2026-04-11 18:42:57 +02:00
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#!/bin/sh
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# Compress MP4 page-bundle videos with FFmpeg before Hugo builds.
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#
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# Usage: sh scripts/compress-videos.sh [content-dir]
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#
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# Encoding choices:
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# H.264 CRF 28 — good web quality, ~60-80% smaller than camera/AI originals
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# preset slow — best compression for a given CRF (fine in CI/Docker)
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# faststart — moov atom moved to front for progressive streaming
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# aac 64k — low-bitrate audio (videos are muted in-player by default)
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#
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# The script replaces each source file in-place only when the compressed
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# output is actually smaller, so already-lean videos are left untouched.
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set -e
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CONTENT_DIR="${1:-content}"
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find "$CONTENT_DIR" -name "*.mp4" | while IFS= read -r src; do
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tmp="${src%.mp4}.__tmp.mp4"
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echo "▶ $src"
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ffmpeg -i "$src" \
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-c:v libx264 \
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-crf 28 \
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-preset slow \
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-movflags +faststart \
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-c:a aac \
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-b:a 64k \
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-loglevel error \
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2026-04-11 18:45:10 +02:00
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-y "$tmp" < /dev/null
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2026-04-11 18:42:57 +02:00
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src_size=$(stat -c%s "$src" 2>/dev/null || stat -f%z "$src")
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tmp_size=$(stat -c%s "$tmp" 2>/dev/null || stat -f%z "$tmp")
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if [ "$tmp_size" -lt "$src_size" ]; then
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mv "$tmp" "$src"
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saved=$(( (src_size - tmp_size) / 1024 ))
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echo " ✓ ${src_size} → ${tmp_size} bytes (−${saved} KB)"
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else
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rm -f "$tmp"
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echo " — already optimal, skipped"
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fi
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done
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echo "Done."
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