Changing date and time settings
You can change date and time settings from the “Preferences” page in the “Set Timezone” section.
Select the desired time zone and date format and press the "Apply" button.
Also in Preferences you ca find the "Still Image Capture" section. Here you can select the time interval, or percentage from total video length, the still image should be captured from when a new video is uploaded.
After completing the values, press the Apply button. Starting with the next video you upload the image will be captured from the selected interval determined by time or percentage.