Knots

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= About Knots =
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#REDIRECT [[Knots2]]
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[[Image:Knots.png|52px|left]]
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Knots is a feature rich GPLv2 Video Streaming Application for Linux, FreeBSD and OS X by Janne Mäkinen. It's written in ruby and uses vlc 0.9.6+ to do the transcoding. Knots can be configured to stream Video Files (any format/codec supported by vlc), DVB-Broadcasts, Custom Playlists or any other media to a Knots-Client on a N700/N8x0 or to any other computer, via the Knots Web-Frontend.
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= Features =
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* Auto Transcode & Stream Videos to a Knots - Client or to the web-frontend.
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* watch Live TV (DVB) with vlc or VDR (incl. EPG & Timer Management)
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* Playlist Support (worldTV99, ect.)
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* Automatic Subtitle fetching for Movies
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* Automatic Thumbnail Generation
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* integrated Search Function
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= Knots Server =
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=== Install ===
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Knots Server can be installed on any *nix based OS like Gnu/Linux, BSD & OSX.
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==== Ubuntu ====
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* Enable the Multiverse & Universe software sources, and open a root terminal (sudo -s), to install the Ruby Dependencies
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''NOTE: This are my currently installed ruby1.8 packages, please remove unneeded packages if they are not required for knots''
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apt-get install libactiveldap-ruby1.8 libactivesupport-ruby1.8 libalgorithm-diff-ruby1.8 libao-ruby1.8 libart2-ruby1.8 libatk1-ruby1.8 libbreakpoint-ruby1.8 libbsearch-ruby1.8 libbuilder-ruby1.8 libbz2-ruby1.8 libcairo-ruby1.8 libcgikit-ruby1.8 libcmd-ruby1.8 libcmdparse2-ruby1.8 libdaemons-ruby1.8 libdbm-ruby1.8 libgconf2-ruby1.8 libgdbm-ruby1.8 libgdk-pixbuf2-ruby1.8 libgettext-ruby1.8 libglade2-ruby1.8 libglib2-ruby1.8 libgnome2-ruby1.8 libgnomecanvas2-ruby1.8 libgtk2-ruby1.8 libldap-ruby1.8 liblog4r-ruby1.8 libmmap-ruby1.8 libmocha-ruby1.8 libncurses-ruby1.8 libopenssl-ruby1.8 libpango1-ruby1.8 libreadline-ruby1.8 libredcloth-ruby1.8 libruby1.8 libruby1.8-extras libsqlite3-ruby1.8 libtcltk-ruby1.8 libuconv-ruby1.8 libxml-parser-ruby1.8
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* get vlc and a 'unrestricted' ffmpeg build
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apt-get install vlc-nox vlc-data libvlccore0 libvlc2 ffmpeg
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If you have X on your Knots-Server you can also install the packages "vlc" and "vlc-plugin-pulse" to get a GUI and PulseAudio Output (default ubunu Sound Server) for the vlc Player.
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now install these unrestricted ffmpeg libaries (they will remove the restricted builds, if installed)
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apt-get install libavcodec-unstripped-51 libavdevice-unstripped-52 libavformat-unstripped-52 libavutil-unstripped-49 libpostproc-unstripped-51 libswscale-unstripped-0
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* download and install Knots - Server
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Still in the root terminal change to the directory where you want to keep the Server Files (in this example I use /opt/kserver , change the path accordingly) and download & extract Knots - Server :
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cd ~/work
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wget http://nakkiboso.com/knots/dl.php?file=server
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tar xvzf knots_server.tar.gz
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That's it! knots is installed under /opt/kserver. Go to First Run now to configure it.
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==== Mac OSX ====
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'''ToDo''' see http://nakkiboso.com/knots/doc.php
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=== First run === 
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Knots-Server keeps its config at the folder ~/.config/knots . It is located under the home directory of the user who runs the following setup script, so '''do NOT run ./scripts/setup from a root terminal''' !
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su yourusername
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cd /opt/kserver
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./scripts/setup
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The Script will ask you various questions about your installation and has reasonable default settings. So if you are not sure, accept the default settings.
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* Server name : Enter a custom Name for your Knots Server
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* Select interface to bind to: choose on which network interface Knots to bind to
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* Is all your media under one directory? : if you keep all you video files under one Directory answer yes here.
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* Full path to your media files: Full path to your video archive (e.g. /media/video)
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* Do you have the program Video Disk Recorder (VDR) with streamdev-plugin installed? : Knots can interact nicely with VDR. If you have a VDR running somewhere on your local home network, or on the same computer as knots, answer yes here . The next VDR specific Questions are about the used VDR OSD & File System Charset (different from UTF-8 in VDR releases < 1.7) and you can also supply a Folder where your local VDR Recordings are stored.
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You can accept the default values for any other Questions asked by the setup script.
