Module: RunApi::Seedance::Types

Defined in:: lib/runapi/seedance/types.rb

Overview

Type definitions and constants for Seedance video generation.

Constants are grouped by model generation: 1.5, 2.0/2.0-fast, and V1. Each generation has its own aspect ratio, resolution, and duration constraints reflecting different rendering capabilities.

Defined Under Namespace

Classes: AsyncTaskResponse, CompletedTextToVideoResponse, TextToVideoResponse, Video

Constant Summary collapse

V1_MODELS = V1-generation model identifiers: lite (low-cost), pro (high-quality), and pro-fast (speed-optimized).

%w[seedance-v1-lite seedance-v1-pro seedance-v1-pro-fast].freeze

MODELS = All supported model variants spanning 1.5, 2.0, and V1 generations.

(%w[seedance-1.5-pro seedance-2.0 seedance-2.0-fast] + V1_MODELS).freeze

ASPECT_RATIOS_1_5 = Aspect ratios for seedance-1.5-pro; required with every request.

%w[1:1 4:3 3:4 16:9 9:16 21:9].freeze

ASPECT_RATIOS_2 = Aspect ratios for 2.0/2.0-fast; includes “auto” for automatic selection.

[*ASPECT_RATIOS_1_5, "auto"].freeze

ASPECT_RATIOS_V1_LITE = Aspect ratios for seedance-v1-lite; uses 9:21 (not 21:9) for tall portrait.

%w[1:1 4:3 3:4 16:9 9:16 9:21].freeze

ASPECT_RATIOS_V1_PRO = Aspect ratios for seedance-v1-pro and seedance-v1-pro-fast.

%w[1:1 4:3 3:4 16:9 9:16 21:9].freeze

RESOLUTIONS_1_5 = Output resolutions for seedance-1.5-pro.

%w[480p 720p 1080p].freeze

RESOLUTIONS_SEEDANCE_2 = Output resolutions for seedance-2.0.

%w[480p 720p 1080p].freeze

RESOLUTIONS_SEEDANCE_2_FAST = Output resolutions for seedance-2.0-fast; capped at 720p for faster rendering.

%w[480p 720p].freeze

RESOLUTIONS_V1 = Output resolutions for seedance-v1-lite and seedance-v1-pro.

%w[480p 720p 1080p].freeze

RESOLUTIONS_V1_PRO_FAST = Output resolutions for seedance-v1-pro-fast; minimum 720p.

%w[720p 1080p].freeze

DURATIONS_1_5 = Allowed duration values (seconds) for seedance-1.5-pro; discrete choices only.

[4, 8, 12].freeze

DURATION_2_RANGE = Continuous duration range (seconds) for 2.0/2.0-fast; any integer 4-15 is accepted.

(4..15)

DURATIONS_V1 = Allowed duration values (seconds) for V1 models; 5 or 10.

[5, 10].freeze

SEED_RANGE = Valid seed range; -1 requests a random seed.

(-1..2_147_483_647)

PROMPT_MIN_LENGTH = Minimum prompt length in characters, enforced across all models.

PROMPT_MAX_LENGTH_1_5 = Maximum prompt length for seedance-1.5-pro.

PROMPT_MAX_LENGTH_2 = Maximum prompt length for 2.0/2.0-fast (up to 20 000 characters).

PROMPT_MAX_LENGTH_V1 = Maximum prompt length for V1 models (up to 10 000 characters).

FRAME_FIELDS = Fields that specify first/last frame images for frame-conditioned generation.

%i[first_frame_image_url last_frame_image_url].freeze

REFERENCE_FIELDS = Fields for reference-conditioned generation (images, videos, and audio).

%i[reference_image_urls reference_video_urls reference_audio_urls].freeze