Table 1 Online presentation data size and transmit frequency
From: Shared virtual presentation board for e-Meeting in higher education on the WebELS platform
Data types | Data size (bytes) | Transmit frequency |
|---|---|---|
WebELS VPB Data for cursor-based presentation mode | 34 ~ 54 | Every slide control events |
WebELS VPB Data for pen-based presentation mode | 100 ~ 10,000 | Every mouse drag release |
Flash-based Slide Synchronization (using SharedObject class for fetching the image) | ≈ 1,000,000 | Every slide change |
Flash-based Slide Synchronization (using SharedObject class for fetching annotation) | 100 ~ 10,000 | Every mouse drag release |
Compressed Screen Share Image Size | ≈ 100,000 | Pre-set frame per second (fps) |