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After the script has gathered the necessary info it shows you the location of the generated config.yaml file:
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Configuration saved to /home/''yourusername''/.config/knots/config.yaml.
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You can edit this file with a text editor for more advanced settings.
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You can now start the server with './knots start'
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=== config.yaml ===
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If you want to customize your configuration File, open it in a text editor. The full path to the configuration file was printed to the terminal when you ran './scripts/setup'
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==== Configuration Options ====
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* cache: You can enable cache for one (or more) of your categories. Keep in mind that it's not wise to Cache the "Latest Videos" or VDR categories.
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* vlc: This section configures vlc. You can customize the port_range for vlc to your Network. Keep in mind that you need to forward those ports by your router (or Firewall) to the Knots-Server if you want the Web-Frontend to be remote accessible.   
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* vdr: You can connect as many VDR's as you wish to knots. All you need to create is another vdr2, vdr3 ... Configuration and adjust the IP - addresses, streamdev_ports & svdrp_ports to fit your configuration.
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* server: you can configure some general Server settings in this section. If you need more verbose logging, you can add 'log_level: 2' (without the quotes) to this section, to generate much more debug output in the logfile.
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* media: adjust the stream able Media Container Formats, and the full patch to your ffmpeg installation
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* transcoding: Knots ships some transcoding presets (Video Dimensions, target Bitrate, Codec) , that should be optimal for your Tablet (you can change to another Preset on the fly from the Knots-Client running on your Tablet). If you want to use the Web-Frontend remote, you might want to set smaller Dimensions in the flash profile (see example Configuration below)
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* categories: This Section lists your Categories. Use this names for the 'cache' settings
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==== Example Configuration ====
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for Knots-Server 0.4.1 with local VDR 1.6.0 (VDR using german charset ISO-8859-1):
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---
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cache:
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  - Video
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  - Recordings
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vlc:
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  startup_wait: 5
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  tmpdir: /var/tmp
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  remote_play_options:
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    freetype-effect: 2
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    vout: xvideo
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    freetype-fontsize: 12
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    volume: 100
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    fullscreen: ""
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  path: /usr/bin/vlc
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  resume_rollback: 5
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  port_range: 4214-4244
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vdr:
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  vdr1:
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    timer_interval_before: 0
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    address: 192.168.1.100
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    streamdev_port: 3000
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    svdrp_port: 2001
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    disable_epg: false
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    timer_interval_after: 0
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    charset: iso-8859-1
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    force_charset_conversion: false
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    disable_streamdev: false
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server:
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  log_level: 2
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  name: panta-rhei
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  remote_auth: false
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  port: 4212
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  os: linux
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  ip: 192.168.1.100
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  bind: eth0
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  vdr_charset: iso-8859-1
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  service_discovery: 4212
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  force_update: false
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  auth_timeout: 60
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  local_auth: false
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  log_append: false
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media:
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  extensions: avi,mpg,mpeg,wmv,vdr,img,iso,mkv,vob,flv,mov,nuv,sh
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  ffmpeg_path: /usr/bin/ffmpeg
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  subtitles: sub,srt
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  avfs_extensions: tgz,gz,bz2,zip,rar,arj,uha,lha
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transcoding:
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  N800:
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    audio_format: mpga
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    resolution: 400x240
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    audio_channels: 2
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    audio_bitrate: 128
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    video_bitrate: 900
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    video_format: xvid
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  High:
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    audio_format: mp3
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    resolution: 608x256
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    audio_channels: 2
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    audio_bitrate: 128
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    video_bitrate: 900
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    video_format: xvid
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  Flash:
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    stream_extension: flv
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    audio_format: mp3
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    resolution: 400x300
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    audio_rate: 44100
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    audio_channels: 2
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    audio_bitrate: 128
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    video_bitrate: 1000
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    mux: ffmpeg{mux=flv}
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    video_format: FLV1
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categories:
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  TV:
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  - vdr1
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  Recordings:
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  - /media/recordings/vdr
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  Video:
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  - /media/video
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=== Extras ===
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* install wordtv99
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./scripts/install_worldtv99
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./knots restart
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* Live-TV (DVB) on Linux without VDR
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Scan your channels with dvb-scan using the vdr-format and then create an xml-playlist from it.
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(dvb-)scan -o vdr /usr/share/doc/dvb-utils/examples/scan/dvb-t/your_city > /tmp/channels.conf ./scripts/create_dvb_playlist /tmp/channels.conf
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./knots restart
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You may need to edit ~/.config/knots/dvb.xml to make it work with your dvb-card.
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* Converting non-utf-8 filenames
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If you for example have german umlauts that are iso-8859-1 in your filenames, libxml fails to parse them. You can convert them to utf-8 easily (but use at your own risk):
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./scripts/fix_filenames
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* Sound in Flash-video
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Flash-video (flv) requires mp3 -support. Make sure your ffmpeg is compiled with libmp3lame-support.
