Ziggle Wump Media Compressor 0.2-beta.09.01.2024

#!/data/data/com.termux/files/usr/bin/bash

# ATTENTION:

# Copying and pasting the script can introduce formatting that is improper to bash.  If the script doesn't run, you may need to use the dos2unix command to fix it.

# ex.  dos2unix ziggle_wump.sh

# --------------------
#     Licence
# --------------------

# This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

# You should have received a copy of the GNU General Public License along with  this program. If not, see <https://www.gnu.org/licenses/>.

# -----------------
#     About
# -----------------

# This script is for Termux on Android and is not associated with the apps it uses.

# Copyright Joshua Hansen and contributors: Microsoft Co-Pilot and ChatGPT.

# Shout out to Webernets https://youtu.be/0aeCfDKLfbs?si=58y58eWSiXurcHpj who gave me the inspiration for this, the one who did the heavy lifting figuring out the command line options. And this video helping me figure out how to do it in Handbrake, but I needed it all in a one-line command line option and this was it, I had to write it myself.

# -----------------------
#   Instructions
# -----------------------

# Usage: ./ziggle_wump.sh [-r resolution] [-f "ffmpeg_options"] [-h|--help]
#   -r resolution        Custom resolution height preserving aspect ratio, Downscaling your videos will significantly reduce the file size, but may introduce artifacts and shimmering.  Upscaling will produce larger file sizes and not increase quality.
#   -f "ffmpeg_options" Override default FFmpeg options with custom command line options.  ex. bash ./ziggle_wump.sh -f "-c:v libx264 -c:a libmp3lame"
#   -h, --help           Display this help message

# 1. Download or Copy this script to a file, and rename it if you want.  e.g., ziggle_wump.sh.  Putting it in your Movies folder will make it easy to find on both Android and Termux, although it's possible to put this in your /usr/bin to use it as a system app.  Your mileage may vary.
# 2. Make it executable: chmod +x ziggle_wump.sh
# 3. Run the script: bash ./ziggle_wump.sh [options]

# -------------------
#    README
# -------------------

# Ziggle Wump: The Simple FFmpeg Command Line Companion Script for Termux on Android

# DISCLAIMER:  THE SCRIPT DOES NOT ALLOW YOU TO CONVERT ENCRYPTED FILES, COPYRIGHTED CONTENT IS GENERALLY ENCRYPTED. THE SCRIPT IN ITSELF DOES NOT VIOLATE COPYRIGHT BUT THE USER MIGHT.  CODE TO PREVENT CIRCUMVENTION IS BEYOND MY CAPABILITY.  NOR SHOULD IT BE MY RESPONSIBILITY, IT'S THE COPYRIGHT HOLDERS RESPONSIBILITY TO ENCRYPT THEIR MEDIA.  IT IS NOT RECOMMENDED TO USE THE SCRIPT TO VIOLATE COPYRIGHT LAW.  US COPYRIGHT LAW ALLOWS FOR SPACESHIFTING, AND FAIR USE OF COPYRIGHTED MATERIAL

# NOTE:  Some phones have a battery saving feature such as the Galaxy S24, that can impact the encoding process and leave you with partially encoded files.  Please make sure Termux is in focus otherwise, either full screen or split screen if you want to do other things, and keep the screen on while encoding.

# Check out https://dontkillmyapp.com/ for more information and perhaps find a fix for your particular phone.

# Supported File Types:
# Video:  mp4 mkv avi mov flv wmv webm mts
# Audio: mp3 wav flac aac ogg m4a

# -----------------------------
#             Title
# -----------------------------

# Ziggle Wump Media Compressor 0.2-beta

# The Simple FFmpeg Command Line Companion Script for Termux on Android

# -----------------------------
#        Variables
# -----------------------------

# Full Log file path
log_file="$HOME/storage/shared/Movies/VideoDrop/convert.log"

# Shortened log file path for terminal output
log_file_echo=$(echo "$log_file" | sed 's|/data/data/com.termux/files/home|.../home|g')

# Default resolution (empty implies original resolution)
default_resolution=""

# Full directory paths
video_drop_dir="$HOME/storage/shared/Movies/VideoDrop"
video_processing_dir="$HOME/storage/shared/Movies/VideoProcessing"
output_dir_base="$HOME/storage/shared/Movies/VideoConverted"

