Runway

Features 🔥

• Fully generated C# SDK based on official Runway OpenAPI specification using AutoSDK
• Same day update to support new features
• Updated and supported automatically if there are no breaking changes
• All modern .NET features - nullability, trimming, NativeAOT, etc.

Usage

Image to Video

using Runway;

using var client = new RunwayClient(apiKey);

var response = await client.StartGenerating.CreateImageToVideoAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestGen3aTurbo
    {
        PromptImage = "https://example.com/photo.jpg",
        PromptText = "The girl smiles a little",
        Seed = 999999999,
        Model = "gen3a_turbo",
        Duration = 5,
        Ratio = RequestGen3aTurboRatio.x1280_768,
    });

// Poll until complete
Response taskDetail;
do
{
    taskDetail = await client.TaskManagement.GetTasksByIdAsync(
        id: response.Id,
        xRunwayVersion: "2024-11-06");
    await Task.Delay(TimeSpan.FromSeconds(10));
}
while (!taskDetail.IsFailed && !taskDetail.IsSucceeded && !taskDetail.IsCancelled);

foreach (var output in taskDetail.Succeeded!.Output)
{
    Console.WriteLine($"Video URL: {output}");
}

Text to Video

Generate video from a text prompt using Veo 3.1 Fast.

var response = await client.StartGenerating.CreateTextToVideoAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestVeo31Fast2
    {
        PromptText = "A calm ocean with gentle waves under a starlit sky",
        Ratio = RequestVeo31FastRatio2.x1280_720,
        Duration = 5,
    });

Text to Image

Generate images from text using Gen4 Image Turbo.

var response = await client.StartGenerating.CreateTextToImageAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestGen4ImageTurbo
    {
        PromptText = "A vibrant coral reef teeming with tropical fish",
        Ratio = RequestGen4ImageTurboRatio.x1280_720,
        ReferenceImages = [],
    });

Text to Speech

Choose from 48 preset voices including Maya, Arjun, Eleanor, Bernard, and more.

var response = await client.StartGenerating.CreateTextToSpeechAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestElevenMultilingualV2
    {
        PromptText = "Hello! Welcome to Runway's text-to-speech API.",
        Voice = new RequestElevenMultilingualV2VoiceRunwayPresetVoice
        {
            PresetId = RequestElevenMultilingualV2VoiceRunwayPresetVoicePresetId.Maya,
        },
    });

Sound Effects

Generate sound effects from text descriptions (0.5–30 seconds, optional seamless looping).

var response = await client.StartGenerating.CreateSoundEffectAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestElevenTextToSoundV2
    {
        PromptText = "A thunderstorm with heavy rain and distant thunder rumbling",
        Duration = 10.0,
        Loop = false,
    });

Voice Dubbing

Dub audio to a target language with automatic voice cloning.

var response = await client.StartGenerating.CreateVoiceDubbingAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestElevenVoiceDubbing
    {
        AudioUri = "https://example.com/audio.mp3",
        TargetLang = RequestElevenVoiceDubbingTargetLang.Es,
        DisableVoiceCloning = false,
        DropBackgroundAudio = false,
    });

Speech to Speech

Transform the voice in an audio file while preserving the original speech content.

var response = await client.StartGenerating.CreateSpeechToSpeechAsync(
    xRunwayVersion: "2024-11-06",
    request: new RequestElevenMultilingualStsV2
    {
        Media = new RequestElevenMultilingualStsV2MediaSpeechToSpeechAudio
        {
            Uri = "https://example.com/speech.mp3",
        },
        Voice = new RequestElevenMultilingualStsV2VoiceRunwayPresetVoice
        {
            PresetId = RequestElevenMultilingualStsV2VoiceRunwayPresetVoicePresetId.Eleanor,
        },
        RemoveBackgroundNoise = true,
    });

Error Handling and Cancellation

All generation APIs return async tasks. Check for failures or cancel running tasks.

// Check for failures with machine-readable error codes
if (taskDetail.IsFailed)
{
    Console.WriteLine($"Failure: {taskDetail.Failed!.Failure}");
    Console.WriteLine($"Code: {taskDetail.Failed.FailureCode}");
}

// Cancel a running task or delete a completed one
await client.TaskManagement.DeleteTasksByIdAsync(
    id: taskId,
    xRunwayVersion: "2024-11-06");

Support

Priority place for bugs: https://github.com/tryAGI/Runway/issues
Priority place for ideas and general questions: https://github.com/tryAGI/Runway/discussions
Discord: https://discord.gg/Ca2xhfBf3v

Acknowledgments

This project is supported by JetBrains through the Open Source Support Program.