diff --git a/README.md b/README.md
index b25c062..e5c0be3 100644
--- a/README.md
+++ b/README.md
@@ -320,9 +320,16 @@ frame that exists is still at the right time — the timecode stays correct, and
 hold the last frame across the hole with audio in sync. By default the sweep does **not** re-encode a stream to
 fill holes (hours of CPU on this box); the sidecar lists them (`gaps.count`, `total_missing_ms`, first 50
 positions). Premiere preserves timing on such files; in Resolve check the clip's frame-rate interpretation.
-Opt-in filling: `Environment=FILL_GAPS_MS=1000` in `normalize-sweep.service` makes the sweep re-encode any
-stream whose holes total ≥ 1 s to constant frame rate with duplicated frames (raw kept in `.src/`, timecode
-carried over). Sensible once the box has a hardware encoder (SYS-3). Clips are always converted to CFR.
+**Gap filling (available, off by default).** The sweep can re-encode a stream whose holes total at least
+`FILL_GAPS_MS` milliseconds to constant frame rate with duplicated frames (raw kept in `.src/`, timecode carried
+over). It costs ~2× the stream length in CPU on the E-2136, so it is off until the box has a hardware encoder.
+Turn it on (threshold 1 s) / off, on the server:
+
+    sudo sed -i 's|^#* *Environment=FILL_GAPS_MS=.*|Environment=FILL_GAPS_MS=1000|' /etc/systemd/system/normalize-sweep.service && sudo systemctl daemon-reload
+    sudo sed -i 's|^Environment=FILL_GAPS_MS=.*|# Environment=FILL_GAPS_MS=1000|' /etc/systemd/system/normalize-sweep.service && sudo systemctl daemon-reload
+
+Check: `systemctl show normalize-sweep -p Environment`. Takes effect on the next sweep run; already-published
+files are not revisited. Clips are always converted to CFR regardless.
 
 ## Layout on the server
 
diff --git a/STATUS.md b/STATUS.md
index 1b7b86a..5b492a0 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -83,7 +83,7 @@ Source of truth: this repo, `techy/Media-Server-Setup` on the stack's own Gitea
 - Caddy runs in a container: anything it serves from disk must be a mount (`/srv/live` was missing → 404).
 - Go Live quality depends on the browser's encoder: Windows Chrome uses the GPU (fine); Linux Chromium on NVIDIA is software H.264 Baseline (soft at any bitrate, CPU-limited at 1440p60) and cannot be fixed by flags — Linux streamers use OBS. The stats strip shows encoder + profile.
 - Several videos inside one non-season folder = ONE Jellyfin episode with "versions". Streams are therefore published flat as `<Title>__<ts>.mp4` in the streamer's folder (plugin 0.1.3 parses the title from the name). Four or five helmet cams a night each get their own episode.
-- Streams are never re-encoded for VFR/gaps (dropped frames are legitimate; a 3 h re-encode is hours of CPU). The timecode sidecar lists gaps instead. Clips still get CFR.
+- Streams are not re-encoded for VFR/gaps by default (dropped frames are legitimate; a 3 h re-encode is hours of CPU); players hold the last frame across a gap. The timecode sidecar lists gaps. **Gap filling is available** (`FILL_GAPS_MS` in `normalize-sweep.service`, README "Timecode") — turn on when the box has a hardware encoder. Clips always get CFR.
 - The sweep's VFR check used a gawk-only function; Debian's mawk made it pass everything silently. Portable now.
 - A deploy block that is only half-run leaves old binaries in `/usr/local/bin`; `grep -c` the installed script before blaming logic.
 - MediaMTX hot-reloads `paths`/recording settings but NOT `authMethod`/auth settings: those need a container restart (between streams).