name: webcodecs-string-finder description: Finds valid WebCodecs strings for video and audio by researching codec support tables and detailed specifications on webcodecsfundamentals.org. repository: https://github.com/socratescli/webcodecs-string-finder-skill.git version: "1.0.0"

WebCodecs String Finder

This skill helps you find the most supported and appropriate codec strings for WebCodecs, whether for video or audio.

Workflow

1. Requirements Gathering

Understand the user's requirements:

• Type: Video or Audio?
• Platform: Chrome, Edge, Android, iOS, etc.?
• Resolution: 1080p, 4k, etc. (for video)?
• Codec Name: h264 (avc1), h265 (hev1/hvc1), vp9, av1, opus, aac, etc.?

2. Search for Supported Codecs

Use web_fetch to access the codec support table:

• URL: https://webcodecsfundamentals.org/datasets/codec-support-table/
• Identify the most supported codecs based on the requirement (platform and codec type).

3. Confirm Codec Details

For the top candidates found in the previous step, confirm their details:

• Use web_fetch to visit the detail page: https://webcodecsfundamentals.org/codecs/<CODEC-STRING>.html
• Replace <CODEC-STRING> with the identified candidate (e.g., avc1.42e01e).
• Verify that it meets the specific requirements (e.g., profile, level, platform support).

4. Recommendation

Return the 2-3 most fitted codec strings.

• Provide a brief explanation of why each was chosen.
• Include the browser/platform support if relevant.

Tips

• Common video codec strings: avc1.42e01e (H.264 Baseline), avc1.4d401f (H.264 Main), hev1.1.6.l93.b0 (H.265), vp09.00.10.08 (VP9).
• Common audio codec strings: opus, mp4a.40.2 (AAC-LC).
• When in doubt, prefer widely supported codecs like H.264 and Opus for maximum compatibility.