Let me search for more specific information about libmedia and iOS Safari limitations.
◈ Exa Web Search "libmedia AVTranscoder iOS Safari performance file size limitations WASM 2024"
◈ Exa Web Search "iPhone Safari file upload size limit blob memory WebAssembly"
Thinking: Based on the search results, I can now provide a comprehensive answer about Option 2 (libmedia/AVTranscoder) and its viability on iPhone Safari:
Key findings:
1. iOS Safari WASM Memory Issues:
- There's a history of Out-Of-Memory (OOM) errors on iOS when using WASM (GitHub issue from 2022 shows "Unhandled Promise Rejection: RangeError: Out of Memory" on iOS 15.2)
- ffmpeg.wasm has a 2GB file size limit (GitHub issue #623)
- Safari WASM was limited to 2GB until 2021, now supports up to 4GB but with memory fragmentation issues
