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AzureSoraSDK

Azure OpenAI "Sora" Video Generation & Prompt Enhancement SDK

.NET 6.0+ License: MIT

Sora SDK

📚 Documentation Wiki | 📋 Changelog | 📦 NuGet Package

This is a community-driven SDK for Azure OpenAI Sora video generation and prompt enhancement. The SDK provides a comprehensive .NET solution for generating high-quality videos using Azure OpenAI's Sora model, with built-in prompt enhancement capabilities to help you create more compelling video content.

Features

Core Features

  • Video Generation: Submit jobs, poll status, wait for completion, download MP4
  • Customizable: Width, height, and duration settings
  • Job Management: Check job status with detailed progress tracking
  • Enhanced Prompt: Get real-time AI-powered prompt improvement suggestions
  • API Versioning: Specify Azure OpenAI API version (default: preview)
  • Separate Configuration: Independent endpoint and API version for video generation and prompt enhancement
  • Dependency Injection: Full support for .NET DI with IServiceCollection extensions
  • Robust Error Handling: Specific exception types for different error scenarios
  • Retry Logic: Automatic retry with exponential backoff using Polly
  • Circuit Breaker: Prevents cascading failures with circuit breaker pattern
  • Logging: Integrated Microsoft.Extensions.Logging support
  • HttpClient Management: Proper HttpClient lifecycle management with IHttpClientFactory
  • Nullable Reference Types: Full C# nullable reference type support
  • Async Disposal: Implements IAsyncDisposable for proper resource cleanup
  • Configuration Validation: Comprehensive validation with data annotations
  • Unit Testing: Extensive test coverage with xUnit, Moq, and FluentAssertions
  • Thread Safety: Thread-safe operations with proper synchronization
  • Production-Ready: Built with enterprise requirements in mind
  • Type-Safe: Strongly typed interfaces and comprehensive error handling
  • Async/Await: Modern asynchronous programming patterns throughout
  • Configurable: Flexible configuration options for different environments
  • Testable: Designed with dependency injection and testing in mind
  • Customizable: Width, height, and duration settings
  • Robust Error Handling: Comprehensive exception types for different scenarios

Installation

# Install from NuGet
dotnet add package AzureSoraSDK

# Or via Package Manager
Install-Package AzureSoraSDK

Quick Start

Basic Usage (Legacy)

using AzureSoraSDK;
using System;

var endpoint   = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT")!;
var apiKey     = Environment.GetEnvironmentVariable("AZURE_OPENAI_KEY")!;
var deployment = "sora";

using var client = new SoraClient(endpoint, apiKey, deployment);

// Submit a video job
var jobId = await client.SubmitVideoJobAsync(
    prompt: "A serene sunset over mountain peaks, 10 seconds",
    width: 1280,
    height: 720,
    nSeconds: 10
);

// Wait for completion
var videoUri = await client.WaitForCompletionAsync(jobId);

// Download the video
await client.DownloadVideoAsync(videoUri, "output.mp4");

Using Aspect Ratio (New in v1.0.2)

using AzureSoraSDK;

// Generate video with aspect ratio and quality presets
var jobId = await client.SubmitVideoJobAsync(
    prompt: "A beautiful sunset over mountains",
    aspectRatio: "16:9",
    quality: "high",
    nSeconds: 10
);

// Calculate custom dimensions
var (width, height) = SoraClient.CalculateDimensionsFromAspectRatio("21:9", 2048);
// Returns: (2048, 880) - ultrawide cinema format

// Get common dimensions for aspect ratios
var (w, h) = SoraClient.GetCommonDimensions("1:1", "medium");
// Returns: (720, 720) - medium quality square video

Dependency Injection with Separate Configuration (Recommended)

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Configuration;
using AzureSoraSDK.Extensions;
using AzureSoraSDK.Interfaces;

// In your Startup.cs or Program.cs
var builder = WebApplication.CreateBuilder(args);

