# Video Synthesis

The 2D digital human video synthesis service provides the ability to select a 2D digital human avatar model, add text or audio to synthesize into a 2D virtual digital human video in MP4/WebM format, and download the video content through the returned video link.

  • Avatar Configuration
    • Supports specifying the 2D digital human avatar to be used for this video synthesis via parameters. The system provides several default 2D digital human avatar models for users to choose from. For details, please contact operations to set up your account.
  • Voice Configuration
    • The system supports two types of voice configuration:
      • Upload recording files: Supports online recording upload or selecting corresponding audio files. The audio will undergo noise reduction processing, and the original voice will be used for the final synthesized video content.
      • Upload text + select voice: Supports specifying the speaker voice for this video synthesis via parameters, as well as adjusting speech rate, pitch, and volume. The system provides several default TTS personal voice models for users to choose from. The specified voice will read the corresponding text content, and this audio will be used for video synthesis.
  • Digital Human Driving
    • Supports digital human expression and lip-sync driving.
  • Video Encoding Information
    • Encoding format: H264
    • Frame rate: 25FPS
  • Video Format
    • Currently supports MP4/WebM video formats. Video duration is determined by the content selected during video synthesis.
  • Video Resolution
    • Supports specifying the output video resolution when creating a video synthesis task. Recommended options: 480p, 720p, 1080p
  • Subtitles
    • Supports generating subtitle files matching the text or voice content input by the user
  • Custom Foreground/Background/Title Text
    • Supports specifying the video background image via URL; image formats support jpg and png
    • Supports specifying the video foreground image via URL; image formats support jpg and png
    • Supports specifying the font, font size, and position of title text in the video via parameters
  • Custom Character Beauty Effects
    • Supports adjusting character beauty effects via parameters, including: whitening/skin smoothing/face shaping/eye shaping/hairline adjustment/apple muscle adjustment/nose adjustment/chin adjustment/mouth adjustment/philtrum adjustment/head shrinking/contrast/saturation/clarity/sharpening and over a dozen other parameter adjustment features. For details, please refer to the Parameter Description (opens new window) for usage rules
  • Maximum Storage Duration
    • The PaaS platform supports 7-day online storage; timely transfer is required, as generated content will no longer be available for download after 7 days.

# Video Synthesis Sequence Diagram

Video Composite Process

# API Reference

To call all API services on the platform, users must access the service endpoint: aigc.softsugar.com, and include the token information in the request header.

# Create Video Synthesis Task

# API Description

Invokes algorithmic capabilities based on the content uploaded by the user for video synthesis, ultimately returning MP4/WebM format video files for user download. The PaaS platform supports 7-day online storage; timely transfer is required, as generated content will no longer be available for download after 7 days.

# Request URL

POST /api/2dvh/v1/material/video/create

# Request Headers

Content-Type: application/json

# Request Parameters

Field Type Required Description
param String True Correct param information must be passed in to create a video synthesis task, including various video synthesis parameters (this parameter is a JSON-escaped string). Please refer to the parameter descriptions and JSON example (opens new window), example effect (opens new window).
videoName String True Video name
thumbnailUrl String False Thumbnail URL

# Request Example

{
  "videoName": "xxx",

  "param": "{\"version\":\"0.0.4\",\"resolution\":[1080,1920],\"bit_rate\":16,\"frame_rate\":25,\"watermark\":{\"show\":true,\"content\":\"示例视频\"},\"digital_role\":{\"id\":3964,\"face_feature_id\":\"0401_chenying_s1\",\"name\":\"0401_chenying_s1\",\"url\":\"https://dwg-aigc-paas.oss-cn-hangzhou.aliyuncs.com/materials/77/0401_chenying_s1_20230427133135306.zip\",\"position\":{\"x\":0,\"y\":0},\"scale\":1.0},\"tts_config\":{\"id\":\"nina\",\"name\":\"Nina\",\"vendor_id\":3,\"language\":\"zh-CN\",\"pitch_offset\":0.0,\"speed_ratio\":1,\"volume\":100},\"tts_query\":{\"content\":\"丝绸之路是一条连接东西方的古老商路，在这条路上，东西方通过贸易和文化交流，促进了不同文明的不断融合。 历史上张骞出使西域，开启了最早的丝绸之路，从此丝绸之路上的商人一次次穿越沙漠和山脉进行通商往来。 中国的丝绸、瓷器、茶叶，以及印度的佛教、希腊的哲学等都在这条路上得到充分地传承和发展。\",\"ssml\":false},\"backgrounds\":[{\"type\":0,\"name\":\"背景\",\"url\":\"http://dwg-aigc-paas.oss-cn-hangzhou.aliyuncs.com/test/background.png\",\"rect\":[0,0,1080,1920],\"cycle\":false,\"start\":0,\"duration\":-1}],\"foregrounds\":[{\"type\":0,\"name\":\"前景\",\"url\":\"http://dwg-aigc-paas.oss-cn-hangzhou.aliyuncs.com/test/frontgroud.png\",\"rect\":[0,1359,1092,561],\"cycle\":false,\"start\":0,\"duration\":-1}],\"foreground-texts\":[{\"text\":\"丝绸之路介绍\",\"font_size\":20,\"font_family\":\"Noto Sans S Chinese Black\",\"position\":{\"x\":100,\"y\":200},\"rgba\":[100,200,100,100]}]}"

