Crate kael_media_engines 

Optional media/NLE engines for the Kael native application framework.

This crate is a leaf domain stack: it builds media-application capability (timelines, compositing, audio mixing, export) on top of the general-purpose runtime, and nothing in the core kael crate depends on it. This keeps media-specific engines out of the general framework dependency graph.

Modules

audio_mix

Timeline audio mixdown — the audio counterpart to composite_frame.

automation

Parameter automation curves — keyframed envelopes for animating a clip or track property over time (opacity, volume, pan, effect parameters).

compositor

Timeline-driven compositing against the reference compositor — the preview==export oracle (V1 + V5).

effects

Serializable per-clip effects.

export

Timeline render/export pass — drives composite_frame across a frame range and feeds each composited frame to an ExportSink with its presentation timestamp.

frame_cache

Decoded-frame cache with byte-budget LRU eviction.

generators

Procedural source generators — solid color, linear gradient, checkerboard — usable as timeline clips.

markers

Timeline markers — named cue / chapter / comment points used for navigation and snapping.

media

Media and video workload engine.

playback

Frame-accurate playback clock, seek resolution, and the A/V-sync contract (P0-G).

project

Versioned, relinkable project document model.

scopes

Video scopes — per-channel and luma histograms over a rendered frame.

subtitles

SubRip (.srt) subtitle parsing, querying, and serialization.

timecode

SMPTE non-drop-frame timecode (HH:MM:SS:FF).

transform

Serializable per-clip geometric transform.