API for compost
Video Compositing via 'FFmpeg'

Global functions
.assemble_track Man page Source code
.audio_concat_filter Man page Source code
.audio_envelope Source code
.broadcast_audio_filter Man page Source code
.build_zoom_expr Man page Source code
.caption_file Man page Source code
.clip_urls Man page Source code
.ease_expr Man page Source code
.framing_vf Man page Source code
.generate_zoom_pattern Man page Source code
.is_absolute_path Man page Source code
.is_caption_track Man page Source code
.is_image Man page Source code
.kenburns_filter Man page Source code
.layout_filter Man page Source code
.layout_slots Man page Source code
.lerp_expr Man page Source code
.motion_from_effects Man page Source code
.motion_num Man page Source code
.motion_xy Man page Source code
.parse_rms Man page Source code
.parse_timestamp Man page Source code
.pip_filter Man page Source code
.prerender_sources Man page Source code
.probe_field Man page Source code
.probe_format_field Man page Source code
.resolve_media Man page Source code
.rms_filter Man page Source code
.run_ffmpeg Man page Source code
.run_ffprobe Man page Source code
.sample_corner_color Man page Source code
.slot_chain Man page Source code
.still_size Man page Source code
.subtitles_filter Man page Source code
.timeline_framing Man page Source code
.timeline_layout Man page Source code
.track_role Man page Source code
.video_fps Source code
.video_frame_count Source code
.video_sequence Man page Source code
align_audio Man page Source code
align_overlaps Man page Source code
audio_concat Man page Source code
audio_convert Man page Source code
broadcast_audio Man page Source code
chromakey Man page Source code
colorkey Man page Source code
compose_layout Man page Source code
concat Man page Source code
crossfade_concat Man page Source code
frame_export Man page Source code
frames_clip Man page Source code
hstack Man page Source code
normalize_audio Man page Source code
overlay Man page Source code
pad Man page Source code
pip Man page Source code
probe Man page Source code
render_timeline Man page Source code
rms_curve Man page Source code
still_clip Man page Source code
subclip Man page Source code
vstack Man page Source code
zoom Man page Source code
compost documentation built on Aug. 4, 2026, 5:11 p.m.