Playback
Click "Video Playback" to enter the playback interface, select the time to call the video,
click seach button
the video will be automatically retrieved;
play
：
Start current playback;
stop
：
Stop current playback;
Slow
：
Slow down playback speed (1/2, 1/4, 1/8, 1/16 times respectively);
Fast
：
Speed up playback (2, 4, 8, 16 times respectively);
Full screen
：
the playback screen will be displayed in full screen;
Sound
：
The sound in the video can be turned on/off.
Double click the position of the search bar to play, or click the "Play" button to start
playback.
（
Note: This function requires the device to support TF card storage.
）
