Memory-Safe Media Preflight in Mobile Browsers

Short summary

Outlines memory-safe patterns for client-side media preflight in mobile browsers, where decoded images can be 10x their compressed size. Recommends queued decoding with one active task on constrained devices, createImageBitmap with resize hints for off-main-thread previews, and AbortController for cleanup. Stresses releasing bitmaps and object URLs promptly, avoiding full video reads into ArrayBuffer, and reporting errors per file rather than failing the batch.

• •Decode one file at a time on constrained devices; use createImageBitmap with resize hints for small previews
• •Always close bitmaps, revoke object URLs, and use AbortController for cleanup when files are removed or page navigates
• •Report errors per file so one invalid contribution doesn't discard nineteen valid ones

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