how to disable audio (remove stream) from the rtspsrc stream

[lionel mazeyrat]

I have a program based on webrtcbin example.

private static final String PIPELINE_RTSP
= "rtspsrc location=%s protocols=tcp latency=%d user-id=%s user-pw=%s ! decodebin ! videoconvert name=videoconvert ! queue ! vp8enc %s ! rtpvp8pay"
+ " ! queue ! application/x-rtp,media=video,encoding-name=VP8,payload=97 ! webrtcbin. "
+ " webrtcbin name=webrtcbin bundle-policy=max-bundle";

 

I would like to disable audio from the rtsp stream but I can't figure out how to do this ?

[lionel mazeyrat]

rtspsrc = gst_bin_get_by_name (GST_BIN (pipeline), "r");
g_signal_connect (rtspsrc, "select-stream", G_CALLBACK (find_backchannel),

perhas with "select-stream" signal. But is it possible with java api ?

[Neil C Smith]

On Sun, 22 May 2022 at 17:39, lionel mazeyrat <lionel....@gmail.com> wrote:
> rtspsrc = gst_bin_get_by_name (GST_BIN (pipeline), "r");
> g_signal_connect (rtspsrc, "select-stream", G_CALLBACK (find_backchannel),
>
> perhas with "select-stream" signal. But is it possible with java api ?

In theory you can use GObject::connect directly, although you'll
probably have to use some lowlevel API too. Look for the uses of
those methods through the library for examples.

Really, we need a better way of mapping to arbitrary signals. I've
done some initial work on this already.

> Le dimanche 22 mai 2022 à 17:15:30 UTC+2, lionel mazeyrat a écrit :
>> private static final String PIPELINE_RTSP
>> = "rtspsrc location=%s protocols=tcp latency=%d user-id=%s user-pw=%s ! decodebin ! videoconvert name=videoconvert ! queue ! vp8enc %s ! rtpvp8pay"
>> + " ! queue ! application/x-rtp,media=video,encoding-name=VP8,payload=97 ! webrtcbin. "
>> + " webrtcbin name=webrtcbin bundle-policy=max-bundle";
>>
>> I would like to disable audio from the rtsp stream but I can't figure out how to do this ?

What actually happens here that you're trying to stop?

Best wishes,

Neil

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Neil C Smith
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www.codelerity.com

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[lionel mazeyrat]

Hi Neil

My pipeline works with somme rtsp stream, but with one stream I have an error I suspect to be relative toan supported audio format. I dont need audio, but only video and l would like to diable audio or exlude it.

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[Neil C Smith]

On Wed, 25 May 2022, 12:37 lionel mazeyrat, <lionel....@gmail.com> wrote:

My pipeline works with somme rtsp stream, but with one stream I have an error I suspect to be relative toan supported audio format. I dont need audio, but only video and l would like to diable audio or exlude it.

I'm just trying to get a sense of whether you can configure the decodebin to fix your problem. Does setting the caps property on the decodebin to just any video work?

Best wishes,

Neil

[lionel mazeyrat]

How do you configure decodebin to set caps property for just video ?

[lionel mazeyrat]

is it for input or outputs of the decodebin ?

[Neil C Smith]

On Thu, 26 May 2022 at 18:52, lionel mazeyrat <lionel....@gmail.com> wrote:
> How do you configure decodebin to set caps property for just video ?

Check the upstream docs, and in particular
https://gstreamer.freedesktop.org/documentation/playback/decodebin.html?gi-language=c#decodebin:caps

[lionel mazeyrat]

I finally found how to disable audio in rtsp stream with capsfilter caps="application/x-rtp,media=video" and it solved my issue !

rtspsrc location=rtsp://192.168.68.124:554/stream1 protocols=tcp latency=10 user-id=admintapo user-pw=admintapo ! capsfilter caps="application/x-rtp,media=video" ! decodebin ! videoconvert name=videoconvert ! queue ! vp8enc deadline=1 ! rtpvp8pay ! queue ! application/x-rtp,media=video,encoding-name=VP8,payload=97 ! webrtcbin. webrtcbin name=webrtcbin bundle-policy=max-bundle