diff --git a/testdata/moonfire-nvr/movement_detection_via_api_ffmpeg.sh b/testdata/moonfire-nvr/movement_detection_via_api_ffmpeg.sh
index 872bac0..c051208 100644
--- a/testdata/moonfire-nvr/movement_detection_via_api_ffmpeg.sh
+++ b/testdata/moonfire-nvr/movement_detection_via_api_ffmpeg.sh
@@ -7,22 +7,21 @@ main() {
    for uuid in $(
       api /api/ | jq -r .cameras[].uuid
    ); do
-      local streams=(main sub)
+      local stream=main
       local recordings=($(
-         api /api/cameras/$uuid/$streams/recordings \
+         api /api/cameras/$uuid/$stream/recordings \
          | jq -c '.recordings[] | [.startId, .growing, .startTime90k]' \
          | grep -v ,true, \
          | jq -r .[0] \
          | sort -n #-r
       ))
-      for recording_idx in $(seq 1 ${#recordings[@]}); do
-         local recording=${recordings[recording_idx-1]}
+      for recording in "${recordings[@]}"; do
          if grep "^$uuid.$recording$" /tmp/movement_detection_via_api_ffmpeg.sh.txt; then
             continue
          fi
 
          local ts="$(_date -u -d @"$(
-            api "/api/cameras/$uuid/$streams/view.mp4.txt?s=$recording&ts=true" \
+            api "/api/cameras/$uuid/$stream/view.mp4.txt?s=$recording&ts=true" \
             | grep -A 1 last_modified: \
             | head -n 2 \
             | tail -n 1 \
@@ -34,53 +33,43 @@ main() {
             continue
          fi
 
-         echo uuid=$uuid stream=$streams recording=$recording ts=$ts
-         api "/api/cameras/$uuid/$streams/view.mp4?s=$recording&ts=true" > /tmp/movement_detection_via_api_ffmpeg.sh.mp4
+         echo uuid=$uuid stream=$stream recording=$recording ts=$ts
+         api "/api/cameras/$uuid/$stream/view.mp4?s=$recording&ts=true" > /tmp/movement_detection_via_api_ffmpeg.sh.mp4
 
-         local has_change=false
-         local cksum="$(cksum /tmp/movement_detection_via_api_ffmpeg.sh.mp4)"
-         if grep "^$cksum$" /tmp/movement_detection_via_api_ffmpeg.sh.txt; then
-            has_change=true
-         fi
+         local fps=$(ffprobe -i /tmp/movement_detection_via_api_ffmpeg.sh.mp4 2>&1 | grep -o '[0-9]*\.*[0-9]* fps' | head -n 1 | awk '{print $1}')
+         local inspection="$(ffmpeg -i /tmp/movement_detection_via_api_ffmpeg.sh.mp4 -vf 'select=not(mod(n\,'${fps%.*}')),select=gte(scene\,0),metadata=print:file=-' -an -f null - 2> /dev/null | paste - -)"
+         local scores=($(echo "$inspection" | awk '{print $NF}' | sed 's/.*=//'))
 
-         if ! $has_change; then
-            local fps=$(ffprobe -i /tmp/movement_detection_via_api_ffmpeg.sh.mp4 2>&1 | grep -o '[0-9]*\.*[0-9]* fps' | head -n 1 | awk '{print $1}')
-            local inspection="$(ffmpeg -i /tmp/movement_detection_via_api_ffmpeg.sh.mp4 -vf 'select=not(mod(n\,'${fps%.*}')),select=gte(scene\,0),metadata=print:file=-' -an -f null - 2> /dev/null | paste - -)"
-            local scores=($(echo "$inspection" | awk '{print $NF}' | sed 's/.*=//'))
+         local flattened_scores=()
+         for i in $(seq 1 ${#scores[@]}); do
+            flattened_scores+=($(echo ${scores[@]:i-2:3} | tr ' ' '\n' | sort -n | head -n 2 | tail -n 1))
+         done
 
-            local flattened_scores=()
-            for i in $(seq 1 ${#scores[@]}); do
-               flattened_scores+=($(echo ${scores[@]:i-2:3} | tr ' ' '\n' | sort -n | head -n 2 | tail -n 1))
-            done
-
-            local threshold=1
-            local last_n=(${flattened_scores[@]:0:7})
-            for i in $(seq 1 ${#flattened_scores[@]}); do
-               last_n[$(( (i-1)%7 ))]=${flattened_scores[$((i-1))]}
-               max_of_last_n=$(echo "${last_n[@]}" | tr ' ' '\n' | sort | tail -n 1)
-               if [[ "$max_of_last_n" < "$threshold" ]]; then
-                  threshold="$max_of_last_n"
-               fi
-            done
-            threshold="$(echo "$threshold + 0.01" | bc)"
-
-            local max_flattened_score=$(echo "${flattened_scores[@]:5:${#flattened_scores[@]}-10}" | tr ' ' '\n' | sort -n | tail -n 1)
-            if [[ "${max_flattened_score#*.}" > "${threshold#*.}" ]]; then
-               has_change=true
+         local threshold=1
+         local last_n=(${flattened_scores[@]:0:7})
+         for i in $(seq 1 ${#flattened_scores[@]}); do
+            last_n[$(( (i-1)%7 ))]=${flattened_scores[$((i-1))]}
+            max_of_last_n=$(echo "${last_n[@]}" | tr ' ' '\n' | sort | tail -n 1)
+            if [[ "$max_of_last_n" < "$threshold" ]]; then
+               threshold="$max_of_last_n"
             fi
+         done
+         threshold="$(echo "$threshold + 0.01" | bc)"
+
+         local max_flattened_score=$(echo "${flattened_scores[@]:5:${#flattened_scores[@]}-10}" | tr ' ' '\n' | sort -n | tail -n 1)
+         local has_change=false
+         if [[ "${max_flattened_score#*.}" > "${threshold#*.}" ]]; then
+            has_change=true
          fi
 
          if $has_change; then
             echo "$uuid.$recording" >> /tmp/movement_detection_via_api_ffmpeg.sh.txt
-            echo "$cksum" >> /tmp/movement_detection_via_api_ffmpeg.sh.txt
          else
             echo no movement in "$recording"
-            for stream in ${streams[@]}; do
-               api "/api/cameras/$uuid/$stream/view.mp4" \
-                  -X DELETE \
-                  -H 'Content-Type: application/json' \
-                  -d "$(printf '{"runStartId": %s}' "$recording")"
-            done
+            api "/api/cameras/$uuid/$stream/view.mp4" \
+               -X DELETE \
+               -H 'Content-Type: application/json' \
+               -d "$(printf '{"runStartId": %s}' "$recording")"
          fi
       done
       break