Video Speed - Change & Edit vs VBooster - Speed up video Utilisation & Stats

VBooster is the app for changing playback speed and saving to your camera roll. [Simple Mode] Simple Mode is for change playback speed of entire a video easily. -- Playback speed -- You can change playback speed from x0.1 to x10.0 by 0.1 steps. -- Sound types -- You can choose 3 types of sounds. 1. Change pitch by speed 2. Keep pitch type A 3. Keep pitch type B -- Music -- You can add songs as Background music. -- Music speed -- You can choose 2 types of speed. 1. Up to a speed of the video 2. Original speed Q.Witch types are better " Keep pitch type A" or "B"? A. It depends on the sound of the video. So please try both to find the ​better one. [Time range mode] Time range mode lets you change the playback speed of time ranges you specified. --Add a new time range-- ・Seek to the time you want to start a new time range with seek bar. ・Press [+] button to start creating time range, then move to the end of the time range. ・Then, press [check mark] button to finish adding a new time range. ・After added the time range, the playback speed setting screen will be shown, and you can change the speed. --Overwrite a time range-- ・By the default, you can't specify over another time ranges. ・To overwrite another time ranges, turn off the switch that is located on the right side. --Change playback speed or delete a time range-- ・If you want to edit playback speed or delete a time range, tap the time range on the seek bar. ・Then, the edit menu will be shown. --Other settings-- ・You can set BGM/Frame rate and so on as well as Simple Mode. ・To do that, press [gear] button to open settings.