Renders mp4 to the demo format used by DB FIA passenger information displays - https://twitter.com/coderobe/status/1724915339513716922

gleis6.sh

#!/bin/bash

# Check if the input argument (MP4 file) is provided
if [ "$#" -ne 1 ]; then
    echo "coderobe's gleis6.sh <3"
    echo "Usage: $0 <inputfile.mp4>"
    exit 1
fi

# Input MP4 file
inputfile=$1

# Directory to store the output frames
outputdir="output_frames"
mkdir -p "$outputdir"

# Extract, convert, resize, and invert color of every 10th frame
ffmpeg -i "$inputfile" -vf "select=not(mod(n\,10)),scale=480:128:force_original_aspect_ratio=decrease,pad=480:128:(ow-iw)/2:(oh-ih)/2:white,format=gray,negate" -vsync vfr -c:v bmp "$outputdir/%04d.bmp"

echo "Frames are saved in $outputdir"

# FFMPEG doesn't use the correct bitmap format
echo -ne "Fixing bmp format"
for f in $outputdir/*.bmp; do convert -monochrome $f BMP3:$f.out; mv $f.out $f; echo -ne "."; done
echo ""

# Output file to write the formatted content
outputfile="$outputdir/CMD.TXT"

# Start writing to the file
echo "[BITMAPS]" > "$outputfile"
counter=1

# List all bitmap files and their corresponding numbers
for frame in "$outputdir"/*.bmp; do
    echo "$(basename "$frame")     $counter" >> "$outputfile"
    let counter++
done

# Write the [LOOP] section
echo "" >> "$outputfile"
echo "[LOOP]" >> "$outputfile"
echo "" >> "$outputfile"
echo "Test96x64:" >> "$outputfile"

# Reset counter for the LOOP section
counter=1

# Write each CREATE line for each frame
for frame in "$outputdir"/*.bmp; do
    echo "CREATE 0 0  480 256 0  0 0  0 0  $counter" >> "$outputfile"
    echo "DELETE 1" >> "$outputfile"
    let counter++
done

echo "" >> "$outputfile"
echo "END" >> "$outputfile"

unix2dos $outputfile

echo "CMD file is saved as $outputfile"

echo "Job's done :*"

telegram-cloud-document-4-5956104682945384631.mp4