rtsp-server has high latency

[Tim Müller]

On Tue, 2016-09-27 at 15:54 -0700, jlancaster wrote:

Hi Jeff,

> I am on an embedded system with a built in camera streaming through
> v4l2. If I set my stream using (snip pipeline) I can stream it to my
> desktop with very low latency. 
> 
> If I use the gstreamer-1.0 rtsp-server (snip pipeline) and stream to
> my own display:
> 
> gst-launch-1.0 -v rtspsrc location=rtsp://localhost:5000/test !
> rtph264depay ! h264parse ! imxvpudec ! imxipuvideosink
> 
> My latency is 2+ seconds.
> 
> Any thoughts?

It's not gst-rtsp-server that has high latency, it's rtspsrc which
contains an rtp jitterbuffer that defaults to 2 seconds latency
(2000ms). Try with e.g. rtspsrc latency=200 or whatever.

Cheers
 -Tim

-- 
Tim Müller, Centricular Ltd - http://www.centricular.com

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