The hierarchical, lossless video and FX editor.

Run mmrecode and the complete editing workspace opens where you already work.

The terminal contains the monitor, timeline, inspector, contextual help, and command prompt. Navigate hierarchical compositions with familiar commands, edit without changing tools, and preview moving video with synchronized audio in the same workspace.

Kitty and Ghostty use the direct Kitty graphics path. MMRecode also selects Sixel or iTerm2 images when available, and falls back to a portable 24-bit Unicode renderer in other true-color terminals.

The editor is one application built on a reusable media foundation.

Applications can use the codec, container, playback, editing, rendering, and MMFX crates independently. Shared packet, frame, stream, exact-time, and dependency interfaces keep those parts composable without tying them to one frontend or platform.

MMRecode plans an export from the actual dependency structure of the codec instead of treating every edit as a full transcode.

Unchanged media

Original encoded packets are copied and retimed.

Exact cut boundaries

Only codec dependencies damaged by the cut are regenerated.

Titles and effects

Only the affected frame range is decoded, rendered, and encoded.

The render plan remains visible and explainable: copied, bridge-encoded, and fully rendered ranges are deliberate decisions, not hidden export behavior.

The composition is a hierarchy of media and placement links, not one permanently expanded stack of tracks.

A clip may contain a title, a mask, an effect, or another complete composition. Entering Film > Clip0 > Title changes the visible timeline to that object’s local time. The media remains reusable, while each placement keeps its own timing and overrides.

Commands such as pwd, ls, and cdexpose this structure directly. Saved edits are typed operations, so they can be replayed, tested, diffed, or produced by another frontend without translating through shell strings.

MMFX is the scene, typography, layout, animation, transition, and visual-effect system built into MMRecode.

A strict CSS-shaped scene language describes text, shapes, groups, media, and layout. It compiles to typed scene data before rendering; unknown properties are errors, time is exact, fonts are explicit resources, and the CPU reference renderer defines compositing behavior independently of a browser or GPU API.