Concatenate videos with ffmpeg

concat_script.sh

#!/bin/bash

# Ensure a list of clips is provided
if [ $# -eq 0 ]; then
    echo "Please provide a list of clips to process and concatenate."
    exit 1
fi

# Directory to store processed clips
mkdir -p processed_clips

# Process each clip
for clip in "$@"; do
    # Get the base name of the clip
    basename=$(basename "$clip")
    
    # Create a name for the processed clip
    processed_clip="processed_clips/$basename"

    # Scale, set aspect ratio, and set frame rate
    ffmpeg -i "$clip" -vf "scale=1920:1080,setsar=1,setdar=16/9,fps=30" "$processed_clip"
done

# Create a file list
echo "" > files.txt
for clip in processed_clips/*.mp4; do
    echo "file '$clip'" >> files.txt
done

# Concatenate all processed clips
ffmpeg -f concat -safe 0 -i files.txt output.mp4

# Cleanup
rm -rf processed_clips
rm files.txt

echo "All clips processed and concatenated into output.mp4"