1 · SOURCE
DRAG & DROP VIDEO
or tap to browse (.mp4 / .webm / .mov)
2 · CLIP
defaults to the full video, every time you load one — type a shorter number if you only want part of it. no artificial cap: it can run all the way to the clip's real length.
baked into the exported file — the player times playback to match whatever you pick, up to 120fps. Kobo's browser is slow, so above ~10fps things may lag — high frame rates are mainly useful for exporting to play elsewhere.
3 · RENDER MODE
auto-built from every printable keyboard character Kobo's font is guaranteed to have (letters, digits, punctuation) — sorted dark to light by actually measuring how much ink each glyph draws, so there's no artificial limit on how many shades you get. Edit it by hand any time, or rebuild it below.
when on, each character keeps the ramp's shading for its shape but is painted with that cell's real sampled colour instead of plain black/white — needs a colour screen (not e-ink). Off = plain black-on-white/white-on-black text, safest for Kobo.
controls how the exported player draws the glyphs — higher settings add a hairline stroke to each character so it reads as solid black instead of e-ink's grey anti-aliasing.
"HTML/CSS blocks" draws every cell as an actual coloured <div> on the page instead of an emoji square or a canvas image — this is the option to use if your emoji square glyph shows as a box-with-question-mark on Kobo. It works everywhere a browser can render CSS background colours, no special font needed.
How this actually works: rather than drawing an emoji per cell (Kobo's browser often has no emoji font, and redrawing thousands of coloured glyphs every frame is what causes e-ink flash), each cell's real sampled colour is captured and rendered either as a scaled-up bitmap image or as real HTML/CSS coloured boxes — so you still get solid, real, per-pixel colour blocks, just rendered a way that stays crisp and fast on Kobo's hardware.
4 · PREVIEW & EXPORT
Recommended for Kobo: export the standalone file below. It has everything baked in, so opening it just plays — no second file, no picker, no network access needed (Kobo's browser blocks that for local files anyway).
preview will render here