This app rename Photo/Movie file name automatically.

Renamed file name format :
Photo : [prefix]YYYYMMDD_hhmmss_nnn[postfix].jpg
[prefix][arbitrary string][postfix].jpg
Movie : [prefix]YYYYMMDD_hhmmss_nnn[postfix].mp4
[prefix][arbitrary string][postfix].mp4

Very Simple and Easy!!

The rename of SD card files can be done.

Time Stamp can be gotten from file system or EXIF file.
(When EXIF time stamp is selected but If EXIF timestamp is not available file system time stamp is used.)

Supported file extemsions are :
JPG JPEG JPE PNG GIF TIFF TIF BMP
AVI MP4 M4A MOV QT MPEG MPG WMV.

[Caution]
Don' forget make backup all PHOTO and MOVIE files on 1st use.

[About Foreground Services]
This app uses "Content Observer" to detect when other apps save photo/video files. To ensure "Content Observer" continues to function even after the user removes this app from the task list some functions of this app are kept running as foreground tasks.

[Known problems]
- The filename of "Image""Video" and "Recent" in "Files" app is not changed if data is stored in internal storage in Android 8.

[Online Manual]
https://www.indigosoftwareinc.com/pm-rename-en