#!/bin/bash
#
# Rolf Niepraschk <Rolf.Niepraschk@ptb.de>, 2016-12-12
#
# Erzeugt aus allen Messgeräte-Bilder eine Videodatei (Codec X264)
#

MAIN="FLUKE-8840A" # device name
IMAGE_DIR=./images

cat $(find "$IMAGE_DIR" -maxdepth 1 -type f -name "*.png") | \
  ffmpeg -y -framerate .5 -i - -c:v libx264 -r 25 -pix_fmt yuv420p \
  "$MAIN.mp4" 2>/dev/null
  
exit

MJEPEG-Video:

ffmpeg -y -framerate 1 -f image2 -pattern_type glob -i 'images/*.png' \
  -c:v mjpeg -qscale 1 -r 25 ABC.avi