How should I choose between V2.1 Master and V2 Master?
V2.1 Master is better suited as a candidate for image quality and consistency. It is recommended to compare the actual results of both using the same prompt or first frame, rather than judging only by the version name. Both are used here for 5- or 10-second clips, which does not imply additional control capabilities.
Can image-to-video specify both a first frame and a last frame?
This model uses first-frame image-to-video: submit start_image_url and describe subsequent actions with a prompt; end_image_url last-frame constraints are not supported. If you must specify the ending image, choose a model that supports first and last frames, such as V2.5 Turbo pro, and prepare materials according to the corresponding creation workflow.
What is the difference between regular video and talking photos?
Regular video generates dynamic visuals from text or a first-frame image; this model does not natively generate synchronized audio. Talking photos, on the other hand, require a photo and existing audio, generating a spoken video through animation and lip synchronization; the audio is input material, not a voice automatically created by the model.
How do I submit a video task for this model?
Call POST /kling/videos, explicitly set model to kling-v2-1-master, choose text2video or image2video, and submit a prompt with a duration of 5 or 10 seconds. Image-to-video also requires a first-frame image link; after completion, retrieve the generated video through video_url.
How can I track generation results for batch production?
You can set async=true, save the returned task_id first, then query task progress; you can also configure callback_url to receive completion notifications. After obtaining results, associate video links and statuses by task ID. Talking photos can likewise use an asynchronous approach and return the final video and intermediate animation links.