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get_social_media_placement — Look up one social media placement by id and return its frame size, aspect ratio, first-party safe-area insets in px, usable box, and the of

list_social_media_placements — List every supported social media placement (or one platform's) with frame size, aspect ratio, safe-area insets in px, usable box and first-

check_safe_area — Check whether a rectangle (a caption, logo or button, in px on the placement's own frame, origin top-left) stays inside the placement's safe

calculate_aspect_ratio — Reduce any pixel size to its simplest aspect ratio (1920x1080 is 16:9) and the nearest even size an H.264 encoder accepts, and, given a targ

estimate_video_bitrate — Video size and bitrate arithmetic for a clip of durationSec. Pass videoKbps to get the encoded file size (MB, GB, MiB, GiB); pass targetCapM

convert_subtitles — Convert subtitle text between SubRip (srt) and WebVTT (vtt), optionally shifting every cue by shiftMs, and return the converted text with th

estimate_tempo — Tempo arithmetic for editing to music: pass tap timestamps (ms) to estimate BPM with a stability and confidence rating, or pass a known bpm.