Spellsplice logo SpellsplicE

Spellsplice — Magic: The Gathering Video Overlay Editor

Every spell.
On record.

Spellsplice is a unofficial open-source Magic: The Gathering tool that lets you build a synchronized timeline of in-game events — life changes, draws, reveals — and overlay them on your match footage.

Editor is under construction
Support me on Ko-fi Star on GitHub
Spellsplice editor showing a Magic: The Gathering match with card overlays, player state boxes, and a synchronized event timeline
Why use it

Built for creators

Synchronized Timeline

Mark life totals, draws, and events directly on the video with precision.

Footage Overlay

Superimpose match information onto your video for visual storytelling.

Open Source

Unofficial fan content. Free and open source for the community.

Features

Everything you need to document a match

Synchronized timeline showing in-game events
Timeline Events

Mark every moment as it happens

Scrub through your footage and drop markers at the exact frame where each event occurs — life changes, draws, reveals, stack interactions. Card names autocomplete as you type.

  • Events stay in sync when you re-edit
  • Card name autocomplete
  • Undo, scrub, and re-mark freely
Game overlay showing player states on match footage
Game Overlay

Your match, fully visible

Life totals, hand size, and card art render directly on top of your footage. Both players tracked simultaneously, with card art sourced automatically.

  • Both players tracked simultaneously
  • Card art sourced automatically
  • Windowed events for reveals and displays
Decklist import interface
Decklist Import

Paste your list, annotate faster

Import decklists from MTGO export format. Cards in the list surface first in autocomplete and are pre-cached — so you spend less time searching and more time annotating.

  • MTGO export format supported
  • Maindeck and sideboard parsed separately
  • Deck cards prioritized in autocomplete
In-browser video export dialog
Video Export

Export straight from the browser

No software to install. The overlay is composited onto your footage entirely in-browser using WebCodecs and WebGL — then saved directly to your machine.

  • No installs, no uploads
  • H.264/MP4 or VP9/WebM output
  • 30 or 60 fps, 1920×1080