VLS user guide
Contents
1. BEGIN VideoInputName Device device Type js type END VideoInputName is the name of the video input you want to configure Device is the path of the MPEG encoding card you want to read from default is dev video Type is either Mpeg2 PS or Mpeg2 TS depending on your device configuration default is Mpeg2 PS Example for a Hauppauge WinTV PVR 250 card BEGIN pvr Device dev video0 Type Mpeg2 PS END To configure a dvb input add a section in the following format BEGIN DvbInputName DeviceNumber devicenumber SendMethod ET END DvbInputName is the name of the dvb input you want to configure Set SendMethod to 0 if you to stream the complete DVB stream and set it to 1 if you only want to stream the MPEG audio and video streams default is 0 DeviceNumber is the number of the DVB device you want to read from read from dev ost dvr devicenumber default is The dvb configuration file is defined by the driver You can find it in HOME dvbrc for dev dvb adapterO or in SHOME dvbrc Xfor dev dvb adapterX Example BEGIN dvbl DeviceNumber 0 TrickPlay normal END 15 Chapter 4 Configuration Section Channels In this section you can define the channels outputs you want to use For each channel write a line in the following format ChannelName Type This adds a channel named ChannelName the type of whi2. Append no D The client is on the same host as the server unicast towards clientl unicast towards client2 Domain inet6 DstHost 3ffe ffff 2 12 42 DstPort 1234 D multicast streaming multicast streaming in file output in IPv6 IPv6 17 Chapter 4 Configuration Caution If you use Windows you should specify the SrcHost and SrcPort fields For example BEGIN clienti The client is on the same host as the servdr SrcHost 192 168 1 1 4 IP of VLS SrcPort 1242 Source port the value is not important DstHost 192 168 1 2 IP of the client DstPort 1234 END Programs Configuration As explained before you must define the programs Each one is a MPEG stream a file for example To do this you must add an Input section in your v1s cfg file Each Input section must have the following syntax BEGIN Input FilesPath path ProgramCount count END path is the path where your MPEG files are located by default it is the current directory count is the number of programs defined 0 by default For each program you want to define you must add a section with the following format BEGIN number Name name Type type FileName file Devic device END e number is the program number the first program has number 1 the second number 2 and so on name is the program name by which you will tell VLS
3. initially VideoLAN Client which can be used as a server to stream MPEG 1 MPEG 2 and MPEG 4 files DVDs and live videos on the network in unicast or multicast or used as a client to receive decode and display MPEG streams under multiple operating systems Here is an illustration of the complete VideoLAN solution Figure 1 1 Global VideoLAN solution Streamers Clients VLC for MacOS X Video File DVD P VLC for GNU Linux Windows MacOS X Unix GNU Linux Acquisition card N with soft x Network encoding P VES VLC for MPEG hardware L S U j wein encoding card T GNU Linux Windows Satellite v 5 Set Top Box i tal Vol E Wireless t WA z Connection UE na un VLC for Web server Darwin Streaming Server ca Familiar Linux MPEG4IP More details about the project can be found on the VideoLAN Web site http www videolan org Chapter 1 Introduction VideoLAN software VLC VLC works on many platforms Linux Windows Mac OS X BeOS BSD Solaris Familiar Linux Yopy Linupy and QNX It can read MPEG 1 MPEG 2 and MPEG 4 DivX files from a hard disk a CD ROM drive e DVDs and VCDs from a satellite card DVB S e MPEG 1 MPEG 2 and MPEG 4 streams from the network sent by VLS or VLC s stream output VLC can also be used as a server to stream MPEG 1 MPEG 2 and MPEG 4 DivX files DVDs from an MPEG encoding card to e one machine i e
4. to one IP address this is called unicast e a dynamic group of machines that the clients can join or leave i e to a multicast IP address this is called multicast in IPv4 or IPv6 To get the complete list of VLC s possibilities on each plateform supported see the VLC features page http www videolan org vlc features html Note VLC doesn t work on Mac OS 9 and will probably never do VLS VLS can stream e an MPEG 1 MPEG 2 or MPEG 4 files stored on a hard drive or on a CD e a DVD located in a local DVD drive or copied on a hard disk e a Satellite card DVB S or a digital terrestial television card DVB T e an MPEG encoding card to e one machine i e to one IP address this is called unicast e a dynamic group of machines that the clients can join or leave i e to a multicast IP address this is called multicast in IPv4 or IPv6 A Pentium 100 MHz with 32 MB of memory should be enough to send one stream on the network When streaming a lot of videos stored on a hard drive the actual limitation is not the processor but the hard drive and the network connection VLS works under Linux and Windows To get the complete list of VLS s possibilities on each plateform supported see the streaming features page http www videolan org streaming features html What Chapter 1 Introduction Mini SAP server You can add a channel information service based on the SAP SDP standard to the VideoLAN solution The mi
