#Time lapse using phone

Goal : upcycle an old phone into an IP Webcam and then make time lapse.

Hardware :

• and old phone
• a strong stand for your phone, use clamps and metal sticks
• a WIFI network
• a PC always on (server, raspberry, old laptop)
• free space on the PC hard drive

Requirement :

• a linux like system
• python
• ffmpeg

##Installation of IP Webcam

• get an old phone
• setup Wifi on the phone

Install an IP Webcam software on it

• using Google play : (not tested) add your credential and install IPWebcam from google play

• without : get the APK from : \url{https://apkpure.com/ip-webcam/com.pas.webcam/versions} On my android 6 I had to use IP Webcam_v1.13.25 \url{https://apkpure.com/ip-webcam/com.pas.webcam/download/608-APK?from=versions%2Fversion}

##Using IP Webcam

On Mobile

• Setup the camera settings
• Setup the network settings, notice the capture image URL : \url{http://192.168.?.?:8080/photo.jpg}
• Position the phone and start the server

On the PC

• From your PC open the capture image URL \url{http://192.168.?.?:8080/photo.jpg}
• You should see if it works

##Picture automation

###Using the python script

 $ python capture.py <directory> <delay> <resolution>

current script take 1 picture and save it as last.jpg it also make a copy of this image, convert it to smaller resolution and save it with an timestamp name you can change line resolution = "1280x960"

##Produce the timelapse

 $ bash makevideo.sh -d <directory> -s <rate> -p <prefix> -v <video_dir> -s <size>

 ——————————————————————————————————————————————————————————————————————————————————
 Opt | Variable      | Type  | Definition                           | Default value
 ——————————————————————————————————————————————————————————————————————————————————
 -d    directory       path    Directory path of images to convert    ./pics
 -r    rate            int     Convert only 1/N images                1
 -p    prefix          str     Images filename prefix.                ''
 -v    video_dir       path    Directory path to store video file.    ./videos
 -s    size            str     Images geometry.                       '1024x768'
 ——————————————————————————————————————————————————————————————————————————————————

Will save an mp4