survandClaude Opus 5.5
da992c139a
make_clips.sh renders lossless FFV1 4K60 test clips through the Makefile's colour conversion; sweep.sh encodes them with a list of ffmpeg configs and scores each with VMAF 4K (mean/p1/min), VMAF-NEG, CAMBI banding and PSNR-Y. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
67 lines
2.6 KiB
Bash
Executable File
67 lines
2.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Render the lossless 4K60 test clips that sweep.sh encodes.
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#
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# Each clip goes through the same RGBA -> bt709 tv-range 10-bit conversion as
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# the Makefile, then into lossless FFV1. The clips are therefore exactly what the
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# encoders see, so VMAF against them measures the encoder alone.
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#
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# tools/encode/make_clips.sh [--size WxH] [--seconds S] [--force] [clip...]
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set -euo pipefail
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here=$(cd "$(dirname "$0")" && pwd)
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root=$(cd "$here/../.." && pwd)
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out="$here/clips"
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size=3840x2160
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seconds=4
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fps=60
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force=0
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only=()
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while [[ $# -gt 0 ]]; do
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case $1 in
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--size) size=$2; shift 2 ;;
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--seconds) seconds=$2; shift 2 ;;
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--force) force=1; shift ;;
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-h|--help) sed -n '2,9p' "$0"; exit 0 ;;
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*) only+=("$1"); shift ;;
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esac
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done
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# Seahorse valley, minibrot at 3.7e-41 (tools/deep-zoom/LOCATIONS.md).
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SH_RE=-0.77568376800905379745347652613832924487504096622022
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SH_IM=0.13646736829469012473375311880735014411233827361594
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# name | mandelbrot flags. Zoom speeds bracket a typical 60 s dive (~0.7 decade/s).
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clips=(
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# Worst case: dense filaments, 1.5 decades/s of scaling motion.
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"filaments|--view=$SH_RE,$SH_IM,1e-8 --to-view=$SH_RE,$SH_IM,3e-15 --linear"
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# Smooth concentric bands closing in on the minibrot: banding/blocking risk.
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"bands|--view=$SH_RE,$SH_IM,1e-38 --to-view=$SH_RE,$SH_IM,1.1e-40 --linear"
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# Embedded Julia set, slow drift: fine static texture, psy/detail retention.
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"julia|--view=$SH_RE,$SH_IM,2e-30 --to-view=$SH_RE,$SH_IM,1e-30 --linear"
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)
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[[ -x $root/target/release/mandelbrot ]] || cargo build --release --manifest-path "$root/Cargo.toml"
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mkdir -p "$out"
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w=${size%x*}
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h=${size#*x}
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for entry in "${clips[@]}"; do
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name=${entry%%|*}
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flags=${entry#*|}
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if [[ ${#only[@]} -gt 0 && ! " ${only[*]} " =~ " $name " ]]; then continue; fi
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dst="$out/$name.mkv"
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if [[ -f $dst && $force = 0 ]]; then echo "skip $name (exists, --force to redo)"; continue; fi
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echo "render $name ($size, ${seconds}s @ ${fps}fps)"
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# shellcheck disable=SC2086
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"$root/target/release/mandelbrot" --headless --antialias $flags \
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--width "$w" --height "$h" --fps "$fps" --duration "$seconds" --export-path - |
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ffmpeg -hide_banner -loglevel error -y \
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-f rawvideo -pix_fmt rgba -s "$size" -framerate "$fps" -i - \
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-vf "scale=out_color_matrix=bt709:out_range=tv:flags=accurate_rnd+full_chroma_int+bitexact,format=yuv420p10le" \
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-c:v ffv1 -level 3 -slices 16 -g 1 \
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-colorspace bt709 -color_primaries bt709 -color_trc bt709 -color_range tv \
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"$dst.tmp.mkv"
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mv "$dst.tmp.mkv" "$dst"
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done
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