5. E E TET E E O E E 12 General StIUCLUIE n irion o ea EREA RE EE N E E eee A EE A a A EEA 12 Writing A718 CEG aoei ri aries e e oak oie RN E onto vaca ROEE ee EEES be vi ne en VEA its 12 S R nning VES AEE AT ETT A A ETA AS ENEE E AE AS EAE TT 20 Launching VES eeii ah hive ei E oie EE ne Mes ERT eta E E EEEE EAEE 20 Using the telnet interface eoo eee ea eer prior ER ER DRE RE Sgt 20 Interface commands eit oe fran ein nn de eee bod reb ite teet eter Pese eb cede rete eee eee eT 21 A GNU General Public License ssssecsessrsessssessssessssessssesessesesesseseesessssssssassssesssesessesesessesessesessessssessssasessesesesseseesesees 23 Preamble TERMS AND CONDITIONS FOR COPYING DISTRIBUTION AND MODIFICATION eene 23 How to Apply These Terms to Your New Programs sense 27 iii Chapter 1 Introduction What is the VideoLAN project Overview VideoLAN is a complete software solution for video streaming developed by students of the Ecole Centrale Paris http www ecp fr and developers from all over the world under the GNU General Public License http www gnu org copyleft gpl html GPL VideoLAN is designed to stream MPEG videos on high bandwidth networks The VideoLAN solution includes e VLS VideoLAN Server which can stream MPEG 1 MPEG 2 and MPEG 4 files DVDs digital satellite channels digital terrestial television channels and live videos on the network in unicast or multicast e VLC
6. For example if a patent license would not permit royalty free redistribution of the Program by all those who receive copies directly or indirectly through you then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program If any portion of this section is held invalid or unenforceable under any particular circumstance the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims this section has the sole purpose of protecting the integrity of the free software distribution system which is implemented by public license practices Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system it is up to the author donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License Section 8 If the distribution and or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces the original copyright holder who places the Program under this License may add an explicit geograph
7. Microsoft Windows XP version 5 1 2666 lt C Copyright 1985 2681 Microsoft Corp C Documents and Settings Administrateur gt Note Under Windows you need to be in the directory where the program is installed to run it Linux Unix Open a terminal Figure 1 3 Linux X terminal In the documentation we adopt the following conventions for the Unix commands commands that should be typed as root have a prompt command to be typed as root commands that should be typed as a regular user have a prompt o command to be typed as regular user Chapter 1 Introduction Mac OS X Go to Applications open the folder Utilities and double click on Terminal Figure 1 4 Mac OS X terminal e00 Terminal ttyp1 Last login Tue May 6 20 36 52 on ttyp1 Welcome to Darwin thedj pjotr ll ir Note Under Mac OS X you need to be in the directory where the program is installed to run it and start the command with BeOS In the deskbar go to Application and then Terminal Figure 1 5 BeOS terminal Termina Edit Settings Welcome to the BeOS shell cd Desktop vlc 0 5 4 cvs vle vvv colorff Chapter 1 Introduction Note Under BeOS you need to be in the directory where the program is installed to run it and start the command with JI Chapter 2 Installing VLS Installing VLS Windows Download the ZIP file from the VLS Windows download page http www v
8. ROGRAM IS LICENSED FREE OF CHARGE THERE IS NO WARRANTY FOR THE PROGRAM TO THE EXTENT PERMITTED BY APPLICABLE LAW EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND OR OTHER PARTIES PROVIDE THE PROGRAM AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED 26 Appendix A GNU General Public License WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU SHOULD THE PROGRAM PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR OR CORRECTION Section 12 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER OR ANY OTHER PARTY WHO MAY MODIFY AND OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE BE LIABLE TO YOU FOR DAMAGES INCLUDING ANY GENERAL SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program and you want it to be of the greatest possible use to the public the best way to achieve this is to make it free s
9. System There are several types of MPEG ES PS and TS When you play an MPEG video from a DVD for instance the MPEG stream is actually composed of several streams called Elementary Streams ES there is one stream for video one for audio another for subtitles and so on These different streams are mixed together into a single Program Stream PS So the VOB files you can find in a DVD are actually MPEG PS files But this PS format is not adapted for streaming video through a network or by satellite for instance So another format called Transport Stream TS was designed for streaming MPEG videos through such channels How can I use VideoLAN Documentation The user documentation of VideoLAN is made up of 4 documents the VideoLAN HOWTO This document is the complete guide of the VideoLAN streaming solution It will give you practical examples to set up your streaming solution the VLC user guide This document is the complete guide for VLC the VLS user guide This document is the complete guide for VLS The VideoLAN FAQ This document contains Frequently Asked Questions about VideoLAN Chapter 1 Introduction The latest version of these documents can be found on the documentation page http www videolan org doc User support If you have problems using VideoLAN and if you don t find the answer to your problems in the documentation please look at the online archive of the mailing lists http www via ecp f