// Option 1: Separate configuration for video generation and prompt enhancement
builder.Services.AddAzureSoraSDK(
    configureSoraOptions: options =>
    {
        options.Endpoint = "https://your-sora-endpoint.openai.azure.com";
        options.ApiKey = "your-sora-api-key";
        options.DeploymentName = "sora";
        options.ApiVersion = "preview"; // Video generation API version
    },
    configurePromptEnhancerOptions: options =>
    {
        options.Endpoint = "https://your-chat-endpoint.openai.azure.com";
        options.ApiKey = "your-chat-api-key";
        options.DeploymentName = "gpt-4";
        options.ApiVersion = "2024-02-15-preview"; // Chat completions API version
        options.DefaultTemperature = 0.7;
        options.MaxTokensPerRequest = 1500;
    });

// Option 2: Configuration from appsettings.json with separate sections
builder.Services.AddAzureSoraSDK(builder.Configuration.GetSection("AzureSora"));

// Option 3: Shared configuration (backward compatible)
builder.Services.AddAzureSoraSDK(options =>
{
    options.Endpoint = "https://your-resource.openai.azure.com";
    options.ApiKey = "your-api-key";
    options.DeploymentName = "sora";
    options.ApiVersion = "preview";
    options.MaxRetryAttempts = 5;
    options.HttpTimeout = TimeSpan.FromMinutes(10);
});

// In your service/controller
public class VideoService
{
    private readonly ISoraClient _soraClient;
    private readonly IPromptEnhancer _promptEnhancer;
    private readonly ILogger<VideoService> _logger;

    public VideoService(
        ISoraClient soraClient, 
        IPromptEnhancer promptEnhancer,
        ILogger<VideoService> logger)
    {
        _soraClient = soraClient;
        _promptEnhancer = promptEnhancer;
        _logger = logger;
    }

    public async Task<string> GenerateVideoAsync(string prompt)
    {
        try
        {
            // Enhance the prompt first
            var suggestions = await _promptEnhancer.SuggestPromptsAsync(prompt, 3);
            var enhancedPrompt = suggestions.FirstOrDefault() ?? prompt;
            
            _logger.LogInformation("Generating video with prompt: {Prompt}", enhancedPrompt);

            // Submit video generation job
            var jobId = await _soraClient.SubmitVideoJobAsync(
                prompt: enhancedPrompt,
                width: 1920,
                height: 1080,
                nSeconds: 15
            );

            // Wait with timeout
            var videoUri = await _soraClient.WaitForCompletionAsync(
                jobId,
                pollIntervalSeconds: 3,
                maxWaitTime: TimeSpan.FromMinutes(30)
            );

            return videoUri.ToString();
        }
        catch (SoraValidationException ex)
        {
            _logger.LogError(ex, "Validation failed: {Errors}", ex.ValidationErrors);
            throw;
        }
        catch (SoraRateLimitException ex)
        {
            _logger.LogWarning("Rate limited. Retry after: {RetryAfter}", ex.RetryAfter);
            throw;
        }
    }
}

Configuration

appsettings.json with Separate Configuration

{
  "AzureSora": {
    "Endpoint": "https://your-sora-endpoint.openai.azure.com",
    "ApiKey": "your-sora-api-key",
    "DeploymentName": "sora",
    "ApiVersion": "preview",
    "HttpTimeout": "00:05:00",
    "MaxRetryAttempts": 3,
    "RetryDelay": "00:00:02",
    "DefaultPollingInterval": "00:00:05",
    "MaxWaitTime": "01:00:00"
  },
  "PromptEnhancer": {
    "Endpoint": "https://your-chat-endpoint.openai.azure.com",
    "ApiKey": "your-chat-api-key",
    "DeploymentName": "gpt-4",
    "ApiVersion": "2024-02-15-preview",
    "HttpTimeout": "00:02:00",
    "MaxRetryAttempts": 3,
    "RetryDelay": "00:00:01",
    "DefaultTemperature": 0.7,
    "DefaultTopP": 0.9,
    "MaxTokensPerRequest": 1000
  }
}

appsettings.json with Shared Configuration (Backward Compatible)

