Render Coloring Timelapse Videos with Music
The Videos stage renders the finished product: your pages coloring themselves in. Press Run Rest (fills missing videos) or Run All (re-renders everything, with an overwrite confirmation) and watch the grid fill with live progress bars. Rendering is local — GPU-accelerated when available — and costs nothing.
Finished cards autoplay as you scroll. Click one for a full-screen preview with sound; hover for a regenerate button; right-click → Show in Explorer for the files.
The Settings Panel
Section titled “The Settings Panel”The gear button opens the render settings:
| Setting | What it does |
|---|---|
| HW Encoder (read-only) | The hardware video encoder that was auto-detected on your machine. |
| GPU Rendering (default: on) | Renders animation frames on the GPU. Turn off only if you hit driver issues. |
| Custom Resolution (default: off) | Off = videos match your page resolution. On = set your own W × H (snaps to even pixels), with an aspect lock that keeps your project’s ratio, and a Layout choice: Fit (scale to fill, letterbox on mismatch) or Actual (native size, centered). This is how you make 1080×1920 Reels/Shorts formats. |
| Audio Sync (default: off) | The killer option — see below. |
Audio: Videos That Color to the Music
Section titled “Audio: Videos That Color to the Music”Turn on Audio Sync and the pen strokes are driven by the music itself — reveals land on the audio’s onsets, and the track is muxed into the final MP4.
| Setting | What it does |
|---|---|
| Audio Path | A folder of tracks (mp3/wav/flac/ogg/m4a/aac). |
| Mapping | How tracks pair with pages: A↑ alphabetical, Z↓ reverse, or dice — random but deterministic (each page keeps the same track across re-renders). Fewer tracks than pages? They loop around. |
| Per-page override | A music button on each card assigns a specific track to that page (hover it to clear). Overrides beat the mapping rule. |
| Is Loop (default: off) | Tailors the animation to a seamlessly looping track — for posts that replay endlessly. |
Reading the Grid
Section titled “Reading the Grid”- Yellow card, “Missing: …” — that page’s assets aren’t compiled yet; go back to Assets.
- “Failed” with a reason — hover for the full error, click retry.
- Batch timer in the header shows count and elapsed time for the current/last run.