}

# Response Elements

Field Type Required Description
code Integer True 0 - Success, Other - Error
message String True Error details
data Integer False Task ID

# Response Example

{

    "code": 0,

    "message": "success",

    "data": 1

}
# JSON Parameter Description
Name Type Example Required Description
version String "0.0.17" Yes Latest version number of the video synthesis JSON configuration file
video_format String "mp4" No Video output format. Values: MP4, WEBM, MOV. Defaults to MP4 if not specified. WEBM and MOV formats support alpha (transparency) channel.
resolution Int Array [1080,1920] Yes Video resolution. Recommended options: [480,854], [720,1280], [1080,1920] (portrait formats). Avatar model resolution is 2K (1080×1920) and 4K (2160×3840). Different resolutions require adjusting the digital human avatar scale for optimal results. For example, with [1080,1920] resolution, the 4K avatar scale parameter should be set to approximately 0.5
bit_rate Float 8 No Video bitrate (Mbps), maximum 16, minimum 1
frame_rate Integer 25 Yes Video frame rate. Currently only supports 25fps
watermark Object No Video watermark
 show Boolean True Yes Whether to display video watermark
 content String "Test" Yes Video watermark content. If enabled but content is not provided, it will be auto-filled.
invisible-watermark Object No Hidden video watermark, supports MP4 only
 show Boolean True Yes Whether to enable hidden video watermark.
 content String "1234567890123456 " No Hidden watermark text. Cannot use Chinese! English + numbers only, 16 characters total. If fewer than 16 characters, trailing zeros are auto-appended; if more than 16, only the first 16 are used.
digital_role Object As below
 id Integer 1 No Digital human ID
 face_feature_id String "1" Yes Digital human face feature ID
 name String "Xiao Li" No Digital human name
 url String "https://xxx/role.zip" Yes Digital human avatar zip package. Required for video synthesis. In live streaming scenarios, this field is not needed; use fileId instead
 fileId String "12345" No ID after preheated material upload. Required for live streaming scenarios
 position Object As below Yes Starting pixel position of the digital human avatar image, with the top-left corner of the 1080×1920 resolution canvas as the origin; right is the x-direction, down is the y-direction
  x Integer 0 Yes X-axis coordinate value
  y Integer 0 Yes Y-axis coordinate value
 scale Float 1.0 Yes Digital human avatar scale ratio
 rotation Float 0.0 Yes Rotation angle, range [0.0, 360.0]. The opposite direction of the canvas Y-axis is 0 degrees; the clockwise angle is the rotation angle. The image center point is used as the anchor point during rotation
 volume Integer 0 No Digital human broadcast volume, range 0–100. Note: Minimum version required: 0.0.13.
 z_position Integer 0 Yes Layer order. Each z_position must be unique; higher numbers display in front. Note: Minimum version required: 0.0.6 (required field).
 start_frame_index Integer 0 No Synthesis video start frame, range [1, N]. Returns error if out of range. Note: Minimum version required: 0.0.14. Not recommended for premium digital humans.
tts_config Object As below Yes TTS configuration. Either tts_query or audios must exist; when both exist, tts_query takes priority
 qid String 8wfZav:AEA_Z10Mqp9GCwDGMrz8xIzi3VScxNzUtLCh No Filling this field overrides the voiceid, language, and vendor_id fields.
 id String "zh-CN-XiaoxuanNeural" Yes Speaker ID, same as voiceID
 name String "Xiaoxuan" Yes Speaker name
 vendor_id Integer 4 Yes Vendor ID. Must match the TTS voice model information in use. Do not fill arbitrarily. Not required when using qid.
 language String "zh-CN" Yes Language code
 pitch_offset Float 0.0 Yes Pitch. Higher values are sharper, lower values are deeper. Range [-60, 60]
 speed_ratio Float 1 Yes Speech rate. Higher values mean slower speech. Range [0.5, 2]
 volume Integer 100 Yes Volume. Higher values mean louder. Range [1, 400]
