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Raspberry Pi FAQ

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Frequently Asked Questions XBMC running on the Raspberry Pi.

Contents


1 General FAQ

See also: XBMC all platforms FAQ for FAQs that apply to all versions of XBMC.

1.1 Installing XBMC on the Raspberry Pi

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The easiest way to install XBMC on an R-Pi is to use one of these pre-made OS/XBMC packages:

1.2 Is XBMC for Raspberry Pi different from normal XBMC?

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  • The current stable version of XBMC for Raspberry Pi is XBMC v13.2 Gotham. This is the same code that all of the other platforms (Linux, iOS, Mac OS X, Windows, etc) are using.

1.3 How do I find out what version of XBMC am I running?

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  • XBMC main menu > System > Lower submenu > System info. Note the build date.

1.4 Video and audio formats the Raspberry Pi can playback

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  • H.264 (up to High Profile) encoded videos are supported up to 1080P using hardware video decoding. Note: Hi10P will not work.
  • MPEG-4 encoded videos are supported up to 1080P using hardware video decoding. This includes XviD and recent versions on DivX (but not the older 3.xx DivX).
  • The Raspberry Pi Foundation offers additional video codec licenses for a few dollars. At the moment you can purchase MPEG-2 and VC1, both with support up to 1080P. Read below on how to enable these.
  • MJPEG, VP6, VP8 and OGG Theora are supported as GPU accelerated software decoders. These are limited to SD resolutions.
  • omxplayer does not support software decode of video.
  • dvdplayer can support software decode of SD resolutions of unsupported codecs like DivX 3, msmpeg and sorenson spark. Use context-menu and "play using dvdplayer"
  • DVD ISOs now default to using dvdplayer and menus should work fine
  • Software DTS audio decode was initially problematic, but works quite well in recent builds. TrueHD audio is CPU intensive and may require overclocking.

1.5 Video and audio output on the Raspberry Pi

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  • Video output via HDMI up to 1080P. The GUI is 1080p by default, but can be reduced in video settings without affecting video resolution.
  • Video output via the analog component video (RCA) jack will be in SD.
  • Analog audio output via the mini phone jack is supported.
  • Experimental I2S and USB audio is supported withusing paplayer (music) and dvdplayer (video). omxplayer only supports the on-board HDMI and analogue connections.
  • DTS and AC3 audio passthrough audio is supported (and recommended, as it will reduce CPU load on the R-Pi)

1.6 How about multichannel audio support?

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  • By default audio is downmixed to stereo.
  • If your receiver/TV supports DTS or AC3 passthrough then enable these in audio settings and you will get 6 channel audio.
  • Multichannel PCM audio is supported over HDMI. Note: not all receivers support this and toslink/optical will not.
  • Enable by setting the speaker configuration to suitable value (e.g. 5.1 or 7.1).
  • If your recevier does not support multichannel PCM, then leave this at 2.0. You will still get multichannel audio through passthrough.

1.7 Enabling additional video codecs

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You can buy additional video codecs (VC-1 - used in some bluray discs, and MPEG-2) from the Raspberry Pi Foundation online shop. After purchase the keys are emailed to you, looking like this (invalid keys used for example):

decode_MPG2=0x1cc591c7
decode_WVC1=0x8aa09876

In order to enable additional video codecs you should modify /boot/config.txt and add these lines literally. The method may vary per distribution:

  • Manual: Open /boot/config.txt with a text editor like nano or vi, and add the keys.
  • XBian: You can add/remote your keys using XBian-config. After reboot your keys will be entered and ready to use.
  • Raspbmc: Navigate to Programs -> Raspbmc Settings -> System Configuration -> MPEG2 codec license/VC1 codec key. Enter your keys with the onscreen keyboard then XBMC will prompt you to reboot. After reboot your keys will be entered and ready to use.
  • OpenELEC: Type mount /flash -o remount,rw to remount the boot partition in read/write mode. The file to edit is located in /flash/config.txt, and contains stubs for the license keys. Add the keys using nano or vi. There is also an unofficial add-on which can be used to enter the codec information.

1.8 Accessing media

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  • You can connect to media that's being shared from a computer, HTPC, or NAS device on your local network.
  • You can access media on the main SD card or from the USB ports (hard drives, USB stick drives, hubs, all supported).

1.9 Add-ons and skins

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  • XBMC for Raspberry Pi is a full version of XBMC and will be able to use all non-platform specific add-ons and skins. More feature rich (CPU demanding) skins might not run smoothly, so keep to "lighter" skins.
  • Recommended lite skins include: Confluence (default skin), Amber, Metropolis, Quartz, Quartz Reloaded, Slik, xTV-SAF. Aeon Nox 5 is usable on Gotham builds.

1.10 How to properly shutdown/disconnect

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  • It is not possible to use traditional "shutdown" on the Raspberry Pi. The only way to power it off is to disconnect the power.
  • ALWAYS select the shutdown command in XBMC before powering off the Raspberry Pi. Failure to do so can corrupt the XBMC library databases, other databases, or even other OS files.
  • Most users leave the Raspberry Pi on all the time, as it uses very little power (the cost of electricity for a year is about the price of a hamburger).

1.11 Remotes for Raspberry Pi

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See: Raspberry Pi#Remote controls

1.12 MySQL library sharing

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  • If you are using MySQL library sharing features, please note that your library will only sync with the Raspberry Pi if all your other XBMC instances are running the same version (how to check your version).