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=== Update Knots ===
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'''Server:'''
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./knots stop
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./scripts/update
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./knots start
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'''Client:'''
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Connect to your Knots-Server and select 'Check for updates' from the menu. Knots will transfer the updated Package to your tablet automatically and start the Application Manager to install it.
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= Knots Client =
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=== Install ===
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==== Ruby for Maemo ====
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Add Repository:
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Catalogue Name: Ruby1.8 for Maemo
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Web address: http://stage.rubyx.co.uk/maemo/
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Distribution: diablo
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Components: user
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Open a terminal & change to root:
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apt-get install libhildon1-ruby1.8 libgconf2-ruby1.8 libconic-ruby1.8 ruby1.8 libosso-ruby1.8
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wget http://stage.rubyx.co.uk/projects/ruby-maemo/packages/maemo4/armel/libxml2-ruby1.8_0.9.7-0maemo1_armel.deb
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dpkg -i libxml2-ruby1.8_0.9.7-0maemo1_armel.deb
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==== Knots Client ====
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Open a terminal & change to root:
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wget http://nakkiboso.com/knots/dl.php?file=client
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dpkg -i knots_*.deb
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=== Client Settings ===
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'''Menu Functions:'''
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* Server Scan: Automatically search and connect to a knots Server in the local LAN
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* Manual Connection: Specify the IP & Port of a Knots Server manually
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* Offline Mode: Disconnect from a Knots Server, and Display local Media Files
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* Preferences: see below
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* Refresh: Reload current Directory or Refresh list of local files
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* Go to Root: Retun to the Start - Folder
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* Switch Transcoding Profile: Use the next predefined Transcoding profile
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* Switch Theme: Switch Knots theme (no restart required)
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* Remote Playback: Play a media File directly on the Server
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* Check for Updates: Searches for available updates & installs if found.
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'''Client Preferences:'''
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* Language: Set Application Language
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* Language for Subtitles: Set Language for Subtitles
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* Cache: Buffer in KB. 128 is a good starting point for a stable wlan
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* Local Directories: Knots scans these directories for Media when switched to Offline Mode.
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* Join split Videos: Automatically join split videos (e.g. 001.vdr & 002.vdr)
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* Show Screenshots: generate random Screenshots of Videos
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=== Usage ===
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The Knots Client is designed to be totally thumb controlled, and is also including gesture-support. Most of it's functions are very intuitive to use and self - explaining. The Start Screen gives an Overview of you defined Categories and has an entry to show unfinished Videos as well as the 10 latest additions to the Server.
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If you want to watch a video on the way, you can right-click on any video file in your Archive and Knots will put the file on a ''Transcoding List''. If you change to this transcoding list (with a click on the left Cursor key) and hit the ''start'' button knots will automatically encode the video in the currently selected profile and transfer the file to your tablet. The save-location can be customized in the Client Preferences Window.
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If you configured Knots to connect to a VDR, you can browse the Channellist (you also get the EPG), Stream Live-TV, watch your Recordings and add, activate, deactivate or delete Timers for VDR. This makes knots the most feature complete "streaming client" for VDR. 
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'''ToDo''' much more usage tips :)
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=== Offline Mode ===
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In Offline Mode, the Knots Client is a thumb friendly mplayer frontend (with gestures support to change the volume, seek,ect ), that will automatically scan your tablet for media files, and display them in the GUI. You can add them to a playlist, or start playing them directly
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Playlist support in offline mode can be used to load a VDR - streamdev channels.m3u Channel list to watch Live TV via VDR if no Knots Server is available.
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You can sort playlist entries with the up / down buttons. A long click (2 seconds) pushes the selected entry to the beginning / end of the playlist. A long Click on the play button will start the selected entry directly.
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= Web Frontend =
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Point your desktop's browser to the Knots server address, followed by it's port. If you don't know what it is, check the the logfile or start the server with
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./knots stick
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It will print out the address on the first line. If you use the bundled Flash-profile, it will try to open the video in the browser. If you select a different transcoding-profile, it prints out a link to a playlist. You can then open this playlist with your favorite video player.
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=== Authentication ===
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To secure your installation, enable Remote-Authentication for Knots:
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Edit ~/.config/knots/config.yaml and set 'auth_remote: true'
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* To Add / Remove a user:
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./scripts/auth add username password
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./scripts/auth delete username
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* Add a client to / Remove client from whitelist
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./scripts/auth add client_id
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./scripts/auth delete client_id
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You can find your clients id from the logfile (~/.config/knots/knots.log)
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=== Router Configuration ===
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If you want Remote Access to your knots Server, you need to open & forward the ports 4212 - 4250 from your Router to the IP of your Knots Server.
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= Bugs & Requests =
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'''ToDo'''
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Latest revision as of 15:52, 29 October 2009

  1. REDIRECT Knots2
Retrieved from "http://wiki.maemo.org/Knots"