input sdp information from file with VLCJ

[TheMagge]

Hey there

Looking around here got me to try several things.
It is my first time trying to input options into the mediaplayer so i do not know the correct syntax here.

Plz help withe the following:

Im using libstreamer together with android to send a rtp stream to vlc and a PC. If im saving the sdp in a file.sdp and opens it with vlc it works. Video and audio.
The first thing i tried were to open the same file like:

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String mrl = "C:\\folder\\ws.sdp"; p.playMedia( mrl );

did not work. So the next thing were to look into the options and ended up with:

mediaPlayer.playMedia(mrl, option);
2 questions: how to define the mrl? video port 5006 and audio port 5010.
How do i load in the sdp file or are there a third option to just like "click" the file.sdp?

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mediaPlayer.playMedia("rtp://@:5006/", "sout=#transcode{vcodec=h264}", ":sout=#rtp{sdp=file:C:\\folder\\ws.sdp}", ":no-sout-rtp-sap", ":no-sout-standard-sap", ":sout-all", ":rtp-caching=100", ":sout-keep");

.sdp informations

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v=0 o=- 0 0 IN IP4 null s=Unnamed i=N/A c=IN IP4 10.251.1.125 t=0 0 a=recvonly m=audio 5010 RTP/AVP 96 a=rtpmap:96 AMR/8000 a=fmtp:96 octet-align=1; a=control:trackID=0 m=video 5006 RTP/AVP 96 a=rtpmap:96 H264/90000 a=fmtp:96 packetization-mode=1;profile-level-id=428014;sprop-parameter-sets=Z0KAFNoFB+gG0KE1,aM4G4g==; a=control:trackID=1

[Rémi Denis-Courmont]

There are two ways to play a declarative SDP, either pass the URL of a file that contains it, or pass the SDP as is preceded by "sdp://" (i.e. "sdp://v=0\r\no="...).

[TheMagge]

There are two ways to play a declarative SDP, either pass the URL of a file that contains it, or pass the SDP as is preceded by "sdp://" (i.e. "sdp://v=0\r\no="...).

Hey there ty for a quick response.
I tried the following and it did't work. Can you plz be more specific? As i wrote i am not sure about the syntax for writing this to VLC. Thanks in advance.

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mrl = "sdp://v=0\r\\o=- 0 0 IN IP4 null\r\\s=Unnamed\r\\i=N/A\r\\c=IN IP4 192.168.1.5\r\\t=0 0\r\\a=recvonly\r\\m=audio 5010 RTP/AVP 96\r\\a=rtpmap:96 AMR/8000\r\\a=fmtp:96 octet-align=1;\r\\a=control:trackID=0\r\\m=video 5006 RTP/AVP 96\r\\a=rtpmap:96 H264/90000\r\\a=fmtp:96 packetization-mode=1;profile-level-id=428014;sprop-parameter-sets=Z0KAFNoFB+gG0KE1,aM4G4g==;\r\\a=control:trackID=1\r\\"; p.playMedia( mrl );

either pass the URL of a file that contains it

I got the file to work. Just like opening it with VLC

I will appreciate if you would explain the second possibility even further due to it being the best choice for my program.

[Rémi Denis-Courmont]

I cannot be more specific than specific, no.

[sherington]

I can't answer your specific question, but something you can try with vlcj is to change your original code to something like this:

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String mrl = "C:\\folder\\ws.sdp"; p.setPlaySubItems(true) p.playMedia( mrl );

[TheMagge]

I can't answer your specific question, but something you can try with vlcj is to change your original code to something like this:

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String mrl = "C:\\folder\\ws.sdp"; p.setPlaySubItems(true) p.playMedia( mrl );

That worked just like opening it with VLC it self.

What i wish to do, is to open it without using a file. If i could just input a string with the sdp information inside and then playMedia(sdp_String).
That would be truly awesome!

[chuck2nd]

or pass the SDP as is preceded by "sdp://" (i.e. "sdp://v=0\r\no="...).

Per above direction I was hoping you could pass vlc the sdp as a parameter. I have tried many variations of below to no effect.

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vlc "sdp://v=0\r\nC=IN IP4 239.192.8.8\r\nm=video 15099 RTP/AVP 96\r\na=rtpmap:96 H264/90000"

Is it not possible to pass sdp file dynamically as a vlc parameter? I have a situation in a locked down environment where I can not access an external file.

thanks,

Chuck

[Rémi Denis-Courmont]

How to format command line parameters depends on your shell or OS. VLC does not intervene here.