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September 6, 2021 20:30
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Quick Shell Script to run my edge detection algorithm on a given video file
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# use with https://github.com/Wuelle/Sobel-operator | |
# Create tmp directories | |
mkdir _tmp | |
mkdir _tmp/img | |
mkdir _tmp/processed | |
# Extract audio and source images from the input file | |
ffmpeg -nostdin -i input.mp4 _tmp/img/%06d.png | |
ffmpeg -nostdin -i input.mp4 _tmp/audio.mp3 | |
# Apply the edge detection | |
NUM_IMG=$(ls _tmp/img/ | wc -l) | |
CURR_IMG=0 | |
for filename in _tmp/img/*; do | |
BASE=$(basename $filename) | |
echo "[${CURR_IMG}/${NUM_IMG}]: $BASE" | |
python3 edge_detection.py ${filename} "_tmp/processed/$BASE" | |
CURR_IMG=$((CURR_IMG+1)) | |
done | |
# Concatenate images into (silent) video | |
ffmpeg -nostdin -i _tmp/processed/%06d.png _tmp/silent.mp4 | |
# Add the audio back in | |
ffmpeg -nostdin -i _tmp/silent.mp4 -i _tmp/audio.mp3 output.mp4 | |
# Cleanup | |
rm -rf _tmp |
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