Another problem that may appear out of the blue is running out of free space in your account storage in the service you use. Usually, webinar services limit the storage space on user accounts, requiring additional payments to either extend the online storage or purchase a more expensive subscription plan. So, in this case, you should give some thought to the size of the videos you want to use. First of all, no Full HD or 4K videos. As your online presentation may also be viewed on mobile devices, the difference between HD and Full HD quality is barely noticeable, but the difference in size can be huge. In this case, large video files can be compressed and reduced in resolution.