Re: [Live-devel] ProxyServerMediaSession for Transcoding

[support]

Ross,

Thanks for your support. Proxy behind proxy really works. Appreciate if
this can be solved at your convenience.

Regards,
Support Team

On Sun, Oct 16, 2016 at 12:15 PM, Ross Finlayson 
wrote:

> > Based on your earlier post I was able to understand how to use filter
> for transcoding.and I'am able to transcode the video stream.
> >
> > However I have one problem in it. I cannot use 1 stream coming from the
> camera to be transcoded to multiple transcoded images.
>
> When you say “1 stream from the camera […] transcoded to multiple
> transcoded images” do you mean:
> 1) the ability for multiple 'front-end' clients to access the
> proxy stream concurrently, with each of these front-end clients getting an
> (identical) copy of the transcoded stream, or
> 2) allowing the proxy server to serve two (or more) different
> named streams that come from a single input ‘back-end’ stream, with each of
> the proxied streams being transcoded into a different codec and/or a
> different resolution?
>
> If you’re asking for 1), then this already happens automatically.  If
> multiple ‘front-end’ clients access the proxy server, then they will each
> automatically get a copy of the transcoded stream (yet the transcoding will
> be done only once).
>
> However, if you’re asking for 2), then this is not possible with the
> current proxy server.  What you *can* do, however, is have two (or more)
> separate “ProxyServerMediaSession” objects, each using the same ‘back-end’
> “rtsp://“ URL, but transcoded differently.  This will cause multiple copies
> of the ‘back-end’ stream to come from the camera to the proxy server.  (You
> could avoid this, however, by putting *another* proxy server between the
> proxy server and the ‘back-end’ camera stream.)
>
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
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Re: [Live-devel] ProxyServerMediaSession for Transcoding

[Ross Finlayson]

> Based on your earlier post I was able to understand how to use filter for 
> transcoding.and I'am able to transcode the video stream.
> 
> However I have one problem in it. I cannot use 1 stream coming from the 
> camera to be transcoded to multiple transcoded images. 

When you say “1 stream from the camera […] transcoded to multiple transcoded 
images” do you mean:
1) the ability for multiple 'front-end' clients to access the proxy 
stream concurrently, with each of these front-end clients getting an 
(identical) copy of the transcoded stream, or
2) allowing the proxy server to serve two (or more) different named 
streams that come from a single input ‘back-end’ stream, with each of the 
proxied streams being transcoded into a different codec and/or a different 
resolution?

If you’re asking for 1), then this already happens automatically.  If multiple 
‘front-end’ clients access the proxy server, then they will each automatically 
get a copy of the transcoded stream (yet the transcoding will be done only 
once).

However, if you’re asking for 2), then this is not possible with the current 
proxy server.  What you *can* do, however, is have two (or more) separate 
“ProxyServerMediaSession” objects, each using the same ‘back-end’ “rtsp://“ 
URL, but transcoded differently.  This will cause multiple copies of the 
‘back-end’ stream to come from the camera to the proxy server.  (You could 
avoid this, however, by putting *another* proxy server between the proxy server 
and the ‘back-end’ camera stream.)


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/


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