10. VLS user guide Cyril Deguet Alexis de Lattre VLS user guide by Cyril Deguet and Alexis de Lattre Copyright 2002 2004 the VideoLAN project This document is the complete user guide of VLS Permission is granted to copy distribute and or modify this document under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License or at your option any later version The text of the license can be found in the appendix GNU General Public License Table of Contents 1 Introduction scssssssssrsrsersrsessrsessrsesssseserscsesersesensessrsessssessssesesscsesecsesessesensesenseseseesenessesecsssecsssessasensesensecsssssesecsesesseseseeses 1 What is the VideoL AN project 7 iiienihainsenmatennaminmndanatensnmnenieninnstainiithiinin tintin 1 Whats a codec siet eibi teet te t RU S RE ri ete te HE RE RS EU ANR hi eee 3 How can Tuse VideoLAN ts nn emi retient eie eere ene deans e t ERR derer TN 3 Command Tine usag es ipte He eite t e eee pee tet nee e aee e te e 4 Sra pcr I E ca eds nee 8 Installing V ES ee ette dete ree He dpt tp et er Hee dedita dte ea e Bin onc er Rs 8 Uninstalling VES e nn nement nt nn nee Saad ste epee al esas Iau tn tt en 9 3 Overview and basic CONCEPTS RR 10 VES structur cereo een hp te PO EH eer ep A C epa esp Er e YI PSP SE Er Ed 10 Adiinstration interlace niron Ae ER 11 Pe TEAOR E EAEE
11. accept this License since you have not signed it However nothing else grants you permission to modify or distribute the Program or its derivative works These actions are prohibited by law if you do not accept this License Therefore by modifying or distributing the Program or any work based on the Program you indicate your acceptance of this License to do so and all its terms and conditions for copying distributing or modifying the Program or works based on it Section 6 Each time you redistribute the Program or any work based on the Program the recipient automatically receives a license from the original licensor to copy distribute or modify the Program subject to these terms and conditions You may not impose any further restrictions on the recipients exercise of the rights granted herein You are not responsible for enforcing compliance by third parties to this License 25 Appendix A GNU General Public License Section 7 If as a consequence of a court judgment or allegation of patent infringement or for any other reason not limited to patent issues conditions are imposed on you whether by court order agreement or otherwise that contradict the conditions of this License they do not excuse you from the conditions of this License If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations then as a consequence you may not distribute the Program at all
12. c License applies to most of the Free Software Foundation s software and to any other program whose authors commit to using it Some other Free Software Foundation software is covered by the GNU Library General Public License instead You can apply it to your programs too When we speak of free software we are referring to freedom not price Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software and charge for this service if you wish that you receive source code or can get it if you want it that you can change the software or use pieces of it in new free programs and that you know you can do these things To protect your rights we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights These restrictions translate to certain responsibilities for you if you distribute copies of the software or if you modify it For example if you distribute copies of such a program whether gratis or for a fee you must give the recipients all the rights that you have You must make sure that they too receive or can get the source code And you must show them these terms so they know their rights We protect your rights with two steps 1 copyright the software and 2 offer you this license which gives you legal permission to copy distribute and or modify the software Also for each author s protection and ours we want to mak
13. ch is Type Type must be either network or file Like inputs channels must be configured in their own section Example BEGIN Channels localhost network client1 network client2 network multicastl network multicast2 network localfile file END Channels configuration For each channel declared in the Channels section you must add a section with the same name as the corresponding channel The syntax of such a section depends on the type of the corresponding channel To configure a network channel add a section in the following format BEGIN NetChannelName Domain Domain Typ Type SrcHost SourceHost SrcPort SourcePort DstHost DestHost DstPort DestPort TT MEL Interface Interface END e NetChannelName is the name of the network channel you want to configure Domain is either inet4 if you use IPv4 addresses or inet6 if you use IPv6 default is inet4 Type is either unicast broadcast or multicast default is unicast depending on what you want to do and on your DstHost address e SourceHost is the IP address or DNS name from which VLS will send the stream e SourcePort is the UDP port from which the stream will be sent DestHost is the IP address or DNS name to which the stream will be sent DestPort is the UDP port to which the stream will be sent default is 1234 TTL is an optio
14. chen Sie configure disable dvd e if you want a VLS with DVD support do configure e if you want a VLS with DVB support do configure enable dvb with dvb PATH TO DVB DRIVERS with libdvb PATH TO LIBDVB Then compile and install 9 make make install You can also do a make uninstall make clean or make distclean as needed Uninstalling VLS Windows Go to the Control Panel click on Add and remove programs select VLS and click on Modify Remove and follow the steps to uninstall the program If you compiled VLS from sources Go to the directory containing VLS sources and run make uninstall Then you can remove the VLS sources Chapter 3 Overview and basic concepts VLS structure From a user s point of view VLS can be divided into four kinds of components e a manager inputs converters and channels Figure 3 1 VLS structure File DVD Device Network File Administration interface Input The role of an input is to read MPEG streams from a given source file DVD DVB card device and feed the right converters with these streams An input may be able to read several streams which are called programs There are several kinds of inputs the local input which can read videos from files or DVDs the video input which can read videos from MPEG encoding cards devices the dvb input which can read videos from DVB cards e the
