46 lines
1.8 KiB
Bash
Executable File
46 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Record docs/demo.gif via VHS. Runs setup, invokes `vhs docs/demo.tape`,
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# always tears down. Requires `vhs` (brew install vhs).
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set -euo pipefail
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cd "$(dirname "$0")/.."
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if ! command -v vhs >/dev/null 2>&1; then
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echo "demo-record: vhs not found on PATH (brew install vhs)" >&2
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exit 1
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fi
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if [ -z "${BOT_BOTTLE_OAUTH_TOKEN:-}" ]; then
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echo "demo-record: BOT_BOTTLE_OAUTH_TOKEN is unset; claude inside the bottle will not auth" >&2
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exit 1
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fi
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if ! command -v ffmpeg >/dev/null 2>&1; then
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echo "demo-record: ffmpeg not found on PATH (brew install ffmpeg) — needed for decimation pass" >&2
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exit 1
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fi
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bash scripts/demo-setup.sh
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trap 'bash scripts/demo-teardown.sh' EXIT
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vhs docs/demo.tape
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# VHS records in real time, which leaves long static stretches while
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# the bottle launches and commands wait for output. Run mpdecimate to
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# drop duplicate consecutive frames (TUI dead time) and re-time at
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# 12 fps. tpad clones the final frame for 4s so the gitleaks
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# rejection on the last beat dwells long enough to read on each GIF
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# loop. Re-encode through a 64-color palette to keep the file small.
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tmp=$(mktemp -d)
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trap 'bash scripts/demo-teardown.sh; rm -rf "$tmp"' EXIT
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cp docs/demo.gif "$tmp/raw.gif"
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ffmpeg -y -i "$tmp/raw.gif" \
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-vf "mpdecimate,setpts=N/12/TB,tpad=stop_duration=4:stop_mode=clone,scale=960:-1:flags=lanczos,palettegen=max_colors=64" \
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"$tmp/palette.png" -loglevel error
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ffmpeg -y -i "$tmp/raw.gif" -i "$tmp/palette.png" \
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-lavfi "mpdecimate,setpts=N/12/TB,tpad=stop_duration=4:stop_mode=clone,scale=960:-1:flags=lanczos[x];[x][1:v]paletteuse=dither=bayer:bayer_scale=5" \
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docs/demo.gif -loglevel error
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echo "demo-record: wrote $(ls -lh docs/demo.gif | awk '{print $5}') ($(ffprobe -v error -show_entries stream=duration -of default=nk=1:nw=1 docs/demo.gif | cut -d. -f1)s)"
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