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Skip actively seeded files in transcode-hevc via qBittorrent API

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Queries qBittorrent for individual file sizes of all active torrents.
Files whose size matches a seeded torrent file are skipped, catching
cross-filesystem copies where hardlink detection doesn't work.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
ediblerope 2026-04-15 19:31:37 +01:00
parent c8c7606eb7
commit 5f31149565
2 changed files with 48 additions and 1 deletions
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2
hosts/FredOS-Mediaserver.nix
View file

@ -18,7 +18,7 @@
yt-dlp
ghostty.terminfo
(pkgs.writeShellScriptBin "transcode-hevc" ''
export PATH="${pkgs.jellyfin-ffmpeg}/bin:${pkgs.coreutils}/bin:${pkgs.findutils}/bin:${pkgs.gnugrep}/bin:${pkgs.gawk}/bin:${pkgs.bc}/bin:$PATH"
export PATH="${pkgs.jellyfin-ffmpeg}/bin:${pkgs.coreutils}/bin:${pkgs.findutils}/bin:${pkgs.gnugrep}/bin:${pkgs.gawk}/bin:${pkgs.bc}/bin:${pkgs.curl}/bin:$PATH"
exec ${pkgs.bash}/bin/bash ${../scripts/transcode-hevc.sh} "$@"
'')
];

47
scripts/transcode-hevc.sh
View file

@ -21,10 +21,40 @@ LOG_FILE="/var/log/transcode-hevc.log"
CRF="${TRANSCODE_CRF:-24}"
PRESET="${TRANSCODE_PRESET:-medium}"
DRY_RUN="${DRY_RUN:-0}"
QB_URL="${QB_URL:-http://localhost:8080}"
# Duration tolerance in seconds (allow 1s difference)
DURATION_TOLERANCE=1
# Build a set of file sizes actively seeded in qBittorrent.
# Queries each torrent's individual files for accurate per-file sizes.
# Radarr/Sonarr may rename files but preserve size, so matching by size
# reliably detects copies of seeded content across filesystems.
build_seeded_sizes() {
local sizes_file="/tmp/transcode-hevc-seeded-sizes"
rm -f "$sizes_file"
touch "$sizes_file"
local hashes
hashes=$(curl -sf "${QB_URL}/api/v2/torrents/info" \
| tr '}' '\n' | grep -o '"hash":"[^"]*"' | cut -d'"' -f4) || return 1
for hash in $hashes; do
curl -sf "${QB_URL}/api/v2/torrents/files?hash=${hash}" \
| tr '}' '\n' | grep -o '"size":[0-9]*' | cut -d: -f2 \
>> "$sizes_file" 2>/dev/null || true
done
sort -u -o "$sizes_file" "$sizes_file"
echo "$sizes_file"
}
is_seeded_size() {
local size="$1"
local sizes_file="$2"
[[ -n "$sizes_file" ]] && grep -Fxq "$size" "$sizes_file" 2>/dev/null
}
usage() {
echo "Usage: transcode-hevc [OPTIONS] <directory>"
echo ""
@ -116,6 +146,16 @@ touch "$DONE_LOG"
log "Starting transcode run on: $SEARCH_DIR (CRF=$CRF, preset=$PRESET)"
# Build lookup of file sizes currently being seeded in qBittorrent
SEEDED_SIZES=""
if SEEDED_SIZES=$(build_seeded_sizes); then
seeded_count=$(wc -l < "$SEEDED_SIZES")
log "Loaded $seeded_count unique file sizes from qBittorrent (will skip matches)"
else
log "WARNING: Could not reach qBittorrent API — seeded file detection disabled"
SEEDED_SIZES=""
fi
# Counters
total=0
skipped_hevc=0
@ -160,6 +200,13 @@ while IFS= read -r -d '' file; do
fi
original_size=$(stat -c%s "$file")
# Skip files whose size matches an actively seeded torrent file in qBittorrent
# (catches cross-filesystem copies where hardlink detection doesn't work)
if is_seeded_size "$original_size" "$SEEDED_SIZES"; then
log "Skipping (size matches seeded torrent): $file"
continue
fi
original_size_h=$(get_size_human "$file")
original_duration=$(get_duration "$file")