VLC as a RTP client with low latency

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robosara
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VLC as a RTP client with low latency

Postby robosara » 26 May 2010 13:06

Hi all,

I am using VLC as a RTP/H264 client.
I would like to reduce observed latency, some skips time to time are not a problem.
I have tried with the :file-caching parameter, but I am not sure I am using the proper method.

My current command line is : vlc.exe --no-overlay toto.sdp :file-caching=100
If I try vlc.exe --no-overlay toto.sdp :file-caching=50, video is frozen.

What is the right way to reduce all caching to the minimum .

Rémi Denis-Courmont
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Re: VLC as a RTP client with low latency

Postby Rémi Denis-Courmont » 26 May 2010 18:59

--no-overlay does not help with latency. And you should probably use --rtsp-caching instead of file-caching.
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robosara
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Re: VLC as a RTP client with low latency

Postby robosara » 28 May 2010 13:08

--no-overlay does not help with latency. And you should probably use --rtsp-caching instead of file-caching.
Sorry, I have forgotten to remove overlay parameter.

--rtsp-caching does not seem to change something while file-caching reduce a little bit buffering.. Strange...

ipacker
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Re: VLC as a RTP client with low latency

Postby ipacker » 16 Jun 2011 17:08

I have experienced the same problem.

If playing a stream initiated by an SDP file VLC does not respect the combo of --clock-jitter=0 and --rtsp-caching=200 or --file-caching=200

If starting the same exact stream but the SDP comes via an RTSP session VLC respects them both.

Rémi Denis-Courmont
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Re: VLC as a RTP client with low latency

Postby Rémi Denis-Courmont » 16 Jun 2011 18:58

That particular problem was fixed 7 months ago in VLC 1.2...
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