slider (4188B)
1 #!/bin/sh 2 3 # Give a file with images and timecodes and creates a video slideshow of them. 4 # 5 # Timecodes must be in format 00:00:00. 6 # 7 # Imagemagick and ffmpeg required. 8 9 # Application cache if not stated elsewhere. 10 cache="${XDG_CACHE_HOME:-$HOME/.cache}/slider" 11 12 while getopts "hvrpi:c:a:o:d:f:t:e:x:s:" o; do case "${o}" in 13 c) bgc="$OPTARG" ;; 14 t) fgc="$OPTARG" ;; 15 f) font="$OPTARG" ;; 16 i) file="$OPTARG" ;; 17 a) audio="$OPTARG" ;; 18 o) outfile="$OPTARG" ;; 19 d) prepdir="$OPTARG" ;; 20 r) redo="$OPTARG" ;; 21 s) ppt="$OPTARG" ;; 22 e) endtime="$OPTARG" ;; 23 x) res="$OPTARG" 24 echo "$res" | grep -qv "^[0-9]\+x[0-9]\+$" && 25 echo "Resolution must be dimensions separated by a 'x': 1280x720, etc." && 26 exit 1 ;; 27 p) echo "Purge old build files in $cache? [y/N]" 28 read -r confirm 29 echo "$confirm" | grep -iq "^y$" && rm -rf "$cache" && echo "Done." 30 exit ;; 31 v) verbose=True ;; 32 *) echo "$(basename "$0") usage: 33 -i input timecode list (required) 34 -a audio file 35 -c color of background (use html names, black is default) 36 -t text color for text slides (white is default) 37 -s text font size for text slides (150 is default) 38 -f text font for text slides (sans serif is default) 39 -o output video file 40 -e if no audio given, the time in seconds that the last slide will be shown (5 is default) 41 -x resolution (1920x1080 is default) 42 -d tmp directory 43 -r rerun imagemagick commands even if done previously (in case files or background has changed) 44 -p purge old build files instead of running 45 -v be verbose" && exit 1 46 47 esac done 48 49 # Check that the input file looks like it should. 50 { head -n 1 "$file" 2>/dev/null | grep -q "^00:00:00 " ;} || { 51 echo "Give an input file with -i." && 52 echo "The file should look as this example: 53 54 00:00:00 first_image.jpg 55 00:00:03 otherdirectory/next_image.jpg 56 00:00:09 this_image_starts_at_9_seconds.jpg 57 etc... 58 59 Timecodes and filenames must be separated by Tabs." && 60 exit 1 61 } 62 63 if [ -n "${audio+x}" ]; then 64 # Check that the audio file looks like an actual audio file. 65 case "$(file --dereference --brief --mime-type -- "$audio")" in 66 audio/*) ;; 67 *) echo "That doesn't look like an audio file."; exit 1 ;; 68 esac 69 totseconds="$(date '+%s' -d $(ffmpeg -i "$audio" 2>&1 | awk '/Duration/ {print $2}' | sed s/,//))" 70 fi 71 72 prepdir="${prepdir:-$cache/$file}" 73 outfile="${outfile:-$file.mp4}" 74 prepfile="$prepdir/$file.prep" 75 76 [ -n "${verbose+x}" ] && echo "Preparing images... May take a while depending on the number of files." 77 mkdir -p "$prepdir" 78 79 { 80 while read -r x; 81 do 82 # Get the time from the first column. 83 time="${x%% *}" 84 seconds="$(date '+%s' -d "$time")" 85 # Duration is not used on the first looped item. 86 duration="$((seconds - prevseconds))" 87 88 # Get the filename/text content from the rest. 89 content="${x#* }" 90 base="$(basename "$content")" 91 base="${base%.*}.jpg" 92 93 if [ -f "$content" ]; then 94 # If images have already been made in a previous run, do not recreate 95 # them unless -r was given. 96 { [ ! -f "$prepdir/$base" ] || [ -n "${redo+x}" ] ;} && 97 magick -size "${res:-1920x1080}" canvas:"${bgc:-black}" -gravity center "$content" -resize 1920x1080 -composite "$prepdir/$base" 98 else 99 { [ ! -f "$prepdir/$base" ] || [ -n "${redo+x}" ] ;} && 100 magick -size "${res:-1920x1080}" -background "${bgc:-black}" -fill "${fgc:-white}" -font "${font:-Sans}" -pointsize "${ppt:-150}" -gravity center label:"$content" "$prepdir/$base" 101 fi 102 103 # If the first line, do not write yet. 104 [ "$time" = "00:00:00" ] || echo "file '$prevbase' 105 duration $duration" 106 107 # Keep the information required for the next file. 108 prevbase="$base" 109 prevtime="$time" 110 prevseconds="$(date '+%s' -d "$prevtime")" 111 done < "$file" 112 # Do last file which must be given twice as follows 113 endtime="$((totseconds-seconds))" 114 echo "file '$base' 115 duration ${endtime:-5} 116 file '$base'" 117 } > "$prepfile" 118 if [ -n "${audio+x}" ]; then 119 ffmpeg -hide_banner -y -f concat -safe 0 -i "$prepfile" -i "$audio" -c:a aac -vsync vfr -c:v libx264 -pix_fmt yuv420p "$outfile" 120 else 121 ffmpeg -hide_banner -y -f concat -safe 0 -i "$prepfile" -vsync vfr -c:v libx264 -pix_fmt yuv420p "$outfile" 122 fi 123 124 # Might also try: 125 # -vf "fps=${fps:-24},format=yuv420p" "$outfile" 126 # but has given some problems.