/ picademy

Planes, Training and Automated File Renaming

Recently at Picademy Birmingham, I set myself a quick challenge. To create a timelapse of the lovely airfield that our training centre overlooked.

So I setup a Raspberry Pi Zero W to take a photograph every 1 minute for three hours.

All the images


These images were originally saved with the time and date they were taken...but in order to use them to create a video I needed to update their file names into a sequence, starting from 1 and ending at 185. Luckilly I found a one line bash script to convert the image file names to sequential numbers.

ls | cat -n | while read n f; do mv "$f" "$n.extension"; done 

Just change extension to match the file type. In this case jpg

Creating the video

So to create the video I used avconv on my Ubuntu laptop to join the images.

avconv -r 10 -start_number 1 -i %d.jpg -b:v 1000k test.mp4

And that was it, the video was created and ready for upload to Youtube.

Complete Code Listing

Here is the code that was written in a BASH script.

today=`date '+%Y_%m_%d__%H_%M_%S'`;
raspistill -o  $filename;
print $filename;