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Compress multiple videos script

Shell
4 mo. ago

A script to compress all videos in a directory using ffmpeg.

ffmpeg
script
compress-multiple-videos-script.sh
_#!/bin/bash


# Default values
vcodec="libx265"
acodec="aac"
abitrate="128k"
output_format="mkv"
crf=28
preset="medium"


# Dynamic video tag variable
if [[ "$vcodec" == "libx265" ]]; then
  video_tag="-tag:v hvc1"
elif [[ "$vcodec" == "libx264" ]]; then
  video_tag="-tag:v avc1"
else
  video_tag=""
fi


# Function to show usage
usage() {
echo "Usage: $0 [options]"
echo "Options:"
echo "  --vcodec [libx264|libx265]   Video codec (default: libx265)"
echo "  --acodec [aac|mp3]           Audio codec (default: aac)"
echo "  --abitrate [128k|192k]       Audio bitrate (default: 128k)"
echo "  --output-format [mp4|mkv]    Output format (default: mkv)"
echo "  --crf [value]                Constant Rate Factor (default: 28)"
echo "  --preset [preset]            Encoding preset (default: medium)"
echo "  --help                       Show this help message"
exit 1
}


# Parse command-line arguments
while [[ $# -gt 0 ]]; do
case "$1" in
    --vcodec)
    vcodec="$2"
    shift 2
    ;;
    --acodec)
    acodec="$2"
    shift 2
    ;;
    --abitrate)
    abitrate="$2"
    shift 2
    ;;
    --output-format)
    output_format="$2"
    shift 2
    ;;
    --crf)
    crf="$2"
    shift 2
    ;;
    --preset)
    preset="$2"
    shift 2
    ;;
    --help)
    usage
    ;;
    *)
    echo "Unknown option: $1"
    usage
    ;;
esac
done


# Create the output directory if it doesn't exist
mkdir -p output


# Process video files
for file in *.{mp4,mov,avi,mkv}; do
# Skip if no files are found
[ ! -e "$file" ] && continue


# Get creation date from metadata
timestamp=$(ffprobe -v quiet -select_streams v:0 -show_entries format_tags=creation_time -of default=noprint_wrappers=1:nokey=1 "$file")


# Format the timestamp to your desired format YYYY-MM-DD-HH-MM-SS
formatted_timestamp=$(date -j -f "%Y-%m-%dT%H:%M:%S" "${timestamp%.*}" "+%Y-%m-%d-%H-%M-%S" 2>/dev/null)


# If the timestamp is empty, use the current time instead
[ -z "$formatted_timestamp" ] && formatted_timestamp=$(date "+%Y-%m-%d-%H-%M-%S")


# Compress the video
ffmpeg -i "$file" -vcodec "$vcodec" -crf "$crf" -preset "$preset" -c:a aac "$acodec" -b:a "$abitrate" "$video_tag" "output/${formatted_timestamp}.${output_format}"
done