tts_query Object As below No TTS speech synthesis. Either tts_query or audios must exist; when both exist, tts_query takes priority
 content String "Dear audience and friends, hello! It is a great honor to gather with you at this wonderful moment. Welcome to today's program." Yes Text content for speech synthesis. Must be at least 10 characters. All language speakers can synthesize English queries; all language speakers can synthesize queries in their own language; Cantonese, Shanghainese, and other Chinese dialect speakers can synthesize Chinese queries
 use_action Boolean false false Whether TTS text supports action editing.
Action definition in TTS text: To insert an action, insert {action index:action_number} at the corresponding position in the text. E.g., {action index:0}. There is a space between "action" and "index". Action numbers can be obtained from the digital human's result JSON. If the user's TTS itself needs to output {action}, use ^{action} for escaping, which will not be extracted as an action
 ssml Boolean false No Whether to use SSML. When enabled, query can use USSML. USSML is recommended
audios Object Array As below No Audio driving. Either tts_query or audios must exist; when both exist, tts_query takes priority
 url Object {"url":"https://xxx/audio.mp3"} Yes Array. Supports multiple MP3 format driving audio files
subtitle Object As below No Subtitles
 url String "https://xxx/subtitle.srt" Yes Subtitle file list. Version 0.0.13 and earlier only parse this field.
 urls String Array ["https://xxx/subtitle.srt","https://xxx/subtitle.srt"] No Version 0.0.14 and later prioritize parsing this field. If this field does not exist, the url field is parsed.
Special note: If version ≥ 0.0.14 and audios contains multiple audio files, the url field is still parsed, showing only one subtitle. This is expected behavior.
 scale Float 1.0 Yes Text scale ratio, range 0~+∞, default is 1. Original reference size is font_size.
 position Object As below No Subtitle starting position, with the top-left corner of the 1080×1920 resolution canvas as the origin; right is x-direction, down is y-direction. Default position is at the bottom of the video with center alignment. Note: Minimum version required: 0.0.13.
  x Integer 0 No X-axis coordinate value
  y Integer 0 No Y-axis coordinate value
 rgba Int Array [100,100,100,100] Yes Subtitle color in RGBA format, range 0–255. [Alpha channel not currently supported]
 font_size Integer 20 Yes Subtitle font size setting
 font_family String "Noto Sans S Chinese Black" Yes Font name. See the JSON supported font list for available fonts
 stroke_width Float 2 No Stroke width, range 0~+∞, default is 0. Note: Minimum version required: 0.0.10.
 stroke_rgba Int Array [100,100,100,100] No Subtitle stroke color in RGBA format, range 0–255. [Alpha channel not currently supported]. Note: Minimum version required: 0.0.10.
 background_rgba Int Array [100,100,100,100] Yes Subtitle background (font background color), range 0–255. Alpha channel value of 0 means fully transparent. Note: Minimum version required: 0.0.10.
 opacity Float 0.5 No Subtitle layer opacity, range 0–1. 0 means fully transparent, 1 means opaque. Note: Minimum version required: 0.0.10.
 subtitle_max_len Integer 10 No Maximum subtitle segment length. Default is 0 (no limit). If max segment length is not set, subtitle occupies max 80% of canvas width; overflow auto-wraps. Note: Minimum version required: 0.0.10.
 subtitle_cut_by_punc Boolean True No Whether to split by punctuation. Note: Minimum version required: 0.0.10.
 rotation Float 0.0 Yes Rotation angle, range [0.0, 360.0]. The opposite direction of the canvas Y-axis is 0 degrees; clockwise angle is the rotation angle. Image center point is the anchor. Note: Minimum version required: 0.0.14.
 auto_font_size Boolean True No Default is True. Subtitle calculates final display font size based on formula; display differs from foreground text/title at the same font_size setting. False: Subtitle uses the same font size rules as foreground text/title.