2 Troubleshooting

2.1 Getting more help with XBMC for Raspberry Pi

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2.2 Userdata folder and logs

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See How-to:Submit a proper bug report for bug reporting details and Debug log for how to post the debug log.
  • Userdata folder:
    • OpenELEC: /storage/.xbmc/userdata/
    • Raspbmc: /home/pi/.xbmc/userdata/
    • XBian: /home/xbian/.xbmc/userdata/
  • Debug log:
    • OpenELEC: /storage/.xbmc/temp/xbmc.log
    • Raspbmc: /home/pi/.xbmc/temp/xbmc.log
    • XBian: /home/xbian/.xbmc/temp/xbmc.log

2.3 Wrong language displayed in XBMC

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2.4 Raspberry Pi known issues

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  • In v13.0 there is a bug affecting all distros for the Pi where screen calibration settings won't save and get reset after a reboot.
  • DVD ISO playback is not expected to work well (there is experimental support with the hardware decoder in test builds).
  • FIXED in v13 Navigation sounds (clicks and such when you move around in the GUI) are not supported. Sound from music and videos are unaffected by this.
  • FIXED in v13 Playback of music from a USB CD drive might not work.
  • FIXED in v13 Fast forward/rewind do not, but "stepping" back/forward does work. In other words, the FF/RW buttons don't work on the On Screen Display, but you can go back and forward using left/right arrows (or whatever you map to stepping back/forward).

2.5 Performance: video buffering, stuttering, choppiness

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  • Use a lightweight skin such as the default Confluence, Amber, Quartz, Bellow, or xTV-SAF.
  • Turn off RSS feeds and any scrolling text options for your skin.
  • You can also try to use a combination of SD and fast USB drive for your XBMC/Kodi install, but recent improvements to the software make it so that even just using a good SD card is about as fast as using a fast USB drive.
  • Avoid using wifi. If you do use wifi, use a wifi adapter that contains two antenna (either internally or externally). Otherwise, stick to wired ethernet, local USB drives, or ethernet-over-power devices (like Homeplug, etc).
  • Try using NFS file shares instead of SMB file shares.
  • Overclock. Most (but not all) Pi's can be overclocked to some point, as long as they have a good power supply. All Raspberry Pi's are clocked at a speed that will work by default, but when the CPUs are made they can sometimes handle a faster speed without crashing. This depends on each individual unit, and there's no universal setting that will work for everyone (except for the default speed that you get without overclocking). Try various overclocking settings and run XBMC/Kodi for a while and see if it's stable. If one group of overclocking settings causes crashes, try a group of settings that are lower than that. For more information about this check out this forum thread: http://forum.xbmc.org/showthread.php?tid=199272
  • For smoother video playback enable "Adjust display refresh rate to match video" from playback settings
  • Make sure the video is using H.264 (up to High Profile. Hi10P will not work) or MPEG-4, or, if a codec was purchased and enabled, MPEG-2 or VC-1.
  • Passthrough is recommended as it lowers CPU usage for DTS and AC3. Use audio passthrough if your TV/receiver supports it.
  • To determine which audio passthrough formats your HDMI-connected TV supports, you can log in to your chosen distribution, via SSH, and run this command: /opt/vc/bin/tvservice a (on OpenELEC: tvservice -a).
  • Some additional advanced tips for speeding up boot times. Editor note: Some of this can likely be broken up into individual bullet points for this list, but I haven't examined any of this in detail yet. I'm not sure which ones only improve boot time and which ones improve actual performance once already booted. If anyone wants to take a whack at this, please do. http://forum.xbmc.org/showthread.php?tid=201354
  • For locally connected drives containing videos and music, the format of the drive can have an impact on read and write speeds. For example, NTFS tends to be much slower on any Linux-based system than the more native EXOFS formats (ext2, ext3, etc).
  • If you use MySQL then you will want to make sure your images are pre-cached using the Texture Cache Maintenance utility tool. Local libraries typically don't need this as their images are cached when videos are scanned in.
  • Organizing your movies in single folders for each movie, rather than all movies in one folder, can improve library scanning time. The individual folders reduce the time it takes for XBMC/Kodi to look for supporting media like external subtitles, making browsing and playback a little faster as well. You might also want to consider pre-scraping the meta data using a Library manager to reduce the time it takes to scan in both movies and TV shows.

2.6 Memory usage (especially with 256M Pi)

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  • gpu_mem should be set to 128M minimum on Gotham. On a 512M Pi it may be worth increasing this if you are running heavy skins, using dvdplayer for HD videos or if you want to increase the default fanart resolution or colour depth. 256M should be more than enough.
  • A 256M Pi is quite short on memory. Be careful with running other apps in the background (e.g. torrents) or installing add-ons that consume memory.
  • The default cachemembuffersize is too high for a 256M Pi. Reduce it in advancedsettings to 2097152 (or use 0 to cache to sdcard).
  • Reducing the "GUI resolution limit" (e.g. to 720p) in settings/system/video will save memory. Video will still play at full resolution (e.g. 1080p).
  • Enabling "higher colour depth artwork" will use more memory. It should be disabled on 256M Pi.
  • Reducing imageres/fanartres will reduce memory usage.

2.7 TV is not detected unless powered on first

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  • Some TVs/receivers only report their capabilities (EDID) through HDMI when powered on before the Pi.
  • If TV doesn't get the right resolution or CEC doesn't work when Pi is powered before the TV/receiver then you can:
  • Run: sudo tvservice -d edid.dat (after booting with TV/receiver powered on first)
  • copy the edid.dat to the FAT partition (/boot on raspbmc and /flash on openelec)
  • and add to config.txt: hdmi_edid_file=1 and hdmi_force_hotplug=1
  • Note: if you change TV/receiver or use a different HDMI input you should capture a new edid.dat file
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