This is a video editing app.
The process is done entirely on your device, no internet connection is required.

You can create videos by arranging materials (text, images, audio, video) on the timeline.
You can also create videos using only text and images without video.

You can display materials simultaneously by overlapping them on the timeline, or split materials from the timeline.
You can change the width and height of the video and the length of the video as you like.

10-bit HDR video is also supported.
HLG and HDR10/10+ format HDR video is supported. The same goes for saving (encoding).

The "Android Foreground Service" is used to perform the video saving (encoding, exporting) process in the background.
This means that even after pressing the save button, the video saving process can continue while you are operating other apps.

In addition to the pre-prepared video saving (output, encoding), we have made it possible to change the encoder settings as you like for those who are knowledgeable about videos.
・mp4 (codec is AVC / HEVC / AV1 / AAC)
・WebM (codec is VP9 / Opus)

External linking function is available for developers.
https://github.com/takusan23/AkariDroid/blob/master/AKALINK_README.md

This app is open source.
You can check the source code and build it on your computer.
https://github.com/takusan23/AkariDroid