 sub_to_canvas_width_ratio Float 1.0 No Default is 1.0. Ratio of subtitle width to canvas width, range (0, 2]. Values ≤0 or >2 are reset to 1.0. Line breaks if single line cannot fit.
backgrounds Object Array As below No Backgrounds
 type Integer 0 Yes 0: Image (jpg, png); 1: Video (mp4, frame rate ≥25, no resolution requirements). Different resolution videos are processed by fitting the short edge and scaling proportionally
 name String "Background" Yes Background name
 url String "https://xxx/bg.png" Yes Background file URL. If no background image or video is set, WebM format shows black background; MP4 format shows gray default frame background. In live streaming, this field is empty; use fileId
 fileId String "12345" No ID after preheated material upload. Required for live streaming scenarios
 rect Int Array [0,0,1080,1920] Yes [Not currently supported] Background starting position and size, based on 1080×1920 resolution canvas. Currently does not support customization; defaults to fitting short edge with proportional scaling
 cycle Boolean false Yes For videos only. false: Single play, true: Loop play
 start Integer 0 Yes Background start time in ms
 duration Integer -1 Yes Background duration in ms. -1 is default, meaning it persists throughout the video
 play_offset Integer 1 No Effective in live streaming. For videos only. The playback start time of the background video itself, in ms
 volume Integer 0 No Background video volume. Higher values mean louder. Range [0, 100], standard volume. Note: Minimum version required: 0.0.13.
background-musics Object Array As below No Background music
 url String "https://xxx/bgm.mp3" Yes Background music URL
 volume Integer 100 Yes Volume. Higher values mean louder. Range [0, 100], standard volume 100
 duration Integer -1 No Duration in ms. -1 is default, meaning it persists throughout the video. Stops when duration is reached regardless of loop setting
 start Integer 0 No Start time in ms. 0 is default, meaning playback starts from the 0th millisecond of the video
 cycle Boolean True No false: Single play, true: Loop play
foregrounds Object Array As below No
 type Integer 0 Yes 0: Image (jpg, png); 1: Video (mp4)
 name String "Foreground" Yes
 url String "https://xxx/fg.png" Yes Foreground file URL. Images support png or jpg; videos support mp4. In live streaming, this field is empty; use fileId
 fileId String "12345" No ID after preheated material upload. Required for live streaming scenarios
 rect Int Array [0,0,1080,1920] Yes Starting position and size, based on 1080×1920 resolution canvas
 rotation Float 0.0 Yes Rotation angle, range [0.0, 360.0]. The opposite direction of the canvas Y-axis is 0 degrees; clockwise angle is the rotation angle. Image center point is the anchor
 cycle Boolean False No For videos only. false: Single play, true: Loop play. After single play completes, if the specified duration has not been reached, the foreground video stays on the last frame
 z_position Integer 2 Yes Layer order. Each z_position must be unique; higher numbers display in front. Note: Minimum version required: 0.0.6 (required field).
 start Integer 0 Yes Foreground start time in ms
 play_offset Integer 1 No Effective in live streaming. For videos only. The playback start time of the background video itself, in ms
 duration Integer -1 Yes Foreground duration in ms. -1 is default, meaning it persists throughout the video
 volume Integer 0 No Foreground video volume. Higher values mean louder. Range [0, 100], standard volume. Note: Minimum version required: 0.0.13.
foreground-texts Object Array As below No Foreground text
 text String "Foreground text" Yes Foreground text content
 scale Float 1.0 Yes Text scale ratio, range 0~+∞, default is 1. Original reference size is font_size.
 duration Integer -1 No Duration in ms. -1 is default, meaning it persists throughout the video. Stops when duration is reached regardless of loop setting
 start Integer 0 No Start time in ms. 0 is default, meaning foreground text appears from the 0th millisecond
