PiPO M9 pro OTA - Manual (Page 22)

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Tap the video you would like to play. Tap the screen to show the video tool bar.
You can play back, fast forward, pause your video here. You can also add
bookmark for your video, adjust brightness, or set screen ratio here. Here is the
toolbar:
With the Wi-Fi on, you are also able to view an on-line video.
6.2.1 HDMI output
a. Tap 'Video player' or other video players and play a required movie.
b.
Adjust your TV set and select “HDMI” output
c. Connect the tablet to your TV via HDMI cable, and wait for a few seconds
for your TV set to receive signal.
You can also operate on your tablet while HDMI connected..