We are developing an educational tablet-app for our customer. The app is required to show fullscreen videos of university style lectures In-App. After a short introductory phase, where the lecturer is introducing himself and the topic, only powerpoint slides are shown, with oral commentary by the lecturer.
Since we have to use MP4 videos, I'm looking for advice, be it scientifically evident or experience based, on which resolution the videos should have to make sure, that the text in it can be read properly on modern 10 inch tablets.
I've already looked around a bit and only found vague advice like "one level of screen-resolution below the tablets native screen-resolution", but I'd be interested in more elaborate answers towards that topic.
To answer some question that came up:
- Do you have control over content strategy / production? -> Sadly not. We are getting the content directly by the lecturers and these guys are very stubborn when it comes to external advice.
- Are there bandwidth/storage limitations on your side? -> Not directly on "our" side, but client-side there are the storage limitations of the tablet model that will be used. Since it'll almost certainly be a device with 32GB capacity, I think we are safe on this.
- If you are using a custom player, are you able to provide multiple asset resolutions to handle different user bandwidths a la YouTube? -> That won't be possible, because the source material will only be existing in one format/size. (i.e. MP4/720p)
Thanks for the great feedback so far.