This script renames sequential time (epoch time) timestamped images to a format that avconv can read and use to create a video file.

rename_sequential_time_images.bash

#!/bin/bash
#This script renames images named as a sequential timestamp to a standardized format used for avconv 

a=0
ls vision_data/*.jpg | sed 's/^\([^0-9]*\)\([0-9]*\)/\1 \2/' | sort -k2,2n | tr -d ' ' |
while read filename; do
  echo $filename
  new=$(printf "%04d.JPG" ${a}) #04 pad to length of 4
  ln ${filename} ${new}
  echo ${i}
  let a=a+1
done