How do I install the Gm Reel Motion skill?

Run npx skillmds@latest add crafty-arl/gm-reel-motion in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Gm Reel Motion safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Gm Reel Motion?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Gm Reel Motion free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Gm Reel Motion?

crafty-arl (@crafty-arl) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Gm Reel Motion by crafty-arl — Agent Skill

Name: Gm Reel Motion
Rating: 4.666666666666667 (3 reviews)
Author: crafty-arl

File contents

GM! Carl reel motion standard

Locked 2026-09-12. Every reel from here uses this. Source: reel-captions.html (the TIMING + EASE block is the single source of truth), worked example in reel-count/.

The rules

Element	Motion	Timing
Big number	counts up 0 → value, easeOutExpo	starts 0.06s, runs 0.92s
Big number	scale 0.88 → 1.0, easeOutBack (slight overshoot) + fade	0.00s, 0.38s
Gold rule	wipes out from centre, 0 → 220px, easeOutCubic	0.30s, 0.45s
Supporting line	fade + rise 26px, easeOutCubic	0.52s, 0.40s
Body lines	fade + rise 30px, staggered 0.09s per line	0.00s, 0.46s each
Source credit	fade in last, always	0.70s, 0.40s

Why count-up and not a cut. The whole campaign is called a count. A number that rolls up reads as data being gathered; a number that cuts in reads as a claim. It also buys ~1s of attention on a stat that would otherwise be read and dismissed.

Never animate the source credit's text, only its opacity. A moving citation looks like decoration; a still one looks like evidence.

Render pipeline

Only the animated head (1.25s = 38 frames @30fps) is screenshotted. ffmpeg clones the last frame for the hold — tpad=stop_mode=clone:stop_duration=N. Rendering full windows would be ~320 screenshots instead of 114 for identical output.

# 1. frames  (Playwright steps window.setFrame(cardId, t) — deterministic, not CSS timing)
# 2. alpha clips
ffmpeg -framerate 30 -i seq/c1-%04d.png -vf "tpad=stop_mode=clone:stop_duration=1.98" -c:v qtrle c1.mov
# 3. composite: offset each card with setpts, gate with enable
[1:v]setpts=PTS+0.10/TB[a];
[0:v][a]overlay=0:0:eof_action=pass:repeatlast=0:enable='between(t,0.10,3.34)'[v1]

Hard-won gotchas

qtrle (in a .mov) is the alpha codec that works here. PNG sequences alone can't be offset on a timeline.
Never apad with -shortest — -shortest does not constrain filter_complex outputs, so apad emits infinite audio and the encode never terminates. Bound with -t.
-preset slow at 1080x1920 is too heavy on this box. veryfast + crf 20 is clean.
Captions need the baked-in scrim. Bright plates swallow cream text.
Drive animation per frame from JS, never CSS animation: — a screenshotter has no reliable way to pin CSS animation time, and you get torn frames.

Caption timing comes from the audio, not from taste

Render the VO first, then:

ffmpeg -i vo.wav -af "silencedetect=noise=-40dB:d=0.07" -f null /dev/null

Use the detected gaps as card boundaries. For a sentence with no internal pause, split by syllable weight, not character count — spoken numbers run far longer than they read.

Voice

Qwen3-TTS YOUR_TTS_HOST:5005, voice YOUR_VOICE_ID (Carl's real clone, carl-ref.wav). Verify against GET /v1/voices every time — that map was inverted once and shipped months of audio in the wrong voice. Normalise to -16 LUFS for social.

---name: gm-reel-motiondescription: Motion timing standard for every vertical reel — count-ups, wipes, staggers, easings. Use when building or reviewing any reel so the whole series moves identically.---# GM! Carl reel motion standardLocked 2026-09-12. Every reel from here uses this. Source: `reel-captions.html`(the `TIMING` + `EASE` block is the single source of truth), worked example in `reel-count/`.## The rules| Element | Motion | Timing ||---|---|---|| **Big number** | counts up 0 → value, easeOutExpo | starts 0.06s, runs 0.92s || **Big number** | scale 0.88 → 1.0, easeOutBack (slight overshoot) + fade | 0.00s, 0.38s || **Gold rule** | wipes out from centre, 0 → 220px, easeOutCubic | 0.30s, 0.45s || **Supporting line** | fade + rise 26px, easeOutCubic | 0.52s, 0.40s || **Body lines** | fade + rise 30px, **staggered 0.09s per line** | 0.00s, 0.46s each || **Source credit** | fade in last, always | 0.70s, 0.40s |**Why count-up and not a cut.** The whole campaign is called a count. A number thatrolls up reads as data being gathered; a number that cuts in reads as a claim. It alsobuys ~1s of attention on a stat that would otherwise be read and dismissed.**Never animate the source credit's text**, only its opacity. A moving citation lookslike decoration; a still one looks like evidence.## Render pipelineOnly the **animated head** (1.25s = 38 frames @30fps) is screenshotted. ffmpeg clonesthe last frame for the hold — `tpad=stop_mode=clone:stop_duration=N`. Rendering fullwindows would be ~320 screenshots instead of 114 for identical output.```bash# 1. frames (Playwright steps window.setFrame(cardId, t) — deterministic, not CSS timing)# 2. alpha clipsffmpeg -framerate 30 -i seq/c1-%04d.png -vf "tpad=stop_mode=clone:stop_duration=1.98" -c:v qtrle c1.mov# 3. composite: offset each card with setpts, gate with enable[1:v]setpts=PTS+0.10/TB[a];[0:v][a]overlay=0:0:eof_action=pass:repeatlast=0:enable='between(t,0.10,3.34)'[v1]```## Hard-won gotchas- **qtrle** (in a `.mov`) is the alpha codec that works here. PNG sequences alone can't be offset on a timeline.- **Never `apad` with `-shortest`** — `-shortest` does not constrain `filter_complex` outputs, so apad emits infinite audio and the encode never terminates. Bound with `-t`.- `-preset slow` at 1080x1920 is too heavy on this box. `veryfast` + `crf 20` is clean.- Captions need the baked-in scrim. Bright plates swallow cream text.- Drive animation **per frame from JS**, never CSS `animation:` — a screenshotter has no reliable way to pin CSS animation time, and you get torn frames.## Caption timing comes from the audio, not from tasteRender the VO first, then:```bashffmpeg -i vo.wav -af "silencedetect=noise=-40dB:d=0.07" -f null /dev/null```Use the detected gaps as card boundaries. For a sentence with no internal pause, splitby syllable weight, not character count — spoken numbers run far longer than they read.## VoiceQwen3-TTS `YOUR_TTS_HOST:5005`, voice **YOUR_VOICE_ID** (Carl's real clone, carl-ref.wav).Verify against `GET /v1/voices` every time — that map was inverted once and shippedmonths of audio in the wrong voice. Normalise to `-16 LUFS` for social.

Frequently asked questions

Gm Reel Motion