15. ction you can define which inputs you want to use For each input you need add a line in the following format InputName Type This adds a input named InputName the type of which is Type As explained before there are several types of input local to play a stream from a file or a DVD video to play a stream from an MPEG encoding card e dvb to play a stream from a DVB card v4l to play a stream from a Video4Linux device Each input must be configured in its own section see next paragraph Example BEGIN Inputs locall local pvr video dvb1 dvb tuner val 14 Chapter 4 Configuration END Inputs configuration For each input declared in the Inputs section excepted local inputs you must add a section with the same name as the corresponding input For instance if you declared an input pvr there should be one section named pvr too The syntax of such sections depends on the type of the corresponding input To configure a local input you don t have to do anything Except when another trickplay strategy must be used BEGIN Locall ProgramCount 1 TrickPlay normal END Locall is the name of the local input you want to configure ProgramCount is the number of programs assigned to this input TrickPlay is the trickplay strategy that is used by this input default is normal To configure a video input add a section in the following format
16. e certain that everyone understands that there is no warranty for this free software If the software is modified by someone else and passed on we want its recipients to know that what they have is not the original so that any problems introduced by others will not reflect on the original authors reputations Finally any free program is threatened constantly by software patents We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses in effect making the program proprietary To prevent this we have made it clear that any patent must be licensed for everyone s free use or not licensed at all The precise terms and conditions for copying distribution and modification follow TERMS AND CONDITIONS FOR COPYING DISTRIBUTION AND MODIFICATION Section 0 This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License The Program below refers to any such program or work and a work based on the Program means either the Program or any derivative work under copyright law that is to say a work containing the Program or a portion of it either verbatim or with modifications and or translated into another language Hereinafter translation is included without limitation in the term modification Each licensee is addressed as you Activities other than copying d
17. e variables have a default value it means that you can ommit to declare these variables and then they will be given their default value Writing a vis cfg Here is an explanation of all the sections you can find in a v1s cfg Section VLS This section contains application wide settings LogFile name Name of VLS log file If left empty then no logging to files is done Default is vls log SystemLog disable enable Logging to the SystemLog Today only the SystemLog using syslogd is implemented compile with configure enable syslog 12 Chapter 4 Configuration Caution If VLS is started as visd then the following configuration is mandatory BEGIN Vis LogFile u SystemLog enabled ScreenLog disabled END ScreenLog disable enable Logging to the console Example BEGIN Vls LogFile vls log SystemLog disable ScreenLog enable END Section Groups In this section you can define some groups of users and which commands these users are allowed to execute For each group you want to define you must add a line in the following format groupname commandl command2 This adds a group groupname the users of which are allowed to execute command1 command2 and so on At the moment the available commands are help browse start suspend resume forward rewind stop shutdown logout Example BEGIN Groups monitor help browse logout mas
18. he moment you cannot ask the manager whether a given stream is being broadcasted but you will get an error message if you try to stop a stream that was not broadcasted Administration interface There are currently two ways to launch the streaming you can use the command line to give arguments at startup e or you can use the telnet interface to start stop pause the streaming whenever you want When using the telnet interface you must authenticate before typing any command because any user may not be allowed to execute any command this can be configured in the v1s cfg configuration file 11 Chapter 4 Configuration VLS reads its configuration from the v1s cfg configuration file which is supposed to be located in the current directory or in SYSCONF DIR videolan vls where SYSCONF_DIR is usr 10ocal etc if you built and installed VLS by hand or is etc if you installed the debian binary package To write a v1s cfg file use the one supplied with VLS as a start point General structure VLS configuration file vls cfg is divided into sections and each section may contain several variables BEGIN FirstSection Variablel valuel Variable2 value2 Barer END BEGIN SecondSection Variablel valuel Variable3 value3 3 25 END fase All section names variable names and values are not case sensitive There can be empty sections and subsections Comments must follow a character Som
