138 lines
4.7 KiB
Bash
Executable File
138 lines
4.7 KiB
Bash
Executable File
#!/bin/bash
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# Function to convert timestamp to seconds, including milliseconds
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timestamp_to_seconds() {
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IFS=':' read -r hours minutes seconds <<< "$1"
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IFS='.' read -r seconds milliseconds <<< "$seconds"
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total_seconds=$(bc <<< "$hours * 3600 + $minutes * 60 + $seconds")
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total_milliseconds=$(bc <<< "$milliseconds / 1000")
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echo "$total_seconds + $total_milliseconds" | bc
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}
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# Function to convert seconds back to HH:MM:SS.mmm format for mkvmerge
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seconds_to_hms() {
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total_seconds="$1"
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# Separate whole seconds and milliseconds
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seconds=$(echo "$total_seconds" | cut -d'.' -f1)
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milliseconds=$(echo "$total_seconds" | cut -d'.' -f2 | sed 's/^[0-9]\{1,3\}$/&000/') # Add trailing zeros if necessary
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# Ensure milliseconds have 3 digits
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milliseconds=$(echo "$milliseconds" | cut -c1-3)
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# Convert seconds to HH:MM:SS format
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hours=$(bc <<< "$seconds / 3600")
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minutes=$(bc <<< "($seconds % 3600) / 60")
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seconds=$(bc <<< "$seconds % 60")
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# Print in HH:MM:SS.mmm format
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printf "%02d:%02d:%02d.%03d" "$hours" "$minutes" "$seconds" "$milliseconds"
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}
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# Function to split the video using mkvmerge
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split_video() {
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input_file="$1"
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start_time="$2"
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end_time="$3"
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output_file="$4"
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start_hms=$(seconds_to_hms "$start_time")
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end_hms=$(seconds_to_hms "$end_time")
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# Print the mkvmerge command before running it
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echo "Running command: mkvmerge -o \"$output_file\" --split parts:\"$start_hms\"-\"$end_hms\" \"$input_file\""
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# Execute the command
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mkvmerge -o "$output_file" --split parts:"$start_hms"-"$end_hms" "$input_file"
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}
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# Function to get video duration
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get_duration() {
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input_file="$1"
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duration=$(ffprobe -v quiet -print_format json -show_format "$input_file" | jq -r '.format.duration')
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echo "$duration"
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}
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# Function to extract chapter start and end times from the input file
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get_chapters() {
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input_file="$1"
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chapters=()
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# Extract the chapters using mkvinfo, then parse the start and end times
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while IFS= read -r line; do
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if [[ "$line" =~ "start" ]]; then
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start_time=$(echo "$line" | awk '{print $2}')
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chapters+=("$start_time")
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fi
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done < <(mkvinfo "$input_file" | grep "Chapter")
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echo "${chapters[@]}"
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}
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# Main function
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main() {
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only_between=false
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if [ "$1" == "--only_between" ]; then
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only_between=true
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shift
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fi
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if [ "$#" -lt 3 ]; then
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echo "Usage: $0 [--only_between] <input_file> <timestamp1> <timestamp2> ..."
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exit 1
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fi
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input_file="$1"
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shift
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timestamps=($@)
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output_folder="split_output"
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mkdir -p "$output_folder"
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echo "Splitting video from provided timestamps..."
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# Handle chapter timecodes if present
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if [[ "${timestamps[0]}" == "chapters" ]]; then
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# Extract chapter start times
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chapter_times=($(get_chapters "$input_file"))
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echo "Extracting chapters from the input file..."
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for ((i = 0; i < ${#chapter_times[@]} - 1; i++)); do
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start_time="${chapter_times[$i]}"
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end_time="${chapter_times[$i+1]}"
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output_filename="$output_folder/chapter_$((i+1)).mkv"
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echo "Splitting from Chapter $((i+1)) time $start_time to Chapter $((i+2)) time $end_time..."
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split_video "$input_file" "$start_time" "$end_time" "$output_filename"
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done
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elif $only_between; then
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echo "Extracting only specified segments..."
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for ((i = 0; i < ${#timestamps[@]} - 1; i++)); do
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start_time=$(timestamp_to_seconds "${timestamps[$i]}")
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end_time=$(timestamp_to_seconds "${timestamps[$i+1]}")
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output_filename="$output_folder/part_$((i+1)).mkv"
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echo "Splitting from ${timestamps[$i]} to ${timestamps[$i+1]}..."
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split_video "$input_file" "$start_time" "$end_time" "$output_filename"
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done
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else
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echo "Extracting all segments..."
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start_time=0
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output_index=1
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for timestamp in "${timestamps[@]}"; do
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end_time=$(timestamp_to_seconds "$timestamp")
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output_filename="$output_folder/part_${output_index}.mkv"
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echo "Splitting from $start_time to $timestamp..."
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split_video "$input_file" "$start_time" "$end_time" "$output_filename"
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start_time=$end_time
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((output_index++))
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done
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duration=$(get_duration "$input_file")
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output_filename="$output_folder/part_${output_index}.mkv"
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echo "Splitting from $start_time to $duration..."
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split_video "$input_file" "$start_time" "$duration" "$output_filename"
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fi
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echo "Splitting complete. Files saved in $output_folder."
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}
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main "$@"
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