test: MP4 high quality fallback (CRF 15)#270
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test: MP4 high quality fallback (CRF 15)#270devin-ai-integration[bot] wants to merge 1 commit intoperf/optimize-landing-assetsfrom
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Previous CRF 23 encoding was visually degraded. CRF 15 gives much better quality while still being smaller than the original videos: - hero: 1.9MB (CRF 15) vs 2.6MB (original) — 25% reduction - trophy: 1.0MB (CRF 15) vs 2.3MB (original) — 55% reduction Co-Authored-By: Junho Yeo <i@junho.io>
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Summary
Re-encodes both landing page MP4 fallback videos (
hero-video-transparent.mp4,trophy-cup-transparent.mp4) at CRF 15 instead of CRF 23 to improve visual quality on Safari/iOS, where the MP4 fallback is used because Safari doesn't reliably play VP9 WebM.This is a test branch for comparing quality/size tradeoffs against an alternative approach (
test/libavjs-polyfill). Not intended for direct merge.File size comparison:
Review & Testing Checklist for Human
test/libavjs-polyfillbranch — the other test branch uses a WebCodecs polyfill to play WebM natively on Safari, avoiding the MP4 quality issue entirely but adding JS/WASM overhead.Notes
Summary by cubic
Re-encoded the landing page MP4 fallbacks (hero-video-transparent.mp4, trophy-cup-transparent.mp4) at CRF 15 to improve visual quality on Safari/iOS. This test branch evaluates the quality gain against larger files (~2.9MB total vs ~1.2MB at CRF 23) and against the WebM polyfill approach.
Written for commit 40dc63c. Summary will update on new commits.