IMAGE_TO_TIMELAPSE.md

Commands to create timelapse from image file

Pre-requisites:

1. File list preparation

   # Make sure to change to the directory
   # where your image files are located
   ls -1v *.jpg > input.txt
   awk '{print "file '\''" $0 "'\''"}' input.txt > files.txt
   ffmpeg -f concat -safe 0 -r 30 -i files.txt -c:v libx264 -pix_fmt yuv420p timelapse.mp4

To create an .mp4 file from the files.txt with minimum of 1920x1080 resolution

ffmpeg -f concat -safe 0 -r 30 -i files.txt \
-vf "scale='min(1920,iw)':'min(1080,ih)':force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" \
-c:v libx264 -pix_fmt yuv420p milkyway1_1080p.mp4

For high bitrate

ffmpeg -f concat -safe 0 -r 30 -i files.txt \
-vf "scale='min(1920,iw)':'min(1080,ih)':force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" \
-c:v libx264 -crf 18 -preset slow -pix_fmt yuv420p milkyway1_1080p_high.mp4