There is always an image below which shows you how to download when you go to the download page. The image shows you where to click and where not to click when you are at the download page. Please try and follow the instructions on the image.
And if you know your way about on the internet and can use opera mini to do the download, do not click play when opera mini asks you to play after downloading the video. You must rather go to your file manager and locate the video at where you downloaded to and play from there. If you play at the opera mini browser, you will only hear sounds and not video. Thank You and download the video below.