# Facebook Live streaming

Media Blocks SDK .Net

Facebook Live supports RTMP (Real-Time Messaging Protocol), a protocol for streaming audio, video, and data over the Internet. RTMP is used to maintain low-latency connections and deliver high-quality live broadcasts on Facebook, making it a popular choice for streaming live events and interactions.

Use the FacebookLiveSinkSettings class to set the parameters.

# Block info

Name: FacebookLiveSinkBlock.

Pin direction Media type Pins count
Input audio audio/x-aac one
audio/x-mp3
Input video video/x-h264 one
video/x-h265

# The sample pipeline 

graph LR;
    VirtualVideoSourceBlock-->H264EncoderBlock;
    VirtualAudioSourceBlock-->AACEncoderBlock;
    H264EncoderBlock-->FacebookLiveSinkBlock;
    AACEncoderBlock-->FacebookLiveSinkBlock;

# Sample code 

// Pipeline
var pipeline = new MediaBlocksPipeline();

// video and audio sources
var virtualVideoSource = new VirtualVideoSourceSettings
{
    Width = 1280,
    Height = 720,
    FrameRate = VideoFrameRate.FPS_25,
};

var videoSource = new VirtualVideoSourceBlock(virtualVideoSource);

var virtualAudioSource = new VirtualAudioSourceSettings
{
     Channels = 2,
     SampleRate = 44100,
};

var audioSource = new VirtualAudioSourceBlock(virtualAudioSource);

// H264/AAC encoders
var h264Encoder = new H264EncoderBlock(new OpenH264EncoderSettings());
var aacEncoder = new AACEncoderBlock();

pipeline.Connect(videoSource.Output, h264Encoder.Input);
pipeline.Connect(audioSource.Output, aacEncoder.Input);

// Facebook Live sink
var facebookSink = new FacebookLiveSinkBlock(new FacebookLiveSinkSettings("long streaming key"));
pipeline.Connect(h264Encoder.Output, facebookSink.CreateNewInput(MediaBlockPadMediaType.Video));
pipeline.Connect(aacEncoder.Output, facebookSink.CreateNewInput(MediaBlockPadMediaType.Audio));

// Start
await pipeline.StartAsync();

# Sample applications

# Platforms

Windows, macOS, Linux, iOS, Android.