asset_... ID. In the example below, MiniMax H3
calls that field first_frame.
video.url when the run completes.
A still from Generate an image already has an
asset_id on that run’s outputs. Pass it straight into the next run
instead of downloading the file.
Models constrain which inputs combine. On MiniMax H3, last_frame
requires first_frame, and sending it alone returns
error.code: "run.input_role_dependency". Neither frame combines with
reference, reference_video, or audio, and sending them together
returns error.code: "run.input_role_conflict".
Many models expose animation as a separate operation, video.animate,
which takes the still on image and requires operation. Check the
catalog entry for the model you call.