19. her hand if you want to use the command line interface please see the VideoLAN HOWTO http www videolan org doc Using the telnet interface After VLS has been launched it opens a telnet server on the port 9999 by default You can connect to this server with the following command telnet localhost 9999 You should see something like Trying L27 20 0 1 4 Connected to vls Escape character is Videolan Server Administration System Login Then you must authenticate with a login password pair defined in v1s cfg When you have been successfully authenticated you should see a prompt like 20 Chapter 5 Running VLS admin vls gt gt Then you can type some commands which are explained in the next paragraph To log out type logout after the telnet prompt Interface commands help Usage help command Called with no argument help gives the list of all the commands available or not Called with one argument it gives details about how to use the specified command browse Usage browse input Called without argument browse gives all programs of inputs Called with one argument it only gives the programs of the specified input Each program is given with its status start Usage start lt program gt lt channel gt lt input gt loop rtp start launches the specified program of the specified input and broadcasts it through the specified channel The option loop makes the
20. ical distribution limitation excluding those countries so that distribution is permitted only in or among countries not thus excluded In such case this License incorporates the limitation as if written in the body of this License Section 9 The Free Software Foundation may publish revised and or new versions of the General Public License from time to time Such new versions will be similar in spirit to the present version but may differ in detail to address new problems or concerns Each version is given a distinguishing version number If the Program specifies a version number of this License which applies to it and any later version you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation If the Program does not specify a version number of this License you may choose any version ever published by the Free Software Foundation Section 10 If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different write to the author to ask for permission For software which is copyrighted by the Free Software Foundation write to the Free Software Foundation we sometimes make exceptions for this Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally NO WARRANTY Section 11 BECAUSE THE P
21. ideolan org streaming download vls windows html unzip it and run setup exe GNULinux amp Mac OS X Install the libraries Many libraries are needed for particular uses e libdvbpsi always needed libdvdcss if you want to be able to access encrypted DVDs libdvdread if you want to be able to stream DVDs libdvb if you want to be able to stream from a DVB card a satellite card or a digital terrestial TV card Download the libraries from the VLS sources download page http www videolan org streaming download vls sources html For each library uncompress configure unless for libdvb which doesn t have a configure compile and install tar xvzf library tar gz cd library configure make FE oe oe oe oe make install On GNU Linux check that the configuration file etc 1d so conf contains the following line usr local lib If the line is not present add it and then run ldconfig On Mac OS X run ranlib usr local lib a Install VLS Download the sources of the latest release get the file vis version tar gz from the VLS sources download page http www videolan org streaming download vls sources html Uncompress it and generate configure tar xvzf vls version tar gz 9 9 5 cd vls version Chapter 2 Installing VLS To get the list of configuration options do 9 configure help Then configure VLS e if you want a basic VLS without DVD support do m chten ma
22. istribution and modification are not covered by this License they are outside its scope The act of running the Program is not restricted and the output from the Program is covered only if its contents constitute a 23 Appendix A GNU General Public License work based on the Program independent of having been made by running the Program Whether that is true depends on what the Program does Section 1 You may copy and distribute verbatim copies of the Program s source code as you receive it in any medium provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty keep intact all the notices that refer to this License and to the absence of any warranty and give any other recipients of the Program a copy of this License along with the Program You may charge a fee for the physical act of transferring a copy and you may at your option offer warranty protection in exchange for a fee Section 2 You may modify your copy or copies of the Program or any portion of it thus forming a work based on the Program and copy and distribute such modifications or work under the terms of Section 1 above provided that you also meet all of these conditions 1 You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change 2 You must cause any work that you distribute or publish that in whole or in part contains or i
23. main module debug it means the file is MPEG ES VLS can t stream it using demux module using demux module using demux module Chapter 4 Configuration ts dvbpsi ps eg the sequence header of the video must repeat itself regularly which is often the case with MPEG 2 but very rare with MPEG 1 There is no easy way to know if the sequence header is repeated regularly Files with a vob extension are normally MPEG 2 files and files with mpg or mpeg extension are usually MPEG 1 files You can download this streamable MPEG 2 PS file for your tests presentation short vob ftp ftp videolan org pub videolan streams presentation presentation_short vob Note In order to play DVDs you need to compile VLS with DVD support which uses libdvdread and libdvdcss You will need read and write access rights to the DVD device Full example BEGIN Input FilesPath home videolan streams ProgramCount 4 END BEGIN 1 MPEG2 stream stored in home videolan streams Dolby vob Name dolby FileName Dolby vob Typ Mpeg2 PS END BEGIN 2 another file Name canyon FileName Dolby_Canyon vob Typ Mpeg2 PS END BEGI 3 DVD Name dvd Devic dev cdrom Type Dvd END BEGIN 4 DVD stored on a hard disk Name matrix Device mnt data matrix VIDEO_TS Type Dvd END 19 Chapter 5 Running VLS Launching VLS If you
