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Adaptative video bitrate
Pedro Sánchez edited this page Jul 3, 2024
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4 revisions
This feature require API19+.
You can select manually your video bitrate on fly with this method:
rtmpCamera1.setVideoBitrateOnFly(bitrate);
Also you can set auto adaptive video bitrate.
Code example:
//class needed
private BitrateAdapter bitrateAdapter;
@Override
public void onConnectionSuccess() {
bitrateAdapter = new BitrateAdapter(new BitrateAdapter.Listener() {
@Override
public void onBitrateAdapted(int bitrate) {
rtmpCamera1.setVideoBitrateOnFly(bitrate);
}
});
bitrateAdapter.setMaxBitrate(videoBitrate);
}
@Override
public void onNewBitrate(long bitrate) {
if (bitrateAdapter != null) bitrateAdapter.adaptBitrate(bitrate);
}
Where videoBitrate is the value set to prepareVideo method.
//classes needed
private ConnectionClassManager connectionClassManager;
private UploadBandwidthSampler uploadBandwidthSampler;
//initialize classes
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
connectionClassManager = ConnectionClassManager.getInstance();
uploadBandwidthSampler = UploadBandwidthSampler.getInstance();
}
//register listener
@Override
protected void onResume() {
super.onResume();
connectionClassManager.register(new ConnectionClassManager.ConnectionClassStateChangeListener() {
@Override
public void onBandwidthStateChange(double bandwidth) {
AdapterBitrateParser.parseBitrate(videoBitrate, (int)bandwidth, new AdapterBitrateParser.Callback() {
@Override
public void onNewBitrate(int bitrate) {
rtmpCamera1.setVideoBitrateOnFly(bitrate);
}
});
}
});
}
//unregister listener
@Override
protected void onPause() {
super.onPause();
connectionClassManager.remove();
}
//You need start adaptative bitrate before startStream
uploadBandwidthSampler.startSampling();
rtmpCamera1.startStream(etUrl.getText().toString());
//You should stop adaptive bitrate before stopStream
uploadBandwidthSampler.stopSampling();
rtmpCamera1.stopStream();
Where videoBitrate is the value set to prepareVideo method.
//Let library auto calculate your max video bitrate related by your resolution.
AdapterBitrateParser.calculateMaxVideoBitrate(rtmpCamera1.getResolutionValue());
//Select your own max video bitrate (kbps)
AdapterBitrateParser.maxVideoBitrate = 1200;
//Set delay to check video bitrate (ms)
AdapterBitrateParser.DELAY = 1000;
//Set video bitrate interval that library will use to increase or decrease it (kbps).
AdapterBitrateParser.DIFFERENCE = 500;.