Published Conference Proceedings - Paper
Video for the masses: Measuring the educational effectiveness of very low bit-rate video streams
Griffiths, L & Thornhill, S & Tsolakis, P 2003, Video for the masses: Measuring the educational effectiveness of very low bit-rate video streams, in: 'Gray, P., Johnson, H., & O'Neill, E. (Eds), Proceedings of HCI2003: designing for society Volume 2.', Research Press International, Bath, Bristol, UK. Conference details: HCI2003: Designing for society.
This paper describes a laboratory study that was conducted to explore whether subtly different low quality and low bit-rate streamed video would contribute to the pedagogical effectiveness of video material and whether there was a measurable difference.
Around 100 test subjects were split into two control groups (very low 45Kbps and low 80Kbps bit-rate video) to view a video documentary and were given test questions to answer that related to its content.
The results of the study indicate that overall there was no significant difference in the test scores between the groups.
These findings would suggest that low bit-rate streamed video is sufficient for all but the most visually detailed or dependant eduational material and that this bit-rate could be deemed acceptable and effective over typical home user (v.90 - 56Kbps) dialup Internet access and mobile devices.
Griffiths, L & Thornhill, & Tsolakis, eds. 2003, Gray, P., Johnson, H., & O'Neill, E. (Eds), Proceedings of HCI2003: designing for society Volume 2., Research Press International, Bath, Bristol, UK.
HCI2003: Designing for society