bytedance/seedance-2.5-r2v

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Schema

[Core Function] Seedance 2.5 R2V is ByteDance Dreamina Seedance 2.5 reference-to-video generation from up to 30 reference images. [Strengths] It supports optional reference audio, fixed or adaptive aspect ratio, 480p/720p/1080p, 4-30 second duration, and mp4 or mov output. [Best For] Highly recommended for: multi-image character consistency and image-led storytelling on Seedance 2.5. [Limitations] Do NOT send first_frame_image, last_frame_image, or video_urls. Do NOT use audio_urls alone. Do NOT use this model when the user requires 4k output. [Routing] Prefer this model when the user provides reference images without a driving video. Use Seedance 2.5 I2V for first-frame or first-and-last-frame animation, Seedance 2.5 T2V for text-only requests, and Seedance 2.5 V2V when reference video is required.

$0.1030~$0.5690/sec
image-to-video

Input

Optional. Video description. Maximum 10000 characters. Use @Image1 and @Audio1 when referencing inputs.
Required. Reference image URLs (1-30). Do not pass first_frame_image or last_frame_image.
Hint: Drag and drop files, paste from clipboard (Ctrl/Cmd+V), or provide a URL.
Optional. Reference audio URLs (1-10). Must accompany reference_images; audio-only is not supported.
Hint: Drag and drop files, paste from clipboard (Ctrl/Cmd+V), or provide a URL.
Whether to keep the camera fixed during generation
Video duration in seconds. Allowed values are integers from 4 to 30
Task expiration time in seconds
Whether to generate an audio track with the video
Task type hint for multimodal reference only (requires `reference_images`). Do not pass this field for first-frame or first-last-frame generation. `auto` infers the type from the prompt and inputs. `reference` generates a new video from reference images; `ratio` and `duration` have no special constraints.
Output video container. mp4 for general playback; mov for higher color precision in editing workflows
Aspect ratio of the generated video.
Specifies the resolution tier for the generated video. Seedance 2.5 supports 480p, 720p, and 1080p
Whether to return the last frame of the generated video
Random number seed for reproducibility. Use -1 for random. Identical seeds cannot guarantee completely identical results

Result

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README

Attributes

Parameters

Name Description Type Required Enums
prompt Optional. Video description. Maximum 10000 characters. Use @Image1 and @Audio1 when referencing inputs. string No -
reference_images Required. Reference image URLs (1-30). Do not pass first_frame_image or last_frame_image. string[] Yes -
audio_urls Optional. Reference audio URLs (1-10). Must accompany reference_images; audio-only is not supported. string[] No -
camera_fixed Whether to keep the camera fixed during generation boolean No true, false
duration Video duration in seconds. Allowed values are integers from 4 to 30 integer No 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
execution_expires_after Task expiration time in seconds integer No -
generate_audio Whether to generate an audio track with the video boolean No true, false
omni_reference_task_type Task type hint for multimodal reference only (requires reference_images). Do not pass this field for first-frame or first-last-frame generation. auto infers the type from the prompt and inputs. reference generates a new video from reference images; ratio and duration have no special constraints. string No auto, reference
output_format Output video container. mp4 for general playback; mov for higher color precision in editing workflows string No mp4, mov
ratio Aspect ratio of the generated video. string No 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, adaptive
resolution Specifies the resolution tier for the generated video. Seedance 2.5 supports 480p, 720p, and 1080p string No 480p, 720p, 1080p
return_last_frame Whether to return the last frame of the generated video boolean No true, false
seed Random number seed for reproducibility. Use -1 for random. Identical seeds cannot guarantee completely identical results integer No -

Pricing

Unit: $/sec

Dimension Pricing
resolution: 480p 0.1030
resolution: 720p 0.2310
resolution: 1080p 0.5690