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>Chapter 8. Stream from an acquisition card or a webcam</TD
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>8.3. Stream with VLS</H1
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> You need the CVS version of VLS. When you
compile it, you must do a <B
CLASS="command"
>./bootstrap</B
> and
<B
CLASS="command"
>./configure --enable-v4l
--with-ffmpeg=PATH</B
> (where <EM
>PATH</EM
> is the
absolute path to the directory where you compiled ffmpeg, and not the
relative path !)
.</P
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><P
> There is no command line interface for this input
for the moment, so you will have to use the configuration file
.</P
><P
> Here is a typical configuration file
<TT
CLASS="filename"
>vls.cfg</TT
>to run VLS with a v4l device
:</P
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> # vls.cfg (VLS configuration file)
# Example of the VideoLAN HOWTO for the Video for Linux input
BEGIN "Inputs"
webcam = "v4l"
END
BEGIN "webcam"
# V4L device
Device = "/dev/video"
# Channel Source : Webcam is often "0"
# TV Card, may be Tuner(0), Composite(1), Svideo(2)
Channel = "0"
# Norm: PAL=0, NTSC=1, SECAM=2
Norm = "0"
# Frequency of the channel in Mhz, multiplied by 16 (tuner cards only)
Frequency = "7668"
# Size possibilities: can be either:
# - empty string : default size
# - width x height
# - subQCIF(128x96), QSIF(160x120), QCIF(176x144), SIF(320x240),
# CIF(352x288), VGA (640x480)
Size = ""
# DeInterlace: "0" = no ; "1" = yes
DeInterlace = "0"
# Video compression format: "mpeg1" or "mpeg4"
Compression = "mpeg4"
# Video bitrate (approx.) in kbps
Bitrate = "500"
# Quality: "1.0" (good) to "31.0" (bad)
Quality = "1.0"
# Sound device
AudioDevice = "/dev/dsp"
# Audio compression format: "mp2", "mp3" or "ogg"
AudioCompression = "mp2"
# Audio bitrate in kpbs
AudioBitrate = "64"
# Audio frequency ("16000", "22050", "24000", "32000", "44100" or "48000")
AudioFreq = "16000"
# Audio channel: "1" = mono ; "2" = stereo
AudioChannel = "2"
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 webcam"
END
</PRE
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><P
> Once you have adapted the configuration file above,
run VLS
:</P
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> <TT
CLASS="prompt"
>% </TT
><TT
CLASS="userinput"
><B
>vls -vv -f vls.cfg</B
></TT
>
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