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Recording and Duplicating a webcam stream with VLC

i'm trying to record a webcam, save it and stream it to a local network. The Problem is, i want to do this with different compression:
The stream for the local network should only have <400kbit/s, but the other one, which is stored to a local file, should be uncompressed or with up to 10 Mbit/s

So i tried two methods to solve this:

First i played a little bit with the VLC Gui. It is really easy to record the Webcam, then transcode it and save it to a file or/and stream it to the internet. The command line looks like this:

vlc v4l2:///dev/video0 :v4l2-standard= :live-caching=300 :sout="#transcode{vcodec=WMV2,vb=380,fps=1,scale=Automatisch,acodec=none}:duplicate{dst=file{dst=stream.asf,no-overwrite},dst=http{dst=:8080/stream.wmv}}" :sout-keep

But i had the problem that both, the internet stream and the file, are getting compressed. So i changed the order of "duplicate" and "transcode" to:

vlc v4l2:///dev/video0 :v4l2-standard= :live-caching=300 :sout="#duplicate{dst=file{dst=stream.asf,no-overwrite}, dst="transcode{vcodec=WMV2,vb=380,fps=1,scale=Automatisch,acodec=none}:http{dst=:8080/stream.wmv}"}" :sout-keep

My thought: Now i should have a compressed internet stream and the orignal file. But it doesn't stream it to the internet.

So i tried another method: I wanted to stream the original stream to port 8080 and then use two other VLC instances to generate a compressed network stream to port 8008 and a original file. But i cant stream a stream....

So i would be really thankful, if someone has another idea or a hint where my problem is. Sorry for my english. Have a nice day.

Solution

  • You are double quoting the :sout. If you plan to use quotes " inside the value then use apostrophe ' to enclose the whole argument like:

    :sout='#duplicate{dst=file{...}, dst="transcode{...}:http{dst=:8080/stream.wmv}"}'

    If you add a -v (verbose output) at the end of your command you'll see some other issues too like no-overwrite not being recognized. Also,scale=Automatisch should be scale=auto.

    Please note that I checked just the syntax and not your encoding parameters.