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While composing a command line stream via GUI, I get proper operation. However, when I try to make the equivalent directly as a command line, it gets stuck. An example: I select /dev/video0 as the input, and compose the appropriate output ensemble that looks exactly like this in the "generated stream output string": This works fine.
Then I copy&paste this info into a command line as follows: ... it does not work:

• [0x8fb8824] main stream output error: stream chain failed for `transcodesamplerate=44100:udp{dst=239.255.1.1:1234}'
  [0x8dc6bfc] main input error: cannot start stream output instance, aborting

I also tried adding 's here: '#transcode.......:1234}'. Not such error as above, but still no operation.

I also tried copying other failing options, gathered from the -vvv verbose output:

[0x9f8252c] qt4 interface debug: MRL passed to the Sout: v4l2:///dev/video0
[0x9f8252c] qt4 interface debug: Adding option: input-slave=alsa://
[0x9f8252c] qt4 interface debug: Adding option: v4l2-standard=0
[0x9f8252c] qt4 interface debug: Adding option: file-caching=300
[0x9f8252c] qt4 interface debug: Adding option: :sout=#transcode{vcodec=h264,vb=500,fps=15,scale=1,acodec=mp4a,ab=128,channels=2,samplerate=44100}:udp{dst=239.255.1.1:1234}
[0x9f8252c] qt4 interface debug: Adding option: no-sout-rtp-sap
[0x9f8252c] qt4 interface debug: Adding option: no-sout-standard-sap
[0x9f8252c] qt4 interface debug: Adding option: sout-keep
[0x9f83534] main playlist debug: adding item `Streaming' ( v4l2:///dev/video0 )

The command line looks like this: I'd wish an option in vlc that shows the complete command line after having composed one via GUI... (I have spent hours to try to get it right, quite frustrating)

See, for a brief description and example...

http://wiki.videolan.org/Stream_VLC_to_ ... h#Appendix

First prove out your input, which should be like this
Try this first at the terminal to make sure it plays your capture device. ( you won't need any '...' around your devices in linux)

Then add your You will need '...' around your transcode as above.
Add as required

Well, now it works. I did test it with the single quotes, as documented above, and also with adding the ":input-slave=alsa:// :v4l2-standard=0 :file-caching=300"- stuff which represent the options from the input stream, but not *both* at the same time...
Thanks for your help!