Pros of OpenVidu

• Provides a complete WebRTC-based video conferencing solution
• Offers easy-to-use APIs and SDKs for multiple platforms
• Includes features like screen sharing, recording, and custom layouts

Cons of OpenVidu

• Limited to WebRTC protocol, which may not be ideal for all use cases
• Potentially higher latency compared to SRT in some scenarios
• Less flexibility for low-level network optimizations

Code Comparison

OpenVidu (JavaScript):

var OV = new OpenVidu();
var session = OV.initSession();
session.connect(token)
    .then(() => console.log("Connected"))
    .catch(error => console.error(error));

SRT (C++):

SRTSOCKET sock = srt_create_socket();
srt_connect(sock, "127.0.0.1", 9000, 1000);
char data[1500];
srt_recv(sock, data, sizeof(data));

OpenVidu focuses on providing a high-level API for video conferencing, while SRT offers low-level network transport functionality. OpenVidu is more suitable for quickly implementing video chat applications, whereas SRT is better for custom streaming solutions requiring fine-grained control over network performance.

Pros of obs-studio

• More comprehensive feature set for video recording and live streaming
• Larger community and ecosystem of plugins
• Cross-platform support (Windows, macOS, Linux)

Cons of obs-studio

• Larger codebase and potentially more complex to contribute to
• Focused on end-user application rather than a specific protocol

Code Comparison

obs-studio (C++):

bool OBSBasic::StreamingActive()
{
    if (!outputHandler)
        return false;
    return outputHandler->StreamingActive();
}

srt (C):

int srt_connect(SRTSOCKET u, const struct sockaddr* name, int namelen)
{
    SRTSOCKET_CHECK(u, CUDT::connect, -1);
    return CUDT::connect(u, name, namelen);
}

Summary

obs-studio is a full-featured streaming and recording software, while srt focuses on the Secure Reliable Transport protocol. obs-studio offers a more comprehensive solution for content creators but may be more complex. srt provides a specialized protocol implementation that can be integrated into various applications. The code examples show obs-studio's application-level logic versus srt's lower-level network operations.

Pros of FFmpeg

• Comprehensive multimedia framework with extensive codec support
• Large, active community and extensive documentation
• Versatile command-line interface for various multimedia tasks

Cons of FFmpeg

• Steeper learning curve due to its vast feature set
• Can be resource-intensive for complex operations

Code Comparison

FFmpeg example (video transcoding):

ffmpeg -i input.mp4 -c:v libx264 -preset slow -crf 22 -c:a copy output.mp4

SRT example (streaming):

srt_startup();
SRTSOCKET sock = srt_create_socket();
srt_connect(sock, "127.0.0.1", 1234);
srt_send(sock, buffer, size);

Key Differences

• FFmpeg is a comprehensive multimedia framework, while SRT focuses on low-latency streaming
• SRT is designed specifically for reliable data transport over unpredictable networks
• FFmpeg offers a wide range of audio/video processing capabilities, whereas SRT specializes in secure, reliable streaming

Use Cases

• FFmpeg: Transcoding, format conversion, video editing, and general multimedia processing
• SRT: Live video streaming, broadcast contribution, and remote production scenarios

Both projects serve different primary purposes but can be complementary in certain streaming workflows.

Pros of webrtc

• Designed for real-time communication with built-in support for audio/video
• Implements the full WebRTC stack, enabling peer-to-peer connections
• Active development with frequent updates and a large community

Cons of webrtc

• More complex to implement and use compared to SRT
• Higher overhead due to additional features and protocols
• May have higher latency in some scenarios

Code comparison

SRT (C++):

SRTSOCKET client = srt_create_socket();
srt_connect(client, "127.0.0.1", 9000);
srt_send(client, buffer, len);

webrtc (Go):

peerConnection, _ := webrtc.NewPeerConnection(config)
dataChannel, _ := peerConnection.CreateDataChannel("data", nil)
dataChannel.OnOpen(func() {
    dataChannel.Send([]byte("Hello"))
})

Summary

SRT focuses on low-latency video streaming over unreliable networks, while webrtc provides a comprehensive solution for real-time communication including audio, video, and data channels. SRT is simpler to implement but has fewer features, whereas webrtc offers more flexibility but with increased complexity. The choice between them depends on specific project requirements and use cases.

Pros of Janus-Gateway

• Versatile WebRTC server supporting various protocols and use cases
• Modular architecture allowing easy extension and customization
• Active community and regular updates

Cons of Janus-Gateway

• Higher complexity and steeper learning curve
• Potentially higher resource usage due to its comprehensive feature set

Code Comparison

Janus-Gateway (JavaScript plugin example):

static void my_plugin_init(janus_callbacks *callback, const char *config_path) {
    JANUS_LOG(LOG_INFO, "My plugin initialized!\n");
    // Plugin initialization code
}

SRT (C++ usage example):

srt_startup();
SRTSOCKET sock = srt_create_socket();
srt_connect(sock, "127.0.0.1", 1234);
// SRT connection and data transfer code

Summary

Janus-Gateway is a comprehensive WebRTC server with a focus on flexibility and extensibility, while SRT is a specialized protocol for low-latency video streaming. Janus-Gateway offers a wider range of features but may be more complex to set up and use. SRT, on the other hand, is more focused on its specific use case and may be simpler to implement for video streaming applications.

Pros of go2rtc

• Supports multiple streaming protocols (RTSP, WebRTC, MSE, HLS, etc.)
• Written in Go, offering good performance and cross-platform compatibility
• Includes a web interface for easy configuration and management

Cons of go2rtc

• Less mature and less widely adopted compared to SRT
• May have fewer advanced features for professional broadcasting
• Limited documentation and community support

Code Comparison

SRT (C++):

int main(int argc, char* argv[])
{
    srt_startup();
    SRTSOCKET sock = srt_create_socket();
    // ... (connection logic)
    srt_close(sock);
    srt_cleanup();
    return 0;
}

go2rtc (Go):

func main() {
    s := server.NewServer()
    s.AddHandler(rtsp.Handler)
    s.AddHandler(webrtc.Handler)
    s.Run()
}

Summary

SRT is a mature, industry-standard protocol for low-latency video streaming, while go2rtc is a more versatile streaming server supporting multiple protocols. SRT focuses on reliable transport over unreliable networks, whereas go2rtc offers a broader range of streaming options and an integrated web interface. The choice between them depends on specific project requirements and the desired level of protocol support.