A Firefly-RK3288 / Firefly-RK3399 (or other board with dual display), two monitors
Firefly open source board connects two monitors: Firefly-RK3288 uses HDMI + VGA, Firefly-RK3399 uses HDMI + DP
Copy a MP4 video to / sdcard / directory, named 123.mp4.
2. Install DualVideoScreen.apk
3. Open DualVideoScreen application, one screen shows the video, the main screen displays luncher (which can be normal operation of other applications).
4. Click DualVideoScreen again, you can turn off dual display.
Download APK and Fireware
2.Download the latest firmware for the corresponding board on Firefly website.
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