Despite the vast majority of online courses being video based, research indicates that reading is a better form of study than watching video or listening to audio.
It forces concentration and improves information retention and comprehension.
Reading is also quicker than listening, with students typically achieving a reading rate of around 280 words per minute when reading but only 180 when listening to audio or video because this is restricted by speaking speed.
However, video can make courses more fun, while audio files can be listened to while driving or while travelling to and from work. And, while text may be a more effective media for most, there are some that learn better with different formats.
Most online course platforms allow creators to upload videos, audio, and text, but not all allow other forms of media. Slides, for example, are a popular learning tool in universities and other educational institutions.
As well as lacking the capability to upload certain types of media, some online course platforms may restrict the file types you can upload. If you record videos in .mov format but can only upload them in .mp4 format, you will have to convert every file before you upload.