#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