--- title: Use InfiniteTalk in WorkBuddy — Talking Avatar via RunAPI | RunAPI description: Generate lip-synced talking avatar videos with InfiniteTalk in WorkBuddy. Add the RunAPI MCP server, prompt the workbench agent with audio and a face image. url: https://runapi.ai/workbuddy-infinitetalk.md canonical: https://runapi.ai/workbuddy-infinitetalk locale: en site: RunAPI image: https://runapi.ai/assets/opengraph-bfaaa0f0.png alternates: en: https://runapi.ai/workbuddy-infinitetalk zh-CN: https://runapi.ai/zh-CN/workbuddy-infinitetalk es: https://runapi.ai/es/workbuddy-infinitetalk ja: https://runapi.ai/ja/workbuddy-infinitetalk de: https://runapi.ai/de/workbuddy-infinitetalk fr: https://runapi.ai/fr/workbuddy-infinitetalk pt-BR: https://runapi.ai/pt-BR/workbuddy-infinitetalk ko: https://runapi.ai/ko/workbuddy-infinitetalk it: https://runapi.ai/it/workbuddy-infinitetalk nl: https://runapi.ai/nl/workbuddy-infinitetalk pl: https://runapi.ai/pl/workbuddy-infinitetalk tr: https://runapi.ai/tr/workbuddy-infinitetalk zh-TW: https://runapi.ai/zh-TW/workbuddy-infinitetalk zh-HK: https://runapi.ai/zh-HK/workbuddy-infinitetalk ar: https://runapi.ai/ar/workbuddy-infinitetalk x-default: https://runapi.ai/workbuddy-infinitetalk model: infinitetalk --- > HTML version: https://runapi.ai/workbuddy-infinitetalk > Site index for agents: https://runapi.ai/llms.txt # Use InfiniteTalk in WorkBuddy. InfiniteTalk generates lip-synced talking avatar videos from an audio file and a face image. Add RunAPI as an MCP server in WorkBuddy, prompt the workbench agent with the audio and image URLs, and the InfiniteTalk tool returns a finished video URL — the async polling happens behind the scenes. - [Get API Key](https://runapi.ai/login) - [Read the docs](https://runapi.ai/docs/guides) one MCP server · audio to video tool · async handled for you ### Prompt ```text Generate a talking avatar video with InfiniteTalk using the runapi MCP server. Requirements: - Use the RunAPI MCP tool for audio-to-video generation. - Set model to "infinitetalk-from-audio". - Set source_audio_url to https://example.com/speech.mp3. - Set source_image_url to https://example.com/avatar.jpg. - Prompt: "A professional presenter delivering a product overview". - The task is async — wait until it completes, then give me the video URL. ``` ### MCP config ```bash { "mcp_servers": { "runapi": { "url": "https://runapi.ai/mcp", "transport": "streamable_http", "headers": { "Authorization": "Bearer $RUNAPI_API_KEY" } } } } ``` ### Response ```json { "task_id": "tsk_abc123", "status": "completed", "model": "infinitetalk-from-audio", "output": { "video_url": "https://media.runapi.ai/outputs/tsk_abc123.mp4" } } ``` ## Use InfiniteTalk in WorkBuddy in three steps 1. **Add the RunAPI MCP server** - Register an MCP server named runapi in WorkBuddy pointing at https://runapi.ai/mcp over streamable HTTP, with your key read from the RUNAPI_API_KEY environment variable. If RunAPI is already connected for chat, the same server exposes InfiniteTalk — no extra setup. `export RUNAPI_API_KEY=runapi_xxx # MCP server: runapi → https://runapi.ai/mcp ` 2. **Prompt the workbench agent** - Give WorkBuddy the audio URL, the face image URL, and a short description of the desired output. The agent calls the InfiniteTalk audio-to-video tool with model set to infinitetalk-from-audio and fills in source_audio_url, source_image_url, and prompt. `"Turn speech.mp3 + avatar.jpg into a talking avatar video"` 3. **Let the tool return the result** - The RunAPI MCP tool creates the task, waits through the async generation until the status is completed, and hands the lip-synced video URL back into the workbench — no manual polling needed. `status: completed → video_url` ## InfiniteTalk parameters | Parameter | Type | Description | | --- | --- | --- | | `model` | `string` | Required. Use infinitetalk-from-audio. | | `source_audio_url` | `string` | Required. URL of the source audio file to lip-sync. | | `source_image_url` | `string` | Required. URL of the face or avatar image to