{
  "AzureSora": {
    "Endpoint": "https://your-resource.openai.azure.com",
    "ApiKey": "your-api-key",
    "DeploymentName": "sora",
    "ApiVersion": "preview",
    "HttpTimeout": "00:05:00",
    "MaxRetryAttempts": 3,
    "RetryDelay": "00:00:02",
    "DefaultPollingInterval": "00:00:05",
    "MaxWaitTime": "01:00:00"
  }
}

Environment Variables

# For Video Generation (SoraClient)
export AZURE_OPENAI_SORA_ENDPOINT="https://your-sora-endpoint.openai.azure.com"
export AZURE_OPENAI_SORA_KEY="your-sora-api-key"
export AZURE_OPENAI_SORA_DEPLOYMENT="sora"

# For Prompt Enhancement (PromptEnhancer)
export AZURE_OPENAI_CHAT_ENDPOINT="https://your-chat-endpoint.openai.azure.com"
export AZURE_OPENAI_CHAT_KEY="your-chat-api-key"
export AZURE_OPENAI_CHAT_DEPLOYMENT="gpt-4"

Advanced Usage

Direct Configuration with PromptEnhancerOptions

using AzureSoraSDK.Configuration;

// Create prompt enhancer with separate configuration
var promptEnhancerOptions = new PromptEnhancerOptions
{
    Endpoint = "https://your-chat-endpoint.openai.azure.com",
    ApiKey = "your-chat-api-key",
    DeploymentName = "gpt-4",
    ApiVersion = "2024-02-15-preview",
    DefaultTemperature = 0.5,
    DefaultTopP = 0.8,
    MaxTokensPerRequest = 2000,
    HttpTimeout = TimeSpan.FromMinutes(3)
};

var promptEnhancer = new PromptEnhancer(httpClient, promptEnhancerOptions, logger);

// Use different settings for different scenarios
var creativeSuggestions = await promptEnhancer.SuggestPromptsAsync(
    "A sunset scene", 
    maxSuggestions: 5
);

Error Handling

try
{
    var jobId = await client.SubmitVideoJobAsync(...);
}
catch (SoraAuthenticationException ex)
{
    // Handle authentication failures
    Console.WriteLine($"Auth failed: {ex.Message}");
}
catch (SoraValidationException ex)
{
    // Handle validation errors
    foreach (var error in ex.ValidationErrors ?? new())
    {
        Console.WriteLine($"{error.Key}: {string.Join(", ", error.Value)}");
    }
}
catch (SoraRateLimitException ex)
{
    // Handle rate limiting
    if (ex.RetryAfter.HasValue)
    {
        await Task.Delay(ex.RetryAfter.Value);
        // Retry the operation
    }
}
catch (SoraTimeoutException ex)
{
    // Handle timeouts
    Console.WriteLine($"Operation timed out after {ex.Timeout}");
}
catch (SoraNotFoundException ex)
{
    // Handle not found errors
    Console.WriteLine($"Resource not found: {ex.ResourceId}");
}

Video Generation with Metadata

// Submit a video generation job with metadata
var jobId = await client.SubmitVideoJobAsync(
    prompt: "A futuristic cityscape at night with flying cars",
    width: 1920,
    height: 1080,
    nSeconds: 20
);

// The VideoGenerationRequest model also supports metadata:
var request = new VideoGenerationRequest
{
    Prompt = "A beautiful sunset over mountains",
    Width = 1920,
    Height = 1080,
    NSeconds = 15,
    Metadata = new Dictionary<string, string>
    {
        ["project"] = "marketing-campaign",
        ["version"] = "v1"
    }
};

// Validate before submission
request.Validate();

Progress Monitoring

var jobId = await client.SubmitVideoJobAsync(...);

while (true)
{
    var details = await client.GetJobStatusAsync(jobId);
    
