clipform_render_composition

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Render a specialised video composition to MP4 or PNG - custom animated visuals that clipform_generate_video can't provide, such as geography animations or designed motion graphics. Available composition names and their required input props schemas come from clipform_list_compositions. For narrated Ken Burns slideshows from images, use clipform_generate_video instead. Output formats: mp4 (H.264, best for social media) or png (single frame). Returns a public URL when complete. For multi-render builds (e.g. one clip per quiz question), pass everything in ONE call via items (max 10): all renders fire in parallel and you get one job ID each - then collect the URLs in a single clipform_check_render call with job_ids. Single render: pass compositionId/inputProps at the top level (wait: true blocks and returns the URL; wait: false returns a job ID). Choosing a render tool: for a recognisable form/quiz beat (guess-the-city, this-or-that, mystery reveal, multiple choice, photo montage...) reach for a video template first (clipform_list_video_templates + clipform_render_video_template) - it is a one-call recipe. Use clipform_generate_video for a narrated or audio-synced media montage (images/clips timed to a voice track). Use clipform_render_composition only when neither fits and you need a custom layer stack. A render for a form node is not done until it is attached to that node. Pass node_id (and form_id) so the completed render attaches itself automatically - do not poll clipform_check_render to completion or manually chain clipform_upload_media_asset + clipform_attach_node_media; fire the render and move on. In batch mode, set node_id per item (see items) and form_id once at the top level.