animate. | | `prompt` | `string` | Required. Text description of the desired video output. Max 5000 characters. | | `output_resolution` | `string` | Optional. Output video resolution. Accepted values: 480p, 720p. Defaults to 480p. | | `seed` | `integer` | Optional. Reproducibility seed. Integer between 10000 and 1000000. | ## What is InfiniteTalk on WorkBuddy? InfiniteTalk is an audio-driven talking avatar model that turns a single photo and an audio file into a lip-synced video with head movement, facial expressions, and body posture. Through the runapi MCP server, WorkBuddy agents call it as a standard tool to produce unlimited-length talking head videos without filming equipment or motion capture rigs. ## InfiniteTalk use cases - **Podcast-to-video conversion** - Feed podcast audio and a host photo to generate a talking avatar video, turning audio-only episodes into visual content for YouTube or social media. - **Educational and tutorial videos** - Create lecture or tutorial videos from a single instructor photo and recorded narration, producing long-form talking head content without a camera setup. - **Digital spokesperson for marketing** - Build a branded digital presenter from one reference image, then generate spokesperson videos in multiple languages by swapping the audio track. ## InfiniteTalk + WorkBuddy questions ### Can I use InfiniteTalk in WorkBuddy? Yes. WorkBuddy speaks MCP natively, so add RunAPI as an MCP server named runapi with your RUNAPI_API_KEY, then prompt the agent with an audio URL and a face image URL. The InfiniteTalk tool handles the generation and returns the video. ### Can InfiniteTalk generate unlimited-length talking videos from a single photo? Yes. InfiniteTalk uses a sparse-frame approach that supports unlimited-length video generation from one reference image. The output length is determined by the duration of your source audio file. ### Does InfiniteTalk need a separate API key in WorkBuddy? No. The same RUNAPI_API_KEY behind the runapi MCP server covers InfiniteTalk along with every other RunAPI model. All usage draws from one pooled credit balance. ### Is InfiniteTalk synchronous or asynchronous? Asynchronous. The task returns a task_id immediately, and the RunAPI MCP tool keeps checking the status until the video is ready — WorkBuddy just receives the finished URL, so you never poll by hand. ### What does InfiniteTalk cost on RunAPI? InfiniteTalk uses per-task billing. Check the RunAPI pricing page for current rates. Credits are deducted from the same balance used for all RunAPI models. - [WorkBuddy setup guide →](https://runapi.ai/workbuddy.md) - Not connected yet? Start with the RunAPI MCP setup guide for WorkBuddy. - [InfiniteTalk on RunAPI →](https://runapi.ai/models/infinitetalk.md) - See InfiniteTalk variants, pricing, and API docs. ## Try InfiniteTalk in WorkBuddy today. Get a free RunAPI key, add the MCP server to WorkBuddy, and generate lip-synced talking avatar videos from any audio file. [Browse models →](https://runapi.ai/models.md) --- ## More from RunAPI - [Home](https://runapi.ai/.md) ### Product - [Model Catalog](https://runapi.ai/models.md) - [Pricing](https://runapi.ai/pricing.md) - [Providers](https://runapi.ai/models#all-models) ### Developers - [Documentation](https://runapi.ai/docs/guides) - [SDKs](https://runapi.ai/sdk.md) - [CLI](https://runapi.ai/cli.md) - [MCP Server](https://runapi.ai/mcp.md) - [x402](https://runapi.ai/x402.md) ### Guides - [Claude Code vs Cursor](https://runapi.ai/claude-code-vs-cursor.md) - [Cursor API Setup](https://runapi.ai/cursor-api-setup.md) - [RunAPI vs OpenRouter](https://runapi.ai/openrouter-alternative.md) ### Company - [Enterprise](https://runapi.ai/contact.md) - [Contact](https://runapi.ai/contact.md) ### Legal - [Terms](https://runapi.ai/terms.md) - [Privacy](https://runapi.ai/privacy.md) - [Site index for agents](https://runapi.ai/llms.txt) Contact: contact@runapi.ai ## Structured data ```json [ { "@context": "https://schema.org", "inLanguage": "en", "@type": "WebSite", "name": "RunAPI", "url": "https://runapi.ai/", "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://runapi.ai/models?