# Shortened directory paths for terminal output
video_drop_dir_echo=$(echo "$video_drop_dir" | sed 's|/data/data/com.termux/files/home|.../home|g')
video_processing_dir_echo=$(echo "$video_processing_dir" | sed 's|/data/data/com.termux/files/home|.../home|g')
output_dir_base_echo=$(echo "$output_dir_base" | sed 's|/data/data/com.termux/files/home|.../home|g')

# Initialize optional variables
resolution="$default_resolution"
ffmpeg_custom_options=""

# -----------------------------
#    Command Flags
# -----------------------------

# Function to display help message
show_help() {
    width=$(tput cols)
    echo "Place your media files in $video_drop_dir_echo." | tee -a "$log_file" | fmt -w $width
    echo "Usage: $0 [-r resolution] [-f \"ffmpeg_options\"] [-h|--help]" | fmt -w $width
    echo "  -r resolution ex. bash $0 -r 720               Custom resolution height preserving aspect ratio, Downscaling your videos will significantly reduce the file size, but may introduce artifacts and shimmering.  Upscaling will produce larger file sizes and not increase quality." | fmt -w $width
    echo "  -f \"ffmpeg_options\"  Override default FFmpeg options with custom command line options.  ex. bash $0 -f \""-c:v libx264 -c:a libmp3lame\" | fmt -w $width
    echo "  -h, --help           Display this help message" | fmt -w $width
    exit 0
}

# Parse command-line options
while getopts "r:f:h" opt; do
    case $opt in
        r) resolution="$OPTARG" ;;  # Set custom resolution by height
        f) ffmpeg_custom_options="$OPTARG" ;;  # Set custom FFmpeg options
        h) show_help ;;  # Display help
        *) show_help ;;  # Display help for invalid options
    esac
done

shift $((OPTIND -1))

# ---------------------------------
#       Dependencies
# ---------------------------------

# Ensure dependencies are installed and all packages are up to date.
    echo "Updating, please wait..."
    sleep 1
    pkg update && pkg upgrade -y
    if ! command -v ffmpeg &> /dev/null; then
        pkg install ffmpeg -y
    fi
    if ! command -v ncurses-utils &> /dev/null; then
        pkg install ncurses-utils -y
    fi
echo "Update complete."
    sleep 1

# -----------------------------------------------------
#     Create Directories and log file
# -----------------------------------------------------

# Create necessary directories if they don't exist
mkdir -p "$video_drop_dir" "$video_processing_dir" "$output_dir_base"

# Change to the VideoDrop directory
cd "$video_drop_dir" || { echo "Directory change failed"; exit 1; }

# Check if log file exists
if [ -f "$log_file" ]; then
    echo "Old log file found.  Deleting..."
    rm "$log_file"
    echo "File deleted."
else
    echo "Log File does not exist.  The script will create $log_file_echo"
fi

# ------------------------
#     Start script
# ------------------------

width=$(tput cols)

echo "Running... Press Ctrl+C to stop."
    sleep 1

echo ""
echo "NOTE:  Some phones have a battery saving feature such as the Galaxy S24, that can impact the encoding process and leave you with partially encoded files.  Please make sure Termux is in  focus, either full screen or split screen if you want to do other things, and keep the screen on while encoding." | tee -a "$log_file" | fmt -w $width

echo ""
echo "Check out https://dontkillmyapp.com/ for more information and perhaps find a fix for your particular phone." | tee -a "$log_file" | fmt -w $width

echo ""
# Function to prompt the user to continue or quit
prompt_continue_or_quit() {
    while true; do
# Recursively find and process videos and audio
video_count=$(find "$video_drop_dir" -type f \( -iname '*.mp4' -o -iname '*.mkv' -o -iname '*.avi' -o -iname '*.mov' -o -iname '*.flv' -o -iname '*.wmv' -o -iname '*.webm' -o -iname '*.mts' -o -iname '*.mp3' -o -iname '*.wav' -o -iname '*.flac' -o -iname '*.aac' -o -iname '*.ogg' -o -iname '*.m4a' \) | wc -l)

if [ "$video_count" -eq 0 ]; then
    echo "No videos or audio found. $video_drop_dir_echo folder created. Place your videos and audio here including in folders using your favorite file manager for Android, and then run the script again.  Supported File Types:  Video:  mp4 mkv avi mov flv wmv webm mts Audio: mp3 wav flac aac ogg m4a" | tee -a "$log_file" | fmt -w $width
    exit 0
fi

# Prompt text
prompt_text="Compatible media files detected in $video_drop_dir_echo. You can start encoding now. Do you wish to proceed? (Y/N): "

