ErickWendel/semana-javascript-expert08 resource

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2442 stars · 1494 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The starter code and lesson materials for Erick Wendel's JS Expert Week 8.0, a hands-on course project that pre-processes videos in the browser before upload. It demonstrates parsing MP4 files, converting fragments to 144p WebM using WebCodecs, Web Workers, and real-time canvas frame rendering.

Use cases

• pre-process videos in the browser before uploading
• learn WebCodecs API for video encoding and decoding
• demux and mux MP4 and WebM files in JavaScript
• offload video processing to Web Workers
• convert video fragments to lower resolution like 144p
• render video frames in real time on a canvas
• learn browser-based video streaming techniques

When to choose

• you want a guided, project-based tutorial on browser video processing
• you need a working reference for WebCodecs, mp4box demuxing, and web workers
• you are following JS Expert Week 8.0 lessons and challenges

When to avoid

• you need a production-ready video processing library rather than educational code
• you need server-side video transcoding at scale
• you need audio track encoding, which is left as a challenge
• you require a licensed, maintained dependency - the repo has no license file

Facets

learning-resource · maturity active

video-processing developer-tools web-development tutorials education browser webcodecs web-workers mp4 webm muxer demuxer video-uploading course-project javascript-expert-week video nodejs web javascript

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