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "Organization", "name": "RunAPI", "url": "https://runapi.ai/", "logo": { "@type": "ImageObject", "url": "https://runapi.ai/icon.svg" }, "sameAs": [ "https://github.com/runapi-ai" ] }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "SoftwareApplication", "name": "RunAPI InfiniteTalk for WorkBuddy", "applicationCategory": "DeveloperApplication", "description": "Generate lip-synced talking avatar videos with InfiniteTalk in WorkBuddy. Add the RunAPI MCP server, prompt the workbench agent with audio and a face image.", "url": "https://runapi.ai/workbuddy-infinitetalk" }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Can I use InfiniteTalk in WorkBuddy?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. WorkBuddy speaks MCP natively, so add RunAPI as an MCP server named runapi with your RUNAPI_API_KEY, then prompt the agent with an audio URL and a face image URL. The InfiniteTalk tool handles the generation and returns the video." } }, { "@type": "Question", "name": "Can InfiniteTalk generate unlimited-length talking videos from a single photo?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. InfiniteTalk uses a sparse-frame approach that supports unlimited-length video generation from one reference image. The output length is determined by the duration of your source audio file." } }, { "@type": "Question", "name": "Does InfiniteTalk need a separate API key in WorkBuddy?", "acceptedAnswer": { "@type": "Answer", "text": "No. The same RUNAPI_API_KEY behind the runapi MCP server covers InfiniteTalk along with every other RunAPI model. All usage draws from one pooled credit balance." } }, { "@type": "Question", "name": "Is InfiniteTalk synchronous or asynchronous?", "acceptedAnswer": { "@type": "Answer", "text": "Asynchronous. The task returns a task_id immediately, and the RunAPI MCP tool keeps checking the status until the video is ready — WorkBuddy just receives the finished URL, so you never poll by hand." } }, { "@type": "Question", "name": "What does InfiniteTalk cost on RunAPI?", "acceptedAnswer": { "@type": "Answer", "text": "InfiniteTalk uses per-task billing. Check the RunAPI pricing page for current rates. Credits are deducted from the same balance used for all RunAPI models." } } ] }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "HowTo", "name": "How to use InfiniteTalk in WorkBuddy via RunAPI", "description": "Add RunAPI as an MCP server in WorkBuddy, hand the agent an audio file and a face image, and receive the lip-synced video from the InfiniteTalk tool.", "step": [ { "@type": "HowToStep", "position": 1, "name": "Add the RunAPI MCP server", "text": "Register an MCP server named runapi in WorkBuddy pointing at https://runapi.ai/mcp over streamable HTTP, with your key read from the RUNAPI_API_KEY environment variable. If RunAPI is already connected for chat, the same server exposes InfiniteTalk — no extra setup.", "url": "https://runapi.ai/workbuddy-infinitetalk#how-step-1" }, { "@type": "HowToStep", "position": 2, "name": "Prompt the workbench agent", "text": "Give WorkBuddy the audio URL, the face image URL, and a short description of the desired output. The agent calls the InfiniteTalk audio-to-video tool with model set to infinitetalk-from-audio and fills in source_audio_url, source_image_url, and prompt.", "url": "https://runapi.ai/workbuddy-infinitetalk#how-step-2" }, { "@type": "HowToStep", "position": 3, "name": "Let the tool return the result", "text": "The RunAPI MCP tool creates the task, waits through the async generation until the status is completed, and hands the lip-synced video URL back into the workbench — no manual polling needed.", "url": "https://runapi.ai/workbuddy-infinitetalk#how-step-3" } ] }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://runapi.ai/" }, { "@type": "ListItem", "position": 2, "name": "RunAPI InfiniteTalk for WorkBuddy", "item": "https://runapi.ai/workbuddy-infinitetalk" } ] } ] ```