# Format the prompt text
formatted_prompt=$(echo "$prompt_text" | fmt -w $width)

# Read user input with formatted prompt
read -p "$formatted_prompt" yn
case $yn in
    [Yy]* ) return 0;;  # Continue
    [Nn]* ) echo "Exiting script."; exit 0;;  # Quit
    * ) echo "Please answer Y or N.";;
esac
done
}

    # Prompt the user to continue or quit
    prompt_continue_or_quit

echo "Starting conversion process..." | tee -a "$log_file"
sleep 1

# -----------------------------
#    Audio Encoder
# -----------------------------

width=$(tput cols)

# Function to check the log file for "Killed" message
check_for_killed_message() {
    if grep -q " Killed     " "$log_file"; then
        echo "$(date '+%Y-%m-%d %H:%M:%S') Error: Process was killed. Check log file for details." | tee -a "$log_file"
        return 1
    fi
    return 0
}

# Function to process audio files
process_audio() {
    local audio="$1"
    local audio_echo=$(echo "$audio" | sed 's|/data/data/com.termux/files/home|/home|g')
    local relative_path="${audio#$video_drop_dir/}"
    local dir_path=$(dirname "$relative_path")
    local base_name=$(basename "$relative_path" | tr -cd '[:alnum:]._ -')
    local output_dir="$output_dir_base/$dir_path"
    local output_file="$output_dir/${base_name}_converted.opus"
    local temp_output_file="$output_file.tmp"

    mkdir -p "$output_dir"  # Create output directory

    echo "$(date '+%Y-%m-%d %H:%M:%S') Processing $audio to $output_file" | tee -a "$log_file"

    # Construct the FFmpeg command for audio processing
    local ffmpeg_command="ffmpeg -nostdin -loglevel verbose -y -i \"$audio\" -c:a libopus -f opus \"$temp_output_file\""

    # Execute the FFmpeg command
    eval $ffmpeg_command 2>&1 | tee -a "$log_file"

    # Check for "Killed" message in the log file
    if ! check_for_killed_message; then
        echo "$(date '+%Y-%m-%d %H:%M:%S') Error: Process was killed. Exiting." | tee -a "$log_file"
        exit 1
    fi

    if [ $? -eq 0 ]; then
        mv "$temp_output_file" "$output_file"  # Rename the temporary file to the final output file
        mkdir -p "$video_processing_dir/$dir_path"  # Create processing directory
        mv "$audio" "$video_processing_dir/$relative_path"
        echo ""
        echo "$(date '+%Y-%m-%d %H:%M:%S') Converted $audio_echo. Your original files will be in the $video_processing_dir_echo folder for comparison. Your new files are in $output_dir_base_echo" | tee -a "$log_file" | fmt -w $width
    else
        echo ""
        echo "$(date '+%Y-%m-%d %H:%M:%S') Error processing \"$audio\". Check log file for details." | tee -a "$log_file"
        exit 1
    fi
}

# ------------------------------
#      Video Encoder
# ------------------------------

width=$(tput cols)

# Function to check the log file for "Killed" message
check_for_killed_message() {
    if grep -q " Killed     " "$log_file"; then
        echo "$(date '+%Y-%m-%d %H:%M:%S') Error: Process was killed. Check log file for details." | tee -a "$log_file" | fmt -w $width
        exit 1
    fi
}

# Function to process videos
process_video() {
    local video="$1"
    local video_echo=$(echo "$video" | sed 's|/data/data/com.termux/files/home|.../home|g')
    local relative_path="${video#$video_drop_dir/}"
    local dir_path=$(dirname "$relative_path")
    local base_name=$(basename "$relative_path" | tr -cd '[:alnum:]._ -')
    local output_dir="$output_dir_base/$dir_path"
    local output_file="$output_dir/${base_name}_converted.mkv"
    local temp_output_file="$output_file.tmp"
    local scale_filter=""
    [ -n "$resolution" ] && scale_filter="scale=trunc(oh*a/2)*2:$resolution"

    mkdir -p "$output_dir"  # Create output directory

    echo "$(date '+%Y-%m-%d %H:%M:%S') Processing $video to $output_file" | tee -a "$log_file"
    echo "Resolution set to: $resolution" | tee -a "$log_file"

