Flip 3gp horizontal

Download and install the latest version of Filestar.
Right click on one or more 3gp file(s) on your desktop and select Convert with Filestar.
Type flip horizontal in the search box.
Press Flip.

What is .3gp?

Name: 3GPP Multimedia File
Extension: .3gp
Format: Binary
Category: Video
Developer: Third Generation Partnership Project
Description: A 3GP file is a multimedia file saved in an audio and video container format developed by the 3rd Generation Partnership Project (3GPP). It stores video and audio streams that are transmitted between 3G mobile phones and over the Internet.
MIME Type: video/3gpp
Sample: sample.3gp
Wikipedia: .3gp on Wikipedia