I'm talking about the different problems related to the experience of watching lecture videos.
Certain problems such as video resolution or audio quality are technological.
Other problems are related to the content of the videos, such as incorrect information being taught, or long periods of action without speaking (ie writing on the board).
How can I describe the latter problem? I'm leaning towards contentual, from this question with the following definition:
Relating to content (as apposed to context)
The answer to that question says 'contentual' is in the OED, but I haven't been able to find it.
Can I use 'contentual'? If not, what adjective should I use?