    # Construct the FFmpeg command to downsample all audio streams to stereo
    local ffmpeg_command
    if [ -n "$ffmpeg_custom_options" ]; then
        ffmpeg_command="ffmpeg -nostdin -loglevel verbose -y -i \"$video\" $ffmpeg_custom_options -f matroska \"$temp_output_file\""
    else
        ffmpeg_command="ffmpeg -nostdin -loglevel verbose -y -i \"$video\" -c:v libx265 -c:a libopus -vf \"$scale_filter,mpdecimate\" -x265-params \"keyint=250:aq-mode=1:psy-rd=0.75:psy-rdoq=4.0:rd=4:rdoq-level=1:rect=0:strong-intra-smoothing=0\" -ac 2 -fps_mode passthrough -f matroska \"$temp_output_file\""
    fi

    echo "FFmpeg command: $ffmpeg_command" | tee -a "$log_file"

    # Execute the FFmpeg command
    eval $ffmpeg_command 2>&1 | tee -a "$log_file"

    # Check for "Killed" message in the log file
    check_for_killed_message

    if [ $? -eq 0 ]; then
        mv "$temp_output_file" "$output_file"  # Rename the temporary file to the final output file
        mkdir -p "$video_processing_dir/$dir_path"  # Create processing directory
        mv "$video" "$video_processing_dir/$relative_path"
        echo ""
        echo "$(date '+%Y-%m-%d %H:%M:%S') Converted $video_echo. Your original files will be in the $video_processing_dir_echo folder for comparison. Your new files are in $output_dir_base_echo" | tee -a "$log_file" | fmt -w $width
    else
        echo ""
        echo "$(date '+%Y-%m-%d %H:%M:%S') Error processing \"$video\". Check log file for details." | tee -a "$log_file"
        exit 1
    fi
}

# --------------------------------------
#    Start Batch Encoding
# --------------------------------------

width=$(tput cols)

# Recursively find and process videos and audio
video_count=$(find "$video_drop_dir" -type f \( -iname '*.mp4' -o -iname '*.mkv' -o -iname '*.avi' -o -iname '*.mov' -o -iname '*.flv' -o -iname '*.wmv' -o -iname '*.webm' -o -iname '*.mts' -o -iname '*.mp3' -o -iname '*.wav' -o -iname '*.flac' -o -iname '*.aac' -o -iname '*.ogg' -o -iname '*.m4a' \) | wc -l)

# Process each audio file found
find "$video_drop_dir" -type f \( -iname '*.mp3' -o -iname '*.wav' -o -iname '*.flac' -o -iname '*.aac' -o -iname '*.ogg' -o -iname '*.m4a' \) | while read -r audio; do

    stop_processing=false

# Function to handle SIGINT (Ctrl+C)
handle_sigint() {
    echo ""
    echo "Caught SIGINT (Ctrl+C). Exiting immediately." | fmt -w $width
    exit 1  # Exit immediately without performing cleanup
}

# Trap SIGINT and call the handle_sigint function
trap handle_sigint SIGINT

    if [ "$stop_processing" = true ]; then
        echo "Stopping processing due to SIGINT."
        exit 1
    fi
    process_audio "$audio" || exit 1
done

# Process each video found
find "$video_drop_dir" -type f \( -iname '*.mp4' -o -iname '*.mkv' -o -iname '*.avi' -o -iname '*.mov' -o -iname '*.flv' -o -iname '*.wmv' -o -iname '*.webm'  -o -iname '*.mts' \) | while read -r video; do

    stop_processing=false

# Function to handle SIGINT (Ctrl+C)
handle_sigint() {
    echo ""
    echo "Caught SIGINT (Ctrl+C). Exiting immediately." | fmt -w $width
    exit 1  # Exit immediately without performing cleanup
}

# Trap SIGINT and call the handle_sigint function
trap handle_sigint SIGINT

    if [ "$stop_processing" = true ]; then
        echo "Stopping processing due to SIGINT."
        exit 1
    fi
    process_video "$video" || exit 1
done

# -----------------------------
#     Finishing Up
# -----------------------------

width=$(tput cols)

# Check for empty directories and remove them, except for the VideoDrop folder itself

# Set a maximum number of iterations to prevent hanging, this will remove up to 10 levels of subdirectories
max_iterations=10
iteration=0

while find "$video_drop_dir" -depth -type d -empty -not -path "$video_drop_dir" -exec rmdir "{}" \; > /dev/null 2>&1; do
    iteration=$((iteration + 1))
    if [ "$iteration" -ge "$max_iterations" ]; then
        break
    fi
    : # No-op, just repeat the loop
done

# final output message
echo ""
echo "Log file is in $video_drop_dir_echo.  There may be unprocessed media files or other incompatible files.  Some files may need to be remuxed for compatibility." | tee -a "$log_file" | fmt -w $width
exit 0