First, make sure your device is a Mac with a system version of 10.10 or more.
Tools:
Browser: Safari.
Video: QuickTime player
Video Editor: Handbrake
1. Record Video: Open QuickTime, select "File"-"New movie recording" Click on the drop-down box to appear below the screen.
Start recording and note that the video should be within 15-30 seconds.
2. Editing
This is mainly the conversion of video encoding format. The tool we used was handbrake and went into the handbrake interface to import the video we just recorded. Here we mainly configure the following several options
①fps: We'll use 24. Sample rate for ②audio: 44.1. Bit rate of ③audio: 256. Other default settings.
Click the Start button in the upper left corner to start the reload. If you need to change the size of the video, you can set it up in the title above.
3. Upload to AppStore according to the corresponding format.
Note: The configuration of transcoding is best not to change, other configurations have tried not, AppStore prompted "Your App video preview cannot be saved." Please try again. If the problem persists, please contact us. "There is no knowing what to say." There are conversion tools are best also used handbrake, other such as the format of chemical plant I have tried, also not.
Make AppStore preview video and upload