Agora 多对一直播

Question

I have a requirement in which different user will stream videos from their camera to a server and there will be dashboard in which the admin can view all the streams real-time something like how surveillance works? I think video broadcasting can help but the documentation says it enables live streaming from one-to-many and many-to-many but there is no mention of the many-to-one case. How can I achieve this?

Answer 1

The use-case you have described would be implemented the same way as a many-to-many broadcast.

For your use-case you would have all of the camera streams join the channel as broadcasters and then the "surveillance" user would join as an audience . The audience member subscribes to all the remote streams without having to broadcast a stream of their own.

[Update]
With Agora's SDK you can use an external video source, you would just have to manage it yourself. If you are using a custom video source then you don't need to use RTMP.

IVideoFrameConsumer mConsumer;
boolean mHasStarted;

// Create a VideoSource instance.
VideoSource source = new VideoSource() {
    @Override
    public int getBufferType() {
        // Get the current frame type. 
        // The SDK uses different methods to process different frame types.
        // If you want to switch to another VideoSource type, create another instance.
        // There are three video frame types: BYTE_BUFFER(1); BYTE_ARRAY(2); TEXTURE(3)
        return BufferType.BYTE_ARRAY;
    }

    @Override
     public boolean onInitialize(IVideoFrameConsumer consumer) {
        // Consumer was created by the SDK.
        // Save it in the lifecycle of the VideoSource.
        mConsumer = consumer;
    }

    @Override
     public boolean onStart() {
        mHasStarted = true;
    }

    @Override
      public void onStop() {
        mHasStarted = false;
    }

    @Override
     public void onDispose() {
        // Release the consumer.
        mConsumer = null;
    }
};

// Change the inputting video stream to the VideoSource instance.
rtcEngine.setVideoSource(source);

// After receiving the video frame data, use the consumer class to send the data.
// Choose differnet methods according to the frame type.
// For example, the current frame type is byte array, i.e. NV21.
if (mHasStarted && mConsumer != null) {
    mConsumer.consumeByteArrayFrame(data, AgoraVideoFrame.NV21, width, height, rotation, timestamp);
}

full guide: https://docs.agora.io/en/Video/custom_video_android?platform=Android