24. n accord with Subsection b above The source code for a work means the preferred form of the work for making modifications to it For an executable work complete source code means all the source code for all modules it contains plus any associated interface definition files plus the scripts used to control compilation and installation of the executable However as a special exception the source code distributed need not include anything that is normally distributed in either source or binary form with the major components compiler kernel and so on of the operating system on which the executable runs unless that component itself accompanies the executable If distribution of executable or object code is made by offering access to copy from a designated place then offering equivalent access to copy the source code from the same place counts as distribution of the source code even though third parties are not compelled to copy the source along with the object code Section 4 You may not copy modify sublicense or distribute the Program except as expressly provided under this License Any attempt otherwise to copy modify sublicense or distribute the Program is void and will automatically terminate your rights under this License However parties who have received copies or rights from you under this License will not have their licenses terminated so long as such parties remain in full compliance Section 5 You are not required to
25. n useful only if Type is multicast default value is 0 You can use it to increase the TTL of your multicast packets if they have to cross several routers Interface is an option only supported under GNU Linux to force the stream to be sent through a given network interface eth1 for instance To use this option you must have super user permissions 16 To configure a file channel add a section in the following format B t m Chapter 4 Configuration Note SrcHost and SrcPort are optional if you don t set them VLS will not bind the socket GIN FileChannelName FileName Append D file append FileChannelName is the name of the file channel you want to configure file is the name of the file where the stream will be stored default is fileout ts append is either yes or no and indicates whether VLS will append the stream at the end of the file or rewrite it Example B t t t t ti ti l al E E GIN localhost DstHost DstPort D GIN client1 192 168 1 2 1234 DstHost DstPort D localhost 1234 GIN client2 GIN multicastl Type multicast DstHost 239 2 12 42 DstPort 1234 TTE 2 2 D EGIN multicast2 Domain inet6 Type multicast DstHost ff08 1 DstPort 1234 TTL 12 D GIN localfile FileName stream ts
26. ni SAP server sends announces about the multicast programs on the network in IPv4 or IPv6 and VLCs receive these annouces and automatically add the programs announced to their playlist The mini SAP server works under Linux and Mac OS X is a codec To fully understand the VideoLAN solution you must understand the difference between a codec and a container format Acodec is a compression algorithm used to reduce the size of a stream There are audio codecs and video codecs MPEG 1 MPEG 2 MPEG 4 Vorbis DivX are codecs e A container format contains one or several streams already encoded by codecs Very often there is an audio stream and a video one AVI Ogg MOV ASF are container formats The streams contained can be encoded using different codecs In a perfect world you could put any codec in any container format Unfortunately there are some incompatibilities You can find a matrix of possible codecs and container formats on the features page http www videolan org streaming features html To decode a stream VLC first demuxes it This means that it reads the container format and separates audio video and subtitles if any Then each of these are passed decoders that do the mathematical processing to decompress the streams There is a particular thing about MPEG e MPEG is a codec There are several versions of it called MPEG 1 MPEG 2 MPEG 4 MPEG is also a container format sometimes refered to as MPEG
27. oftware which everyone can redistribute and change under these terms To do so attach the following notices to the program It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty and each file should have at least the copyright line and a pointer to where the full notice is found lt one line to give the program s name and a brief idea of what it does gt Copyright C lt year gt lt name of author gt This program is free software you can redistribute it and or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License or at your option any later version This program is distributed in the hope that it will be useful but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE See the GNU General Public License for more details You should have received a copy of the GNU General Public License along with this program if not write to the Free Software Foundation Inc 59 Temple Place Suite 330 Boston MA 02111 1307 USA Also add information on how to contact you by electronic and paper mail If the program is interactive make it output a short notice like this when it starts in an interactive mode Gnomovision version 69 Copyright C year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY for details type show w This i
