[Project516]

load({ classWorkerURL }) fails in the UMD build with Cannot find module 'blob:...'. Webpack compiles new URL(classWorkerURL, import.meta.url) with a non-literal first argument into a module context lookup, so any URL passed at runtime misses.

The URL is now built through a helper. The ESM build still resolves it against import.meta.url. The UMD build has no module URL, so it resolves against self.location.href, which is what new Worker() does with a relative URL anyway.

Checked by building dist/umd/ffmpeg.js before and after: the old bundle contains the Cannot find module stub, and the new one calls new Worker(new URL(url, self.location.href)). #88's browser test passes a blob: classWorkerURL through the UMD build and will exercise this once rebased.

[coderabbitai]

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Reviewing files that changed from the base of the PR and between 99a5cc5 and c0afb41.

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• CHANGELOG.md
• packages/ffmpeg/src/classes.ts

• Autopilot · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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[project516-review-bot]

The change fixes the UMD build's handling of classWorkerURL by introducing a helper function resolveWorkerURL that uses self.location.href as the base for UMD builds and import.meta.url for ESM builds. This prevents Webpack from misinterpreting non-literal URLs as module lookups. The CHANGELOG is updated to reflect the fix.

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_{review-bot, model nvidia/nemotron-3-super-120b-a12b:free, verdict approve}