File size: 4,204 Bytes
dd56ce1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | #!/usr/bin/env bash
#
# VSTAT — Apply privacy redactions (black boxes) to YouTube clips.
#
# Coordinates are in 640x360 (post-scale) space, matching the official
# VSTAT release. After this script runs, every redaction-target chunk
# lives at the canonical `videos/youtube/<cat>/<id>_pt*.mp4` path with
# the black boxes baked in. Any leftover `*_redacted.mp4` siblings from
# earlier runs are removed.
#
# Usage (run from vstat/ root):
# ./scripts/redact.sh
# ./scripts/redact.sh --dry-run
#
set -eo pipefail
DRY=0
for arg in "$@"; do
case "$arg" in
--dry-run) DRY=1 ;;
-h|--help) sed -n '2,15p' "$0"; exit 0 ;;
*) echo "Unknown arg: $arg" >&2; exit 1 ;;
esac
done
# Format: "<canonical-glob>|<ffmpeg drawbox filter>"
RULES=(
# tennis 0001
"videos/youtube/tennis/0001_pt*.mp4|drawbox=x=32:y=306:w=134:h=38:color=black:t=fill"
# tennis 0002
"videos/youtube/tennis/0002_pt*.mp4|drawbox=x=32:y=306:w=134:h=38:color=black:t=fill"
# basketball 0002
"videos/youtube/basketball/0002_pt*.mp4|drawbox=x=98:y=323:w=443:h=37:color=black:t=fill"
# basketball 0003
"videos/youtube/basketball/0003_pt*.mp4|drawbox=x=22:y=285:w=125:h=63:color=black:t=fill"
# soccer 0002 (two boxes)
"videos/youtube/soccer/0002_pt*.mp4|drawbox=x=0:y=0:w=122:h=19:color=black:t=fill,drawbox=x=140:y=320:w=360:h=40:color=black:t=fill"
)
if ! command -v ffmpeg >/dev/null 2>&1; then
echo "ERROR: ffmpeg not installed. brew install ffmpeg / apt install ffmpeg" >&2
exit 1
fi
# Expand a canonical glob to the union of canonical paths it covers,
# accounting for files that currently live with `_redacted` suffix.
# Compatible with bash 3.2 (macOS default) — no associative arrays.
canonical_paths_for_glob() {
glob="$1"
dir=$(dirname "$glob")
pat=$(basename "$glob") # 0001_pt*.mp4
shopt -s nullglob
results=""
for f in "$dir"/$pat "$dir"/${pat%.mp4}_redacted.mp4; do
[ -e "$f" ] || continue
case "$f" in
*_redacted.mp4) base="${f%_redacted.mp4}.mp4" ;;
*) base="$f" ;;
esac
results="${results}${base}"$'\n'
done
shopt -u nullglob
printf '%s' "$results" | sort -u | sed '/^$/d'
}
total=0; ok=0; fail=0; missing=0
for rule in "${RULES[@]}"; do
glob="${rule%%|*}"
filt="${rule#*|}"
echo
echo "=== $glob ==="
echo " filter: $filt"
paths=$(canonical_paths_for_glob "$glob")
if [ -z "$paths" ]; then
echo " (no matching files)"
continue
fi
while IFS= read -r canon; do
[ -z "$canon" ] && continue
total=$((total+1))
redacted_sibling="${canon%.mp4}_redacted.mp4"
# Pick input: prefer existing _redacted sibling, fall back to canonical.
if [ -f "$redacted_sibling" ]; then
input="$redacted_sibling"
elif [ -f "$canon" ]; then
input="$canon"
else
echo " ! missing both $canon and $redacted_sibling"
missing=$((missing+1))
continue
fi
if [ "$DRY" -eq 1 ]; then
echo " [DRY] $input =[$filt]=> $canon"
ok=$((ok+1))
continue
fi
# Write to a temp file then atomically swap.
# `-nostdin` is REQUIRED here: without it ffmpeg consumes characters
# from the surrounding `while read` loop's stdin, mangling later paths.
tmp="${canon%.mp4}.redact.tmp.mp4"
if ! ffmpeg -y -loglevel error -nostdin -i "$input" -vf "$filt" -c:a copy "$tmp"; then
echo " ! ffmpeg failed: $input"
fail=$((fail+1))
continue
fi
if cp -f "$tmp" "$canon" && rm -f "$tmp"; then
:
else
echo " ! could not write $canon (kept tmp at $tmp)"
fail=$((fail+1))
continue
fi
# Drop misleading `_redacted.mp4` sibling now that the canonical file
# holds the actually-redacted content.
if [ -f "$redacted_sibling" ] && [ "$redacted_sibling" != "$canon" ]; then
rm -f "$redacted_sibling" 2>/dev/null || true
fi
ok=$((ok+1))
echo " -> $canon"
done <<< "$paths"
done
echo
echo "============================================================"
echo " total: $total ok: $ok fail: $fail missing: $missing"
echo "============================================================"
[ "$fail" -eq 0 ] && [ "$missing" -eq 0 ]
|