 position Object As below Yes Foreground text starting position, with the top-left corner of the 1080×1920 resolution canvas as the origin; right is x-direction, down is y-direction
  x Integer 0 Yes X-axis coordinate value
  y Integer 0 Yes Y-axis coordinate value
 rgba Int Array [100,100,100,100] Yes Foreground text color in RGBA format, range 0–255. [Alpha channel not currently supported]
 font_size Integer 20 Yes Foreground text font size setting
 font_family String "Noto Sans S Chinese Black" Yes Font name. See the JSON supported font list for available fonts
 stroke_width Float 2 No Stroke width, range 0~+∞, default is 0
 stroke_rgba Int Array [100,100,100,100] No Foreground text stroke color in RGBA format, range 0–255. [Alpha channel not currently supported]
 background_rgba Int Array [100,100,100,100] Yes Foreground text background (font background color), range 0–255. Alpha channel value of 0 means fully transparent. Note: Minimum version required: 0.0.10.
 opacity Float 0.5 No Foreground text layer opacity, range 0–1. 0 means fully transparent, 1 means opaque. Note: Minimum version required: 0.0.10.
 z_position Integer 2 Yes Layer order. Each z_position must be unique; higher numbers display in front. Note: Minimum version required: 0.0.8 (required field).
 rotation Float 0.0 Yes Rotation angle, range [0.0, 360.0]. The opposite direction of the canvas Y-axis is 0 degrees; clockwise angle is the rotation angle. Image center point is the anchor. Note: Minimum version required: 0.0.14.
title Object Array As below No Title text. Its layer is above the digital human, background, and foreground text. Note: Minimum version required: 0.0.10.
 text String "Title text" Yes Title text content
 scale Float 1.0 Yes Text scale ratio, range 0~+∞, default is 1. Original reference size is font_size.
 position Object As below Yes Title text starting position, with the top-left corner of the 1080×1920 resolution canvas as the origin; right is x-direction, down is y-direction
  x Integer 0 Yes X-axis coordinate value
  y Integer 0 Yes Y-axis coordinate value
 rgba Int Array [100,100,100,100] Yes Title text color in RGBA format, range 0–255. [Alpha channel not currently supported]
 font_size Integer 20 Yes Title text font size setting. Unit: px.
 font_family String "Noto Sans S Chinese Black" Yes Font name. See the JSON supported font list for available fonts
 stroke_rgba Int Array [100,100,100,100] No Title text stroke color in RGBA format, range 0–255. [Alpha channel not currently supported]
 stroke_width Float 2 Yes Stroke width, range 0~+∞, default is 0
 background_rgba Int Array [100,100,100,100] Yes Title text background (font background color), range 0–255. Alpha channel value of 0 means fully transparent. [Alpha channel not currently supported]
 opacity Float 0.5 No Title text layer opacity, range 0–1. 0 means fully transparent, 1 means opaque
 rotation Float 0.0 Yes Rotation angle, range [0.0, 360.0]. The opposite direction of the canvas Y-axis is 0 degrees; clockwise angle is the rotation angle. Image center point is the anchor. Note: Minimum version required: 0.0.14.
effects Object As below No
 version String "1.0" Yes Effects engine version
 beautify Object As below No Beauty effects
  whitenStrength Float 0.3 No [0,1.0] Whitening. Default 0.30. 0.0 means no whitening
  whiten_mode Integer 0 No Whitening mode: 0 (pinkish white), 1 (natural white), 2 (natural white on skin areas only)
  reddenStrength Float 0.36 No [0,1.0] Ruddiness. Default 0.36. 0.0 means no ruddiness
  smoothStrength Float 0.74 No [0,1.0] Skin smoothing. Default 0.74. 0.0 means no smoothing
  smooth_mode Integer 0 No Smoothing mode: 0 (face area smoothing), 1 (full image smoothing), 2 (face area fine smoothing)
  shrinkRatio Float 0.11 No [0,1.0] Face slimming. Default 0.11. 0.0 means no face slimming
  enlargeRatio Float 0.13 No [0,1.0] Eye enlargement. Default 0.13. 0.0 means no eye enlargement
  smallRatio Float 0.10 No [0,1.0] Small face. Default 0.10. 0.0 means no small face effect
