unknown                   = -65537,  /* 0xFFFE FFFF */
   kDNSServiceErr_NoSuchName                = -65538,
   kDNSServiceErr_NoMemory                  = -65539,
   kDNSServiceErr_BadParam                  = -65540,
   kDNSServiceErr_BadReference              = -65541,
   kDNSServiceErr_BadState                  = -65542,
   kDNSServiceErr_BadFlags                  = -65543,
   kDNSServiceErr_Unsupported               = -65544,
   kDNSServiceErr_NotInitialized            = -65545,
   kDNSServiceErr_AlreadyRegistered         = -65547,
   kDNSServiceErr_NameConflict              = -65548,
   kDNSServiceErr_Invalid                   = -65549,
   kDNSServiceErr_Firewall                  = -65550,
   kDNSServiceErr_Incompatible              = -65551,  /* client library incompatible with daemon */
   kDNSServiceErr_BadInterfaceIndex         = -65552,
   kDNSServiceErr_Refused                   = -65553,
   kDNSServiceErr_NoSuchRecord              = -65554,
   kDNSServiceErr_NoAuth                    = -65555,
   kDNSServiceErr_NoSuchKey                 = -65556,
   kDNSServiceErr_NATTraversal              = -65557,
   kDNSServiceErr_DoubleNAT                 = -65558,
   kDNSServiceErr_BadTime                   = -65559,  /* Codes up to here existed in Tiger */
   kDNSServiceErr_BadSig                    = -65560,
   kDNSServiceErr_BadKey                    = -65561,
   kDNSServiceErr_Transient                 = -65562,
   kDNSServiceErr_ServiceNotRunning         = -65563,  /* Background daemon not running */
   kDNSServiceErr_NATPortMappingUnsupported = -65564,  /* NAT doesn't support NAT-PMP or UPnP */
   kDNSServiceErr_NATPortMappingDisabled    = -65565,  /* NAT supports NAT-PMP or UPnP but it's disabled by the administrator */
   kDNSServiceErr_NoRouter                  = -65566,  /* No router currently configured (probably no network connectivity) */
   kDNSServiceErr_PollingMode               = -65567,
   kDNSServiceErr_Timeout                   = -65568

Audio glitched in OS X

When using MythFrontend on OSX, you may not experience perfect audio playback, this issue is linked to a bug with IPv6 in the Qt software framework used by myth (Bug 25634)

Seeking on some streaming content hang the frontend

When seeking on some online content, such as when using the YouTube application, may result in the frontend showing "Searching..." and become non-responsive. You can usually interrupt it by stopping playback on the iPhone and restarting it.