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Miguel ÁngelandClaude Opus 4.8
1faeba4aa5
`crossorigin` on <video>/<audio> forces a CORS-checked fetch. The server-side renderer downloads media directly (no CORS) so renders always work, but Studio preview runs in the browser — a media host that omits Access-Control-Allow-Origin silently fails the load, so the media shows blank/black in preview while the render looks fine, hiding the bug. Plain displayed media never needs crossorigin; it's only required to read pixels/samples back (canvas/WebGL texture, WebAudio createMediaElementSource) and only when the host is known CORS-enabled. New rule media_crossorigin_breaks_preview flags it as an error with that guidance. Claude-Session: https://claude.ai/code/session_01NsmfF5FzhqXY6hZ8buXgUE Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>