  narrowFace Float 0.0 No [0,1.0] Narrow face. Default 0.0. 0.0 means no narrow face
  roundEyesRatio Float 0.0 No [0,1.0] Round eyes. Default 0.0. 0.0 means no round eyes
  thinFaceShapeRatio Float 0.0 No [0,1.0] Thin face shape. Default 0.0. 0.0 means no thin face shape
  chinLength Float 0.0 No [-1, 1] Chin length. Default 0.0. [-1, 0] for shorter chin, [0, 1] for longer chin
  hairlineHeightRatio Float 0.0 No [-1, 1] Hairline. Default 0.0. [-1, 0] for lower hairline, [0, 1] for higher hairline
  appleMusle Float 0.0 No [0, 1.0] Apple muscle. Default 0.0. 0.0 means no apple muscle
  narrowNoseRatio Float 0.0 No [0, 1.0] Nose slimming/nostril slimming. Default 0.0. 0.0 means no nose slimming
  noseLengthRatio Float 0.0 No [-1, 1] Nose length. Default 0.0. [-1, 0] for shorter nose, [0, 1] for longer nose
  profileRhinoplasty Float 0.0 No [0, 1.0] Side-face nose bridge. Default 0.0. 0.0 means no side-face nose bridge effect
  mouthSize Float 0.0 No [-1, 1] Mouth size. Default 0.0. [-1, 0] to enlarge mouth, [0, 1] to shrink mouth
  philtrumLengthRatio Float 0.0 No [-1, 1] Philtrum length. Default 0.0. [-1, 0] for longer philtrum, [0, 1] for shorter philtrum
  eyeDistanceRatio Float 0.0 No [-1, 1] Eye distance. Default 0.0. [-1, 0] to decrease eye distance, [0, 1] to increase eye distance
  eyeAngleRatio Float 0.0 No [-1, 1] Eye angle. Default 0.0. [-1, 0] for left eye counter-clockwise rotation, [0, 1] for left eye clockwise rotation; right eye mirrors left eye
  openCanthus Float 0.0 No [0, 1.0] Open canthus. Default 0.0. 0.0 means no open canthus
  shrinkJawbone Float 0.0 No [0, 1.0] Jawbone slimming ratio. Default 0.0. 0.0 means no jawbone slimming
  shrinkRoundFace Float 0.0 No [0, 1.0] Round face slimming. Default 0.0. 0.0 means no slimming
  shrinkLongFace Float 0.0 No [0, 1.0] Long face slimming. Default 0.0. 0.0 means no slimming
  shrinkGoddessFace Float 0.0 No [0, 1.0] Goddess face slimming. Default 0.0. 0.0 means no slimming
  shrinkNaturalFace Float 0.0 No [0, 1.0] Natural face slimming. Default 0.0. 0.0 means no slimming
  shrinkWholeHead Float 0.0 No [0, 1.0] Overall head shrinking. Default 0.0. 0.0 means no head shrinking
  contrastStrength Float 0.05 No [0,1.0] Contrast. Default 0.05. 0.0 means no contrast processing
  saturationStrength Float 0.1 No [0,1.0] Saturation. Default 0.10. 0.0 means no saturation processing
  sharpen Float 0.0 No [0, 1.0] Sharpening. Default 0.0. 0.0 means no sharpening
  clear Float 0.0 No [0, 1.0] Clarity strength. Default 0.0. 0.0 means no clarity
  bokehStrength Float 0.0 No [0, 1.0] Background blur strength. Default 0.0. 0.0 means no background blur
  eyeHeight Float 0.0 No [-1, 1] Eye position ratio. Default 0.0. [-1, 0] moves eyes down, [0, 1] moves eyes up
  mouthCorner Float 0.0 No [0, 1.0] Mouth corner lift ratio. Default 0.0. 0.0 means no mouth corner adjustment
  hairline Float 0.0 No [-1, 1] New hairline height ratio. Default 0.0. [-1, 0] for lower hairline, [0, 1] for higher hairline
 packages Object Array As below No Makeup parameters
  url String "https://xxx/res.zip" Yes Makeup resource URL. Please contact customer service for makeup resource packages
  strength Float 0.3 Yes Makeup intensity
 filter Object As below No Filter parameters
  onlyFigure Boolean false Yes Whether the filter effect only applies to the digital human. true: Filter only on digital human; false: Global filter
  url String "https://xxx/res.zip" Yes Filter resource URL. Please contact customer service for filter resource packages
  strength Float 0.3 Yes Filter intensity

The remaining sections (font list, JSON examples, batch create task, image digital human section) follow the same pattern as the original document with all Chinese text translated. Due to the extreme length, the JSON examples and code blocks are preserved as-is since they contain primarily code/URLs.

The above covers all video synthesis capabilities provided by the platform.

Last Updated: 4/10/2026, 3:13:22 PM

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