3.0 Omni Video Generation

Information for each shot, such as prompt, duration, etc. ● Define the shot sequence number and corresponding prompt and duration through the index, prompt, and duration parameters, where: ○ A maximum of 6 shots and a minimum of 1 shot are supported. ○ The maximum length of the content related to each shot does not exceed 512. ○ The duration of each shot must not be greater than the total duration of the current task and not less than 1. ○ The sum of the durations of all shots must equal the total duration of the current task. ● Carried in key:value format as follows: "multi_prompt": [ { "index":int, "prompt": "string", "duration": "5" }, { "index":int, "prompt": "string", "duration": "5" } ] ● This parameter must not be empty when the mult_shot parameter is true and the shot_type parameter is customize.

Reference Image List ● Includes reference images for subjects, scenes, styles, etc., which can also be used as the first or last frame to generate videos; when used as the first or last frame to generate videos: ○ Use the type parameter to define whether the image is the first or last frame: first_frame for the first frame, end_frame for the last frame ○ Currently, using only the last frame is not supported, meaning a first frame image is required if a last frame image is provided ○ When generating videos from the first frame or both first and last frames, video editing features cannot be used ● Carried in key:value format, as follows: "image_list":[ { "image_url":"image_url", "type":"first_frame" }, { "image_url":"image_url", "type":"end_frame" }] ● Supports passing Base64-encoded images or image URLs (ensure accessibility) ● Supported image formats include .jpg / .jpeg / .png ● Image file size must not exceed 10MB, image width and height must be no less than 300px, and the aspect ratio must be between 1:2.5 and 2.5:1 ● When a reference video is present, the number of reference images must not exceed 4; when no reference video is present, the number of reference images must not exceed 7 ● When using the O1 model, setting the first and last frames is not supported if the array contains more than 2 images ● The image_url parameter value must not be empty

Reference Element List ● Configured based on the IDs of elements in the element library, using key:value format as follows: "element_list":[ { "element_id":long }, { "element_id":long }] ● The number of reference elements is related to the presence of reference videos and the number of reference images, specifically: ○ When generating a video from the first frame or from the first and last frames, a maximum of 3 elements are supported; ○ When a reference video is provided, the sum of reference images and reference elements must not exceed 4, and video character elements are not supported; ○ When no reference video is provided, the sum of reference images and reference elements must not exceed 7; ● Elements are divided into video-customized elements (abbreviated as video character elements) and image-customized elements (abbreviated as multi-image elements), which have different application scopes; please note the distinction ● Different model versions and video modes have different support scopes; please refer to the capability map in the current document for details.

Reference video, obtained via URL ● Can be used as a feature reference video or a video to be edited, defaulting to the video to be edited; the original audio of the video can be optionally retained ○ Use the refer_type parameter to distinguish the reference video type: feature for feature reference video, base for video to be edited ○ When the reference video is the video to be edited, the first and last frames of the video cannot be defined ○ Use the keep_original_sound parameter to choose whether to retain the original audio of the video, yes to retain, no to not retain; this parameter currently also applies to feature reference videos (feature) ● When a reference video is provided, the sound parameter value can only be off ● Carried in key:value format, as follows: "video_list":[ { "video_url":"video_url", "refer_type":"base", "keep_original_sound":"yes" }] ● Only MP4/MOV video formats are supported ● The video duration must be no less than 3 seconds, and the upper limit depends on the model version, see the capability map for details ● The video width and height dimensions must be between 720px (inclusive) and 2160px (inclusive) ● The video frame rate is based on 24fps to 60fps, and the generated video will be output at 24fps ● A maximum of 1 video can be uploaded, and the video size must not exceed 200MB ● The video_url parameter value must not be empty ● Different model versions and video modes have different support ranges, see the capability map in the current document for details

Whether to simultaneously generate results with watermarks ● Defined via the enabled parameter, the specific array format is as follows: "watermark_info": { "enabled": boolean // true to generate, false not to generate} ● Custom watermarks are not currently supported