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#!/bin/bash
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set -x
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# Get yesterday's date
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yesterday=$(date --date="yesterday" +%Y-%m-%d)
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current_year=$(date +%Y)
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day_of_year=$(date --date="$yesterday" +%j) # Day of the year (1 to 366)
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# Define base directory and music directory
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base_dir="/home/motion/drives/local-2tb"
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music_base_dir="/home/motion/drives/local-2tb/music/4 Seasons"
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# Determine the season based on the day of the year
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if [ "$day_of_year" -ge 80 ] && [ "$day_of_year" -le 172 ]; then
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season="Spring"
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season_start_date=80
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season_end_date=172
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days_in_season=92
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elif [ "$day_of_year" -ge 173 ] && [ "$day_of_year" -le 264 ]; then
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season="Summer"
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season_start_date=173
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season_end_date=264
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days_in_season=92
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elif [ "$day_of_year" -ge 265 ] && [ "$day_of_year" -le 355 ]; then
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season="Autumn"
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season_start_date=265
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season_end_date=355
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days_in_season=91
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else
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season="Winter"
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season_start_date=356
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season_end_date=79
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days_in_season=90
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fi
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# Calculate the day of the season (from 1 to days_in_season)
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if [ "$season" == "Winter" ]; then
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if [ "$day_of_year" -ge 355 ]; then
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# Winter season starts at day 1 on Dec 21st
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day_of_season=$(($day_of_year - 354)) # Day 1 of Winter starts on Dec 21st
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else
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# Before Dec 21st, Winter starts on Dec 21st in the previous year
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day_of_season=$((365 - 354 + $day_of_year)) # Adjust for the 365th day (Dec 20th) in the previous year
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fi
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else
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day_of_season=$(($day_of_year - $season_start_date + 1))
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fi
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# Determine the movement based on the day of the season
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if [ "$season" == "Winter" ]; then
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# Winter typically has three movements, so we calculate the movement number
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if [ "$day_of_season" -le 30 ]; then
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movement_num=1
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elif [ "$day_of_season" -le 60 ]; then
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movement_num=2
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else
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movement_num=3
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fi
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else
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# Other seasons follow the same calculation for movement
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if [ "$day_of_season" -le 30 ]; then
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movement_num=1
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elif [ "$day_of_season" -le 60 ]; then
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movement_num=2
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else
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movement_num=3
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fi
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fi
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# Determine the music file based on the season and movement
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music_file=$(find "$music_base_dir" -type f -iname "*$season Mvt $movement_num*" | head -n 1)
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# Check if the music file exists
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if [ ! -f "$music_file" ]; then
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echo "Music file for $season, Movement $movement_num not found!"
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exit 1
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fi
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# Get the duration of the music file in seconds
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music_duration=$(ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$music_file")
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echo "Music duration: $music_duration seconds" # Printing the music duration for verification
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# Define the directory where images are stored (using yesterday's date)
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first_word_of_script_folder=$(basename "$(dirname "$(realpath "$0")")" | cut -d'-' -f1)
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image_dir="$base_dir/$first_word_of_script_folder/$yesterday"
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# Check if the image directory exists
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if [ ! -d "$image_dir" ]; then
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echo "Error: Image directory $image_dir not found for $yesterday!"
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echo "Skipping this day's video generation."
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# Log the missing day
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echo "No images for $yesterday" >> /path/to/missing_days.log
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# Skip to the next day
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exit 0
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fi
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# Get today's date in yyyy-mm format for output directory
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output_date=$(date +"%Y-%m") # yyyy-mm format
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# Dynamically generate the output directory based on season and movement
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output_dir="$base_dir/movies/$first_word_of_script_folder/$season/Mvt$movement_num"
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mkdir -p "$output_dir"
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# Count the total number of images (JPEG files)
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total_images=$(find "$image_dir" -type f -name "*.jpg" | wc -l)
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# If there are no images, log it and move to the next day
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if [ "$total_images" -lt 1 ]; then
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echo "Error: No images found in $image_dir for $yesterday."
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echo "Skipping this day's video generation."
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# Log the missing day
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echo "No images for $yesterday" >> /path/to/missing_days.log
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# Skip to the next day
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exit 0
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fi
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# Create a temporary text file with the sorted list of image paths
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temp_file=$(mktemp)
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find "$image_dir" -type f -name "*.jpg" | sort -n | while read image; do
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echo "file '$image'" >> "$temp_file"
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done
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# Calculate the number of images
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num_images=$(wc -l < "$temp_file")
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echo "Total images found for the video: $num_images"
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# Calculate the target total duration (music duration + 3 seconds for transitions)
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target_total_duration=$(echo "$music_duration + 3" | bc)
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echo "Target total video duration (music + 3 seconds): $target_total_duration seconds"
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# Calculate the target duration per video (based on number of days in the season)
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target_duration_per_video=$(echo "$target_total_duration / $days_in_season" | bc -l)
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echo "Each day's target video length: $target_duration_per_video seconds"
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# Check if the daily video length is too short (less than 1.67 seconds)
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if (( $(echo "$target_duration_per_video < 1.67" | bc -l) )); then
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echo "Daily video length is less than 1.67 seconds. Doubling the music duration."
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music_duration=$(echo "$music_duration * 2" | bc)
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target_total_duration=$(echo "$music_duration + 3" | bc)
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target_duration_per_video=$(echo "$target_total_duration / $days_in_season" | bc -l)
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echo "New target total video duration (after doubling music): $target_total_duration seconds"
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echo "New target duration per video: $target_duration_per_video seconds"
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fi
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# First, create the video using default frame rate (no speed-up or slow-down yet)
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temp_video="$output_dir/${yesterday}_Mvt${movement_num}-temp.mp4"
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echo "Creating video at default frame rate..."
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ffmpeg -f concat -safe 0 -i "$temp_file" -c:v libx264 -pix_fmt yuv420p -crf 28 -vsync 2 -y "$temp_video"
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# Check the duration of the created video
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video_duration=$(ffmpeg -i "$temp_video" 2>&1 | grep "Duration" | cut -d ' ' -f 4 | sed s/,//)
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echo "Initial video duration: $video_duration"
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# Get the video duration in seconds (from HH:MM:SS format)
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IFS=':' read -r hours minutes seconds <<< $(echo $video_duration | cut -d '.' -f1) # Extract time
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total_seconds=$(($hours * 3600 + $minutes * 60 + $seconds)) # Convert to total seconds
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# Calculate the speed-up factor to make the video fit into the target duration
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speed_up_factor=$(echo "scale=3; $total_seconds / $target_duration_per_video" | bc)
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echo "Calculated speed-up factor: $speed_up_factor"
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# Adjust the playback speed using the setpts filter to make the video fit into the target duration
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final_file_name="${yesterday}_Mvt${movement_num}-Day${day_of_season}of${days_in_season}-final.mp4"
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final_video="$output_dir/$final_file_name"
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ffmpeg -i "$temp_video" -filter:v "setpts=PTS/$speed_up_factor" -y "$final_video"
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# Check the duration of the adjusted video
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adjusted_duration=$(ffmpeg -i "$final_video" 2>&1 | grep "Duration" | cut -d ' ' -f 4 | sed s/,//)
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echo "Adjusted video duration: $adjusted_duration"
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# Check for ffmpeg success
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if [ $? -ne 0 ]; then
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echo "Error: ffmpeg failed to create the final video."
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exit 1
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fi
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# Inform user the video has been created
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echo "Video created at $final_video"
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# Clean up the temporary file
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rm "$temp_file"
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