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RTSP Stream from Server

Answered
Lazer Wiesner
Can we have a live camera RTSP (Trancoded) stream from the NX Server at 320p, 640p, or 1080p... (from API)? I currently use rtsp://:/12AB42FD5912?stream=1 How would I select 240p The following didnt work rtsp://:/12AB42FD5912?resolution=240p
1

Comments

9 comments

Date Votes
  • Sergey Yuldashev
    • Network Optix team

    Hello Lazer,

    Forcing the resolution invokes the transcoding if you request some custom value. So the server must support transcoding and have special value SF_SupportsTranscoding among for the attribute serverFlags  in the response to api/moduleInformation request.

    In my case it does and see the result of using different URI's in the VLC:

    rtsp://10.0.1.20:7001/b56d54f3-021f-8886-5412-61abeafcd95c

     

    rtsp://10.0.1.20:7001/b56d54f3-021f-8886-5412-61abeafcd95c?resolution=240p

     

    By deafult only ARM servers are not allowed to perform transcoding. Such servers will always return errors instead of the stream.

    Let us know if it's not the case for you.

     

     

     

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  • Norman
    • Network Optix team

    Hi Lazer Wiesner,

    Did you manage to resolve the issue or is further assistance required? 

    0
  • Guilhem Decoux
    • Authorized Reseller

    Hi,

    I can see easily how to call the main stream, and understand how to do transcoding... (but I'm using Debian RPI)

    But how can we simply call the substream using the Nx adress ? 

    rtsp://admin:MyPWDisSafe@192.168.0.21:7001/078d765a-c2d9-7cad-a176-f081c7883822

    Do we have to do do port forwarding on the router ? Port 7001 ? Port 80 ? Port 554 ?

    Waiting for your feedback !

    Cordialement

    0
  • Sergey Yuldashev
    • Network Optix team

    Hi Guilhem Decoux,

    If you want send any request and get any information from the server, you should initiate connection to the Server port. Which is by default 7001 but could be different according to your configuration.

    To understand how to call the secondary stream, please refer to the API documentation, more specifically you need a stream query parameter of the RTSP Streaming documentation:

    Open high quality stream if parameter is 0 or low quality stream if parameter is 1. 
    By default server auto detect preferred stream index based on destination resolution.

    So in your case it would look like:

    rtsp://192.168.0.21:7001/078d765a-c2d9-7cad-a176-f081c7883822?stream=1

    One more advise - please avoid using credentials as a part of your urls.
    Some clients(e.g. VLC) will parse and then encrypt them, other ones will send them as a plain text over the network. I believe, it's not the best thing to do.

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  • Lazer Wiesner

    How can I rotate the picture to 90 degrees with for example this API?

    rtsp://192.168.0.21:7001/078d765a-c2d9-7cad-a176-f081c7883822?stream=0

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  • Norman
    • Network Optix team

    Hi Lazer,

    Please check the server API in the RTSP section.

    The URL should be;

    rtsp://192.168.0.21:7001/078d765a-c2d9-7cad-a176-f081c7883822?stream=0&rotation=90

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  • Lazer Wiesner

    That didn't work.

    Can you test it on your end with vlc?

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  • Norman
    • Network Optix team
    Edited

    Hi Lazer Wiesner,

    I tested it on my side, and it seems we found an issue. Thank you.

    I submitted the issue to our dev team to resolve this issue and I will update this thread as soon as it is fixed.

    JIRA-VMS-22166

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  • Norman
    • Network Optix team

    Hi Lazer Wiesner,

    We resolved the issue and should be resolved in the first patch of version 4.2.

    0

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