The VideoLAN Forums

Posted: **27 Jul 2012 17:15**

Hello there!

In short: Is there a way to start a (--sout) playlist item automatically if a stream is available?

To elaborate on this: I'm currently setting up a streaming environment where users publish their h.264 RTSP-stream via Quicktime Broadcaster to a Darwin Streaming Server instance (running on Ubuntu 10.04). So far, so little VLC involved...

In order to embed the video on a flashplayer webpage, I transcode the incoming RTSP with VLC (VLC media player 1.0.6 Goldeneye) like this:

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cvlc -vv rtsp://myserver.net:5678/streamname.sdp --no-sout-transcode-hurry-up --sout-mux-caching=4000 --rtsp-caching=4000 --sout="#transcode{threads=auto,deinterlace,aenc=ffmpeg{aac-profile=low},ab=192,samplerate=44100,channels=2,acodec=mp4a,audio-sync,vcodec=h264,width=640,height=480,fps=24,scale=1,vb=224,venc=x264{keyint=250,preset=veryfast,level=-1,profile=baseline,nocabac,slices=8,qcomp=0.4,vbv-maxrate=2000,vbv-bufsize=2000}}:std{access=http,mux=ffmpeg{mux=flv},mime="video/x-flv",dst=:5677/streamname.mp4}"

Despite lacking complete understanding of all the options involved, above code is running okay for me.

However, the current setup needs manual starting _and_ stopping of the VLC instance (which is not desired). Any insights on how to 'daemonize' the transcoding?

Currently I could think of the following:

Make VLC trying to reconnect whenever the RTSP stream stops (this one is especially needed if the transcoding crashes). OR
Create a daemon process that checks for the RTSP and starts VLC if the transcoded stream doesn't exist. OR
??? Am I just doing it wrong?

Hopefully somebody here can enlighten me

Regards,
Konrad

Posted: **27 Jul 2012 17:30**

Oh dear!

I figured it out (writing just helps finding the right query it seems

).

Searching for 'autostart' I stumbled upon this: viewtopic.php?f=14&t=86796&p=287362&hil ... rt#p287362.

Altering the code from above I ended up with this:

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cvlc -vv --loop rtsp://myserver.net:5678/streamname.sdp --no-sout-transcode-hurry-up --sout-mux-caching=4000 --rtsp-caching=4000 --sout="#transcode{threads=auto,deinterlace,aenc=ffmpeg{aac-profile=low},ab=192,samplerate=44100,channels=2,acodec=mp4a,audio-sync,vcodec=h264,width=640,height=480,fps=12,scale=1,vb=224,venc=x264{keyint=250,preset=veryfast,level=-1,profile=baseline,nocabac,slices=8,qcomp=0.4,vbv-maxrate=2000,vbv-bufsize=2000}}:std{access=http,mux=ffmpeg{mux=flv},mime="video/mp4",dst=:5677/streamname.mp4}" vlc://pause:5

So basically adding the

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--loop

option and adding a

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vlc://pause:5

to the playlist. Works like a charm!

Maybe this helps somebody sometimes?

Cheers,
Konrad

The VideoLAN Forums

[Solved] Autostart when RTSP-stream arrives?

[Solved] Autostart when RTSP-stream arrives?

Re: Autostart when RTSP-stream arrives?