fix(step9): split denoise+silenceremove into 2 passes — anlmdn chained filter crashes ffmpeg 6.1.1

.github/workflows/render-testimonial.yml

@@ -97,9 +97,9 @@ jobs:
                 :stop_periods=-1:stop_silence=0.05:stop_threshold=-35dB[clean]" \
             -map "[0:v]" -map "[clean]" \
             -c:v copy -c:a aac -b:a 128k \
-            assets/denoised.mp4
+            assets/jumpcut.mp4
           DUR=$(ffprobe -v quiet -show_entries format=duration \
-            -of default=noprint_wrappers=1:nokey=1 assets/denoised.mp4 | xargs printf "%.1f")
+            -of default=noprint_wrappers=1:nokey=1 assets/jumpcut.mp4 | xargs printf "%.1f")
           echo "FOOTAGE_DUR=$DUR" >> $GITHUB_ENV
           echo "After denoise+jumpcut: ${DUR}s"
 
@@ -109,7 +109,7 @@ jobs:
         run: |
           mkdir -p project/assets
           python3 scripts/gen_captions.py \
-            --input assets/denoised.mp4 \
+            --input assets/jumpcut.mp4 \
             --srt-out assets/captions.srt
           echo "SRT preview:"; head -20 assets/captions.srt || true
 
@@ -120,7 +120,7 @@ jobs:
           [ -z "$FONT_PATH" ] && FONT_PATH="/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf"
           echo "Using font: $FONT_PATH"
 
-          ffmpeg -y -i assets/denoised.mp4 \
+          ffmpeg -y -i assets/jumpcut.mp4 \
             -vf "subtitles=assets/captions.srt:force_style='FontName=Liberation Sans,FontSize=22,PrimaryColour=&H001a2744,OutlineColour=&H00FFFFFF,Outline=10,Shadow=0,Alignment=2,MarginV=120,Bold=1'" \
             -c:v libx264 -preset fast -crf 22 \
             -c:a copy \