Enter video description (3-2500 characters)...
Click to upload or drag and drop
Supported formats: JPEG, PNG, WEBP Maximum file size: 10MB; Maximum files: 2
File 1
Upload 0-2 images. Leave empty to generate video from text only.
Select the frame dimensions. Default is 1:1. If you uploaded an image, the video result will be the same size as the image, and this parameter will be invalid.
Standard (480p) / High (720p)
video duration
Enable to keep the camera view static and stable. Disable for dynamic camera movement.
Enable to create sound effects for the video (Additional cost applies).
A configurable parameter. Defaults to true in the Playground.
Explore different use cases and parameter configurations
Complete guide to using bytedance/seedance-1.5-pro
Seedance 1.5 Pro API – ByteDance Audio-Video Generation on Uptech API
Generate cinematic video with synchronized voice, sound effects, and music using ByteDance Seedance 1.5 Pro on Uptech API.
Seedance 1.5 Pro T2V and I2V API on Uptech API
Seedance 1.5 Pro Text-to-Video API for Cinematic Creation
Seedance 1.5 Pro Text-to-Video API lets you generate full cinematic videos directly from text prompts. Using Seedance AI API, scenes, camera movement, characters, and native audio are created in one pass, making it suitable for storytelling, marketing, and scripted video workflows.
Seedance 1.5 Pro Image-to-Video API with First and Last Frame Control
Seedance 1.5 Pro Image-to-Video API transforms still images into motion video with consistent characters, camera movement, and synchronized audio. It supports first and last frame control, allowing you to define how a scene starts and ends while preserving visual style and composition. If you need longer clips, native 4K output, or video-to-video editing on top of these image-to-video controls, consider stepping up to the newer Seedance 2.5 API.
Key Features of Seedance 1.5 Pro API on Uptech API
Native Audio Generation with Seedance 1.5 Pro API
With Seedance 1.5 Pro API on Uptech API, you can generate video and audio at the same time. The Seedance AI API creates voices, sound effects, and background music directly with the visuals, keeping everything in sync. This avoids manual dubbing and gives you consistent audio-visual output.
Film-Grade Cinematography with ByteDance Seedance 1.5
Seedance 1.5 Pro on Uptech API gives you film-style camera movement, lighting, and framing. Using the ByteDance Seedance 1.5 video API, you can produce close-ups, wide shots, and smooth camera motion that make your Seedance AI video output look more polished and realistic.
Strong Storytelling and Emotional Expression with Seedance V1.5 Pro
Seedance 1.5 Pro API helps you keep scenes, characters, and emotions consistent across a video. The Seedance AI API understands your prompt intent and generates natural expressions, dialogue, and actions, so your ByteDance Seedance videos stay coherent from start to finish.
Core Highlights of Audio Capabilities in Seedance 1.5 Pro API
Automatic Audio Matching with Seedance 1.5 Pro Audio-Video API
Seedance 1.5 Pro automatically generates audio that fits what happens on screen. Using the Seedance AI API, voices, ambient sounds, and effects are placed in the right moments, keeping audio natural and balanced without extra editing or manual sound alignment.
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Multi-Person Dialogue with Seedance 1.5 Pro API
Seedance 1.5 Pro API supports monologue and multi-person conversations in a single video. It keeps each speaker’s voice, timing, and lip-sync aligned, allowing Seedance AI API to generate natural dialogue between multiple characters within one continuous scene.
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Multilingual and Dialect Support in ByteDance Seedance 1.5
ByteDance Seedance 1.5 Pro supports multiple languages and regional dialects, including English, Mandarin, Japanese, Korean, Spanish, Indonesian, Shaanxi dialect, and Sichuan dialect. Seedance AI API keeps pronunciation, tone, and rhythm consistent for realistic local speech.
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Emotional Voice Generation with Seedance V1.5 Pro
Seedance V1.5 Pro adjusts voice tone and delivery based on prompt. Seedance AI API adds emotion to dialogue and sound, helping ByteDance Seedance videos express feelings like tension, warmth, or excitement in a clear and realistic way.
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BGM Style and Atmosphere Control in Seedance AI API
With Seedance 1.5 Pro, background music and ambient sound are generated to match scene. Seedance AI API selects BGM style, mood, and sound effects that support video’s visual rhythm and overall atmosphere.
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Accurate Lip-Sync with ByteDance Seedance Pro Audio-Video Engine
Seedance 1.5 Pro maintains precise alignment between speech and visual mouth movement. Audio and video are generated together, keeping dialogue, expressions, and timing consistent across every frame.
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How to Use Seedance 1.5 Pro API on Uptech API
Step 1 – Get API Key and Choose Seedance V1.5 Pro ModeCreate Uptech API account, generate API key, then choose Seedance V1.5 Pro endpoint for Text-to-Video or Image-to-Video on Uptech API.
Step 1 – Get API Key and Choose Seedance V1.5 Pro Mode
Step 2 – Build Request for Seedance 1.5 Pro T2V or I2VSend text prompt for Seedance 1.5 Pro Text-to-Video API, or upload image for Seedance 1.5 Pro Image-to-Video API. Set basic options like video duration and resolution, then let Seedance AI API generate scene with matched visuals and audio.
Step 2 – Build Request for Seedance 1.5 Pro T2V or I2V
Step 3 – Run Job and Get Seedance AI VideoRun generation request and wait while Seedance 1.5 Pro creates video. When process finishes, you receive ready-to-use video. Download result or use output link directly in app, website, or content workflow.
Step 3 – Run Job and Get Seedance AI Video
Use Cases for Seedance 1.5 Pro API on Uptech API
Film and Cinematic Video Production with ByteDance Seedance 1.5
Use Seedance 1.5 Pro API to turn scripts, storyboards, or prompts into short cinematic scenes with native audio. Seedance AI API supports camera movement, character consistency, and emotional acting, making it suitable for short films, trailers, and visual storytelling.
News Summary and Storytelling with Seedance AI API
Seedance 1.5 Pro converts written news, articles, or headlines into short video stories. With ByteDance Seedance video API, visuals, voice narration, and subtitles are generated together, allowing fast creation of news explainers and media-ready video content.
Product Marketing Videos Using Seedance V1.5 Pro
Seedance V1.5 Pro helps create product demo and promotional videos from product descriptions and images. Seedance AI API generates visuals, spoken explanations, and background music in one pass, supporting e-commerce, social ads, and brand content workflows.
Previsualization and Pitch Videos with Seedance 1.5 Pro
Seedance 1.5 Pro API lets creators produce visual concepts from scripts or ideas. With ByteDance Seedance API, teams generate animated scenes with audio to preview camera angles, pacing, and mood before full production begins.