28. program being repeated indefinitely The option rtp makes the TS packet to be send through the RTP protocol as defined in RFC 1889 and RFC 2250 stop Usage stop lt channel gt stop ends the broadcast of the specified channel forward Usage forward lt channel gt lt speed gt forward forwards the channel with the given speed This does not work when reading directly from a device such as an MPEG encoding card a DVB card or an acquisition card rewind Usage rewind lt channel gt lt speed gt rewind rewinds the channel with the given speed This does not work when reading directly from a device such as an MPEG encoding card a DVB card or an acquisition card 21 suspend Usage suspend lt channel gt suspend suspends the streaming of the specified channel resume Usage resume lt channel gt resume resumes the streaming of the specified channel logout Usage logout logout closes the current administration session and the remote connection shutdown Usage shutdown shutdown stops all the programs and shutdowns VLS Chapter 5 Running VLS 22 Appendix A GNU General Public License Preamble The licenses for most software are designed to take away your freedom to share and change it By contrast the GNU General Public License is intended to guarantee your freedom to share and change free software to make sure the software is free for all its users This General Publi
29. r via ml videolan en html There are two English speaking mailing lists for the users e vic videolan org for the questions on VLC e streaming videolan org for the questions on VLS mini SAP server and the network If you want to subscribe or unsubscribe to the mailing lists please go to the mailing list page http www videolan org support lists html You can also talk with VideoLAN users and developers on IRC server irc freenode net channel videolan If you find a bug please follow the instructions on the bug reporting page http www videolan org support bug reporting html Command line usage e VLC has many different graphical interfaces that are organized quite differently in order to be in harmony with the guidelines of each operating system supported Documenting the use of each graphical interface is too long and some features are only available via the command line interface Therefore we decided to document only the command line interface but in many cases it shoud be easy to guess how to use the graphical interface for the same use e VLS has a command line and a telnet interface but no graphical interface All the commands that show up in this document should be typed inside a terminal Open a terminal Windows Click on Start Run and type e cmd Enter Windows 2000 XP command Enter Windows 95 98 ME The terminal appears Chapter 1 Introduction Figure 1 2 Windows terminal
30. s derived from the Program or any part thereof to be licensed as a whole at no charge to all third parties under the terms of this License 3 If the modified program normally reads commands interactively when run you must cause it when started running for such interactive use in the most ordinary way to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty or else saying that you provide a warranty and that users may redistribute the program under these conditions and telling the user how to view a copy of this License Exception If the Program itself is interactive but does not normally print such an announcement your work based on the Program is not required to print an announcement These requirements apply to the modified work as a whole If identifiable sections of that work are not derived from the Program and can be reasonably considered independent and separate works in themselves then this License and its terms do not apply to those sections when you distribute them as separate works But when you distribute the same sections as part of a whole which is a work based on the Program the distribution of the whole must be on the terms of this License whose permissions for other licensees extend to the entire whole and thus to each and every part regardless of who wrote it Thus it is not the intent of this section to claim rights or contest your rights to work written en
31. s free software and you are welcome to redistribute it under certain conditions type show c for details The hypothetical commands show w and show c should show the appropriate parts of the General Public License Of course the commands you use may be called something other than show w and show c they could even be mouse clicks or menu items whatever suits your program You should also get your employer if you work as a programmer or your school if any to sign a copyright disclaimer for the program if necessary Here is a sample alter the names Yoyodyne Inc hereby disclaims all copyright interest in the program Gnomovision which makes passes at compilers written by James Hacker lt signature of Ty Coon gt 1 April 1989 Ty Coon President of Vice 27 Appendix A GNU General Public License This General Public License does not permit incorporating your program into proprietary programs If your program is a subroutine library you may consider it more useful to permit linking proprietary applications with the library If this is what you want to do use the GNU Library General Public License instead of this License 28
32. ter help browse start resume suspend forward rewind stop shutdown logout END Section Users This section contains a list of users allowed to control VLS through an administration interface For each user add a line in the following format username password groupname This adds a user username who belongs to the group groupname defined in the Groups section and can log in with the password password e Under Unix Linux the password must be encrypted with a tool such as mkpasswd or with the UNIX function crypt e Under Windows the password must be in clear text Example for Unix Linux BEGIN Users 13 Chapter 4 Configuration monitor 3BcKWoiQn0Ovi6 monitor password is monitor admin 42BKiCguFAL c master password is Vir4Gv5S END Section Telnet In this section you can configure the telnet administration interface LocalPort port Defines which port will be used for the telnet server Default port is 9999 Domain domain Either inet4 or inet6 default is inet4 If you want to use IPv4 addresses put inet4 and if you want to use IPv6 put jnet6 LocalAddress IP address Defines on which IP address the telnet server will listen for requests Default address is 0 0 0 0 or 0 0 with IPv6 Example BEGIN Telnet LocalPort 9999 END Section NativeAdmin Same syntax as Telnet Not used yet Section Inputs In this se
