Please follow the steps to output video files.
Click Video tab to toggle the output mode.
Select the format in the Format drop down list.
Modify the Output Settings.
Click Export .
You may output video files in HD or YouTube format:
Select the AVI Files item in the Format drop down list.
Click the Target Resolution radio button, select YouTube, 720p HD or 1080p HD in the drop down list.
Adjust the other output settings. Click Export .