70 lines
1.9 KiB
Text
70 lines
1.9 KiB
Text
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#!/bin/sh
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# Give a file with images and timecodes and creates a video slideshow of them.
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#
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# Timecodes must be in format 00:00:00.
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#
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# Imagemagick and ffmpeg required.
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# TODO:
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# - add the ability to include text, using imagemagick text to image feature.
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[ -z "$1" ] && echo "Usage:
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first arg: file with timecodes
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second arg: audio file (optional)" && exit 1
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prepdir="$1-src"
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prepfile="$prepdir/$1.prep"
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outfile="$1.mp4"
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totaldur="$(ffmpeg -i "$2" 2>&1 | awk '/Duration/ {print $2}' | sed s/,//)"
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totseconds="$(date '+%s' -d "$totaldur")"
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mkdir -p "$prepdir"
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echo "Preparing images... May take a while depending on the number of files."
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{
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while read -r x;
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do
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# Get the time from the first column.
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time="${x%% *}"
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seconds="$(date '+%s' -d "$time")"
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# Duration is not used on the first looped item.
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duration="$((seconds - prevseconds))"
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# Get the filename from the rest.
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filename="${x#* }"
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base="$(basename "$filename")"
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base="${base%.*}.jpg"
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# Resize and read the image file, but not if already done.
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[ ! -f "$prepdir/$base" ] &&
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convert -size 1920x1080 canvas:black -gravity center "$filename" -resize 1920x1080 -composite "$prepdir/$base"
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# If the first line, do not write yet.
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[ "$time" = "00:00:00" ] || echo "file '$prevbase'
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duration $duration"
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# Keep the information required for the next file.
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prevbase="$base"
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prevtime="$time"
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prevseconds="$(date '+%s' -d "$prevtime")"
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done < "$1"
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# Do last file which must be given twice as follows
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echo "file '$base'
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duration $((totseconds-seconds))
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file '$base'"
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} > "$prepfile"
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if [ -f "$2" ]; then
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ffmpeg -y -f concat -safe 0 -i "$prepfile" -i "$2" -c:a aac -vsync vfr -c:v libx264 -pix_fmt yuv420p "$outfile"
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else
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ffmpeg -y -f concat -safe 0 -i "$prepfile" -vsync vfr -c:v libx264 -pix_fmt yuv420p "$outfile"
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fi
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# Might also try:
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# -vf "fps=${fps:-24},format=yuv420p" "$outfile"
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# but has given some problems.
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