33. tirely by you rather the intent is to exercise the right to control the distribution of derivative or collective works based on the Program In addition mere aggregation of another work not based on the Program with the Program or with a work based on the Program on a volume of a storage or distribution medium does not bring the other work under the scope of this License 24 Appendix A GNU General Public License Section 3 You may copy and distribute the Program or a work based on it under Section 2 in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following 1 Accompany it with the complete corresponding machine readable source code which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange or 2 Accompany it with a written offer valid for at least three years to give any third party for a charge no more than your cost of physically performing source distribution a complete machine readable copy of the corresponding source code to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange or 3 Accompany it with the information you received as to the offer to distribute corresponding source code This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer i
34. to start this program see next chapter Running VLS e type can be MpegI PS Mpeg2 PS Mpeg2 TS or DVD If your stream is stored in a MPEG file mpeg mpg vob and so on it is probably in Mpeg1 PS or Mpeg2 PS format e if type is set to Mpegl1 PS Mpeg2 PS or Mpeg2 TS VLS will assume your stream is stored in the file file in the directory path path being the variable defined in the Input section e if type is DVD the variable Device will be used instead of FileName the variable FilesPath is not prepended to the device name The variable Device is the device of your DVD drive dev hdc or dev cdrom for instance You can also play a DVD copied on a hard disk then Device is the directory where the vob files are stored mnt data VIDEO TS for instance Note VLS can stream MPEG files that meet two critera the file must be MPEG PS Program Stream or MPEG TS Transport Stream that contain video and audio multiplexed VLS cannot stream MPEG ES Elementary Stream i e a file with only audio or video In order to know if an MPEG file is MPEG PS MPEG TS or MPEG ES read the file with VLC and look at the messages in the messageswindow or use the command line vlc vvv If you see a line 18 00000107 main module debug it means the file is MPEG TS If you see a line 00000109 main module debug it means the file is MPEG PS If you see a line 00000109
35. v4l input which can read from acquisition cards supported by the Video4Linux drivers You can use several inputs and play several programs at the same time Converter The role of a converter is to receive a stream from an input and convert it into the MPEG TS format VLS is able to convert PS streams from DVDs for instance into TS streams ps2ts converter Of course it can also read TS streams and fix them by handling stream discontinuities ts2ts converter 10 Chapter 3 Overview and basic concepts Channel A channel receives a stream from a converter and send it to a given destination network file If you want you can call a channel an output it is the same thing Currently two kinds of channels are supported network and file Note that at the moment VLS can support only one output per stream so you cannot play a stream on the network and write it into a file at the same time The network output is highly configurable you can choose which network interface you want to use and specify source and destination IP addresses Manager The manager controls the way streams are sent Through an administration interface you can tell the manager to start stop suspend resume forward or rewind the different programs You can also get a list of all programs available in the Program Table The manager gets this table from the VLS configuration file v1s cfg so it cannot be changed once VLS has been started At t
36. want to use the telnet interface running VLS is very easy just type vls in a shell console and that s all Running visd will start VLS as a daemon and will detach itself from the launching shell Remember that VLS will try to load its configuration file vls cfg from the current directory and if there is no vls cfg there it will try to load it from SYSCONF_DIR etc videolan see section Configuration Caution If your log file is v1s 1og as in the example VLS will need write access in the current directory or you will see something like Exception in copy constructor Oxbffffc98 copy of 0x80e30a8 Unable to open the log file vls log Error Could not open file vls log Permission denied Remember also that you must be root when using the Interface option in vis cfg If everything is right you will see something like VideoLAN Server v 0 5 3 Jun 6 2003 c 1999 2003 VideoLAN 2002 03 09 17 24 51 INFO Vls Module channel file registered 2002 03 09 17 24 51 INFO Vls Module channel network registered 2002 03 09 17 24 51 INFO Vls Module mpegreader file registered 2002 03 09 17 24 51 INFO VIs Module mpegconverter ts2ts registered ss What you can see on the screen stderr is exactly what goes in the log file vls 1log When VLS has been successfully started it doesn t take any command from its standard input so you can put it into background you can use the screen utility to do that On the ot
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