[streaming] using vlc as voice over IP solution.

[herve couvelard]

Hello,

We are using vlc to implement a "teacher listen students and talk to 
them" solution.

what we do is :

stream :
aoss vlc -I dummy --rt-priority  --no-sout-video  --udp-caching 40 
--v4l-caching 40 --sout-ffmpeg-hurry-up -q \
  --ffmpeg-hurry-up --sout-ffmpeg-rc-buffer-size 0 --rtsp-caching 0 -vvv 
--sout-udp-caching 0 v4l:adev="/dev/dsp0" \
--sout 
#transcode{vcodec=none,acodec=mpga}:std{access=udp,mux=TS,dst=239.255.1.10}"

(we use aoss to avoid blocking access to /dev/dsp)

listen to stream :

aoss vlc -I dummy --udp-caching 50 --no-video --sout-ffmpeg-hurry-up \
--aout alsa --alsadev dmix --no-dvdnav-menu -q udp://@239.255.1.10


the stream is ok, but there is a delay of 500ms between the sender and 
the receiver.

Is there a way to reduce drastically this delay from the command line 
option ? Is there a way to reduce that delay developing  the application ?

Thanks very much for your help.

hervé