Embeddings
ruvnet/ruflo
Vector embeddings with HNSW indexing, sql.js persistence, and hyperbolic support.
A skill your agent uses when reviewing <video elements, background/hero video, or embedded media assets.
MITAuto-check passed
Install Video Optimization
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist video-optimization --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/video-optimization .claude/skills/video-optimization && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .claude/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimizationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist video-optimization --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/video-optimization .agents/skills/video-optimization && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .agents/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist video-optimization --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/video-optimization .cursor/skills/video-optimization && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .cursor/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/video-optimization--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist video-optimization --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/video-optimization .gemini/skills/video-optimization && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .gemini/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist video-optimizationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/video-optimization .github/skills/video-optimization && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .github/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist video-optimization --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/video-optimization .opencode/skills/video-optimization && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "video-optimization" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/video-optimization into .opencode/skills/video-optimization/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "video-optimization", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
video-optimization- GitHub stars
- 74k
- Token cost
- ~808 tokens
- SKILL.md length
- 391 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing <video elements, background/hero video, or embedded media assets.
- Reviewing <video elements
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Background/hero video
What it does
Video Optimization is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing <video elements, background/hero video, or embedded media assets. Check encoded bitrate, resolution relative to the rendered player size, codec/container choice, and whether a poster/thumbnail avoids blocking on the first frame.
Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing <video elements
- Background/hero video
- Embedded media assets
Example prompts
- “/video-optimization”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Video Optimization loads about 808 tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 67 tokens; SKILL.md has 391 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 391 words, ~808 tokens.
Download SKILL.mdSave it as
.claude/skills/video-optimization/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- video-optimization
- description
- Use when reviewing <video> elements, background/hero video, or embedded media assets. Check encoded bitrate, resolution relative to the rendered player size, codec/container choice, and whether a poster/thumbnail avoids blocking on the first frame.
- metadata.category
- performance
- metadata.priority
- high
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 20
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/performance/video-optimization
Optimize and compress web videos
Unoptimized video is frequently the single heaviest asset on a page—an uncompressed or oversized video can dwarf every image and script combined, delaying Largest Contentful Paint and burning mobile data budgets.
Quick Reference
- Re-encode source video instead of shipping raw camera/screen-recorder output
- Serve multiple resolutions so mobile doesn't download a 4K file
- Prefer modern codecs: AV1/VP9/HEVC over baseline H.264 where supported
- Strip audio tracks from silent background/looping videos
Check
Scan this codebase for <video> elements and video asset references. For each one, verify: 1) The served resolution is appropriate for the rendered player size and device (no 4K video in a 400px player). 2) The codec/container is efficient (H.264 baseline is acceptable but VP9/AV1/HEVC is preferred when available). 3) Audio is stripped from silent background/looping videos. 4) A poster attribute or lightweight thumbnail is present. 5) File size is reasonable for its duration and placement (hero/background videos under a few MB). Report issues grouped by severity with file paths.
Fix
For each video optimization issue found: 1) Re-encode to multiple resolutions (e.g. 480p/720p/1080p) and serve the smallest one that fits the player via <source> or JS-based selection. 2) Convert to an efficient codec (VP9 or AV1 in WebM, or HEVC/H.264 in MP4) with a reasonable CRF/ quality setting rather than default encoder settings. 3) Remove the audio track from muted background/looping videos. 4) Add a poster attribute pointing to a compressed thumbnail. 5) Add preload="metadata" (or "none") instead of "auto" for below-the-fold videos. Show the corrected <video> markup and encoding command.
Show full SKILL.md (135 more words)Show less
Explain
Explain why video is often the largest asset on a page and how it affects Largest Contentful Paint and mobile data usage. Cover the tradeoffs between H.264, HEVC, VP9, and AV1 (compression efficiency vs browser/ device support and encode time), how resolution and bitrate should scale to the rendered player size and viewport, and why muted background video should have its audio track stripped entirely rather than just muted in markup.
Code Review
Review video assets, <video>/<source> markup, and any encoding or CDN transform pipeline related to Optimize and compress web videos. Flag exact files or components where resolution, codec, bitrate, or loading behavior violates the rule, and describe how to confirm the fix in DevTools' Network and Media panels.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/performance/video-optimization
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/video-optimization of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Video Optimization next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Video Optimization this skillthedaviddias/Front-End-Checklist | 74k | — | ~808 | Automated safety check: Pass | MIT | |
| Embeddingsruvnet/ruflo | 74k | 3 repos | ~455 | Automated safety check: Pass | MIT | |
| Embedding Strategieswshobson/agents | 40k | 11 repos | ~710 | Automated safety check: Pass | MIT | |
| Embeddings via 9Routerdecolua/9router | 30k | — | ~604 | Automated safety check: Pass | MIT | |
| Video Template Frame Liquid Bg Heronexu-io/open-design | 100k | — | ~332 | Automated safety check: Pass | Apache-2.0 | |
| Embeddingsalsk1992/CloddsBot | 2.9k | 1 repos | ~1.3k | Automated safety check: Pass | MIT |
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Questions about Video Optimization
What does Video Optimization do?
A skill your agent uses when reviewing <video elements, background/hero video, or embedded media assets. Video Optimization is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing <video elements, background/hero video, or embedded media assets.
When should I use Video Optimization?
Video Optimization fits situations like: reviewing <video elements; background/hero video; embedded media assets.
How do I install Video Optimization in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a claude-code`. Or copy the skill folder (skills/video-optimization in thedaviddias/Front-End-Checklist) into .claude/skills/video-optimization in your project. Claude Code loads it when a task matches its description.
How do I install Video Optimization in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a codex`. Or copy the skill folder (skills/video-optimization in thedaviddias/Front-End-Checklist) into .agents/skills/video-optimization in your project. Codex loads it when a task matches its description.
Can I use Video Optimization in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill video-optimization -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/video-optimization, .gemini/skills/video-optimization, .github/skills/video-optimization and .opencode/skills/video-optimization in your project.
What does Video Optimization need to run?
SKILL.md names no scripts, command-line tools or credentials: Video Optimization is instructions for the agent only.
Does Video Optimization access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Video Optimization safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Video Optimization use?
Video Optimization is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Video Optimization use?
About 808 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.2k tokens, read only when the agent opens those files.
What are the alternatives to Video Optimization?
Skills that share tags, products or a category with Video Optimization: Embeddings (ruvnet/ruflo, 74k stars), Embedding Strategies (wshobson/agents, 40k stars), Embeddings via 9Router (decolua/9router, 30k stars) and Video Template Frame Liquid Bg Hero (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Video Optimization?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,398 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.