    Console.WriteLine($"Status: {details.Status}");
    
    if (details.ProgressPercentage.HasValue)
    {
        Console.WriteLine($"Progress: {details.ProgressPercentage}%");
    }
    
    if (details.EstimatedTimeRemaining.HasValue)
    {
        Console.WriteLine($"ETA: {details.EstimatedTimeRemaining}");
    }
    
    if (details.Status == JobStatus.Succeeded)
    {
        Console.WriteLine($"Video URL: {details.VideoUrl}");
        break;
    }
    else if (details.Status == JobStatus.Failed)
    {
        Console.WriteLine($"Failed: {details.ErrorMessage} (Code: {details.ErrorCode})");
        break;
    }
    
    await Task.Delay(TimeSpan.FromSeconds(5));
}

Prompt Enhancement

var enhancer = serviceProvider.GetRequiredService<IPromptEnhancer>();

// Get multiple suggestions
var suggestions = await enhancer.SuggestPromptsAsync(
    "A sunset scene",
    maxSuggestions: 5
);

foreach (var suggestion in suggestions)
{
    Console.WriteLine($"- {suggestion}");
}

// Output might be:
// - A vibrant sunset over the ocean with golden rays reflecting on calm waters
// - A dramatic sunset behind mountain silhouettes with purple and orange clouds  
// - A peaceful sunset in a meadow with warm light casting long shadows
// - A tropical sunset with palm trees swaying in the gentle breeze
// - An urban sunset with city skyline silhouetted against colorful sky

Testing

The SDK includes comprehensive unit tests. To run tests:

cd src/AzureSoraSDK.Tests
dotnet test

# With coverage
dotnet test --collect:"XPlat Code Coverage"

# Run specific tests
dotnet test --filter "FullyQualifiedName~SoraClientTests"

API Reference

ISoraClient

  • SubmitVideoJobAsync - Submit a video generation job
  • GetJobStatusAsync - Get current job status and details
  • WaitForCompletionAsync - Wait for job completion with polling
  • DownloadVideoAsync - Download generated video to local file

IPromptEnhancer

  • SuggestPromptsAsync - Get AI-powered prompt suggestions

Configuration Options

SoraClientOptions (Video Generation)

  • Endpoint - Azure OpenAI endpoint URL for video generation
  • ApiKey - API key for video generation authentication
  • DeploymentName - Name of your Sora deployment
  • ApiVersion - API version for video generation (default: preview)
  • HttpTimeout - HTTP request timeout (default: 5 minutes)
  • MaxRetryAttempts - Max retry attempts (default: 3)
  • RetryDelay - Base delay between retries (default: 2 seconds)
  • DefaultPollingInterval - Job status polling interval (default: 5 seconds)
  • MaxWaitTime - Maximum wait time for job completion (default: 1 hour)

PromptEnhancerOptions (Prompt Enhancement)

  • Endpoint - Azure OpenAI endpoint URL for chat completions
  • ApiKey - API key for chat completions authentication
  • DeploymentName - Name of your chat completion deployment (e.g., gpt-4)
  • ApiVersion - API version for chat completions (default: 2024-02-15-preview)
  • HttpTimeout - HTTP request timeout (default: 2 minutes)
  • MaxRetryAttempts - Max retry attempts (default: 3)
  • RetryDelay - Base delay between retries (default: 1 second)
  • DefaultTemperature - Temperature for prompt enhancement (default: 0.7)
  • DefaultTopP - Top-p value for prompt enhancement (default: 0.9)
  • MaxTokensPerRequest - Maximum tokens per request (default: 1000)

Requirements

  • .NET 6.0 or higher
  • Azure OpenAI resource with Sora model deployment
  • Valid API key with appropriate permissions

Documentation

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT © Hazem Ali

Changelog

See CHANGELOG.md for a detailed list of changes in each release.

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C# SDK for Azure Sora

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Jun 10, 2025
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