diff --git a/README.md b/README.md
index 0a9df81..a9c9b82 100644
--- a/README.md
+++ b/README.md
@@ -109,3 +109,18 @@ do not use it to conclude a token is dead.
 yt-dlp reads cookies from a running Firefox. Chrome/Edge lock their cookie DB
 while running (yt-dlp issue 7271), and an unattended job cannot close the
 browser to read them.
+
+### The stream never ends
+
+After full time the feed switches to a static league slate and keeps serving
+indefinitely at full CBR bitrate (~4.7 Mbit/s to encode a still image). There
+is no `#EXT-X-ENDLIST`, so ffmpeg never finishes, and there is no stall to
+detect either -- from the downloader's point of view it is a healthy live
+stream forever.
+
+**A hard duration cap is therefore the only stop condition.** `catcher.py`
+passes `ffmpeg_o:-t $DURATION_MIN*60`. Do not remove it; without it an
+unattended run fills the disk with a logo.
+
+Observed: 116 min recorded for a 23:00 kickoff, still going at 01:04 and only
+stopped manually. Budget ~3.5-4 GB per copy per match at 40 MB/min.
diff --git a/endwatch.sh b/endwatch.sh
new file mode 100644
index 0000000..54cc7c7
--- /dev/null
+++ b/endwatch.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# Watch a live recording until its downloaders exit, and record HOW they ended.
+#
+# The question this answers: when the stream stops, does ffmpeg finish cleanly
+# on #EXT-X-ENDLIST, or does it hang until something kills it? Unattended
+# recording depends on the answer -- a job that never exits needs a hard cap.
+set -u
+cd "$(dirname "$0")"
+LOG=logs/endwatch.log
+mkdir -p logs
+
+say() { echo "[$(date '+%H:%M:%S')] $*" | tee -a "$LOG"; }
+
+say "endwatch start"
+LAST_TOTAL=0
+STALL=0
+
+while true; do
+  N=$(tasklist //FI "IMAGENAME eq ffmpeg.exe" 2>/dev/null | grep -c ffmpeg.exe)
+  TOTAL=0
+  for f in recordings/*; do
+    [ -f "$f" ] && TOTAL=$(( TOTAL + $(stat -c%s "$f") ))
+  done
+  MB=$(( TOTAL / 1048576 ))
+  GROW=$(( (TOTAL - LAST_TOTAL) / 1024 ))
+
+  if [ "$TOTAL" -eq "$LAST_TOTAL" ]; then
+    STALL=$(( STALL + 1 ))
+  else
+    STALL=0
+  fi
+  LAST_TOTAL=$TOTAL
+
+  say "ffmpeg=$N  total=${MB}MB  grew=${GROW}KB  stalled_ticks=$STALL"
+
+  if [ "$N" -eq 0 ]; then
+    say "ALL DOWNLOADERS EXITED -- stream ended and ffmpeg finished on its own"
+    break
+  fi
+  if [ "$STALL" -ge 10 ]; then
+    say "STALLED: files not growing for ~5min but ffmpeg still alive"
+    say "  -> it does NOT self-terminate cleanly; unattended runs need a hard cap"
+    break
+  fi
+  sleep 30
+done
+
+say "final state:"
+for f in recordings/*; do
+  [ -f "$f" ] || continue
+  D=$(ffprobe -v error -show_entries format=duration -of csv=p=0 "$f" 2>/dev/null)
+  say "  $(basename "$f")  $(( $(stat -c%s "$f") / 1048576 ))MB  duration=${D:-unknown}s"
+done
+say "endwatch done"