> On Apr 12, 2022, at 8:45 AM, Andy Gee via live-devel 
> <live-de...@us.live555.com> wrote:
> 
> Is it possible to request only the VND.ONVIF.METADATA/8000 substream
> without requesting the video

I have just installed a new version (2022.04.12) of the “LIVE555 Streaming 
Media” code that updates the “openRTSP” application to let you do this.

Now, if you add the “-L” (upper-case L) option, then “openRTSP” will request 
only the “application” substream (e.g., the metadata stream), and output the 
resulting data to ‘stdout’.  (This is analogous to the existing options “-a” 
and “-v”, which let you receive only the audio track or only the video track, 
respectively.)

So, you can add the “-L” option to your “openRTSP” command line, and then 
redirect the output to a file, or pipe it to some other application to process 
the metadata.


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



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