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howto-html-en-20080722-2mdv2010.1.noarch.rpm

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>&#13;
Stream with the Hauppauge WinTV-PVR-250 card

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>Chapter 7. Stream from an MPEG encoding card</TD
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><DIV
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><H1
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>7.1. Stream with the Hauppauge WinTV-PVR-250 card</H1
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="AEN869"
></A
>7.1.1. Install the drivers</H2
><P
>&#13;First, you will have to patch your kernel to support
the v4l2 API (Video 4 Linux version 2). The patch is available on the
<A
HREF="http://bytesex.org/v4l/"
TARGET="_top"
>Video4Linux HQ</A
>

.</P
><P
>&#13;Once your kernel is ready, install the CVS version
of the Linux drivers for the Hauppauge WinTV-PVR-250. They are hosted on
<A
HREF="http://ivtv.sourceforge.net/"
TARGET="_top"
>ivtv.sourceforge.net</A
>.
Then, you will have to create the device and load the modules; for this,
please refer to the documentation shipped with the drivers


.</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="AEN875"
></A
>7.1.2. Stream with VLC</H2
><DIV
CLASS="note"
><P
></P
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><P
>&#13;You must add <B
CLASS="command"
>--enable-pvr</B
>
to <B
CLASS="command"
>./configure</B
> to use this
feature. You may want to change the value of
<EM
>CR_MAX_AVERAGE_COUNTER</EM
> to <EM
>1000</EM
>
in <TT
CLASS="filename"
>src/input/input_clock.c</TT
> to work around a problem
with the card

.</P
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><PRE
CLASS="screen"
>&#13;<TT
CLASS="prompt"
>% </TT
><TT
CLASS="userinput"
><B
>vlc -vvv pvr:/dev/video0:norm=secam:size=720x576:frequency=576250:
bitrate=3000000:maxbitrate=4000000 --sout udp:192.168.0.42 --ttl 12</B
></TT
>
</PRE
></FONT
></TD
></TR
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><P
>where
 :</P
><P
></P
><UL
><LI
><P
><EM
>/dev/video0</EM
> 
is the device corresponding to the encoding card

,</P
></LI
><LI
><P
><EM
>norm=secam</EM
>
 is name of the standard of the analogic signal
(possible values are pal, secam, and ntsc)

,</P
></LI
><LI
><P
><EM
>size=720x576</EM
>
is the size of the video you want to stream

,</P
></LI
><LI
><P
><EM
>frequency=567250</EM
>
 is the frequency in kHz of the channel you want to
stream

,</P
></LI
><LI
><P
><EM
>bitrate=3000000</EM
> 
is the average bitrate of the stream

,</P
></LI
><LI
><P
><EM
>maxbitrate=4000000</EM
>
is the maximum bitrate of the stream

,</P
></LI
><LI
><P
><EM
>192.168.0.42</EM
>
 is either 

:</P
><P
></P
><UL
><LI
><P
>&#13;the IP address of the machine you want to unicast
to

;</P
></LI
><LI
><P
>&#13;or the DNS name the machine you want to unicast
to

;</P
></LI
><LI
><P
>&#13;or a multicast IP address

.</P
></LI
></UL
></LI
><LI
><P
><EM
>12</EM
>
 is the value of the TTL (Time To
Live) of your IP packets (which means that the stream will be
able to cross 11 routers)

.</P
></LI
></UL
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="AEN920"
></A
>7.1.3. Stream with VLS</H2
><P
>&#13;There is no command line interface for this input
for the moment, so you will have to use the configuration file

.</P
><P
>&#13;You cannot set-up the parameters of the drivers
(norm, size, frequency, bitrate, etc...) with VLS: for that, you will
have to use the program <B
CLASS="command"
>ptune.pl</B
> that come with the
drivers. Please refer to the documentation shipped with the drivers to
learn how to use this program

.</P
><P
>&#13;Here is a typical configuration file
<TT
CLASS="filename"
>vls.cfg</TT
>to run VLS with a Hauppauge WinTV-PVR-250
encoding card


:</P
><TABLE
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><PRE
CLASS="programlisting"
>&#13;# vls.cfg (VLS configuration file)
# Example of the VideoLAN HOWTO for the Hauppauge WinTV-PVR-250 encoding card

BEGIN "Inputs"

  pvr       = "video"

END

BEGIN "pvr"

  # Hauppauge WinTV-PVR-250 device
  Device        = "/dev/video0"

  # Stream type
  Type          = "Mpeg2-PS"

END

BEGIN "Channels"

  channel1       = "network"

END

BEGIN "channel1"

  # Unicast or multicast IP address
  DstHost = "192.168.0.42"

  # Destination port
  DstPort = "1234"

  # If it's a multicast IP address, uncomment the line below
  #Type    = "multicast"

  # If it's a multicast IP address, set the "Time To Live" below
  #TTL     = "12"

END

BEGIN "LaunchOnStartUp"

  command1 = "start video channel1 pvr"

END
</PRE
></FONT
></TD
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><P
>&#13;Once you have adapted the configuration file above,
run VLS

:</P
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><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="screen"
>&#13;<TT
CLASS="prompt"
>% </TT
><TT
CLASS="userinput"
><B
>vls -vv -f vls.cfg</B
></TT
>
</PRE
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