Streaming Media Seminar by BiekePresentation Transcript
Streaming Media SeminarAVLM-VLIR Bieke Schreurs 17-6-2009
How to watch online video materials?
Download: The file is saved in its entirety on the hard disk of your PC before you can watch it.
Progressive download: the data are saved on the hard disk of the PC (like download) but you can watch the fragments that have already been downloaded before the entire file has been downloaded.
17-6-2009 Streaming seminar
What is streaming? The requested media file is located at a streaming server from which it is sent to a buffer on your PC. As soon as there are enough bytes loaded in the buffer, the video starts to play. Nothing is permanently saved on your PC. The entire file stays at the streaming server 17-6-2009 Streaming seminar
Streaming media: steps The user -> Internet User requests media file Streaming server prepares for transmission Streaming server sends the first fragments of the media file Streaming client on your PC saves the first incoming fragments on the buffer memory of your PC De buffer is loaded until enough fragments have reached the streaming client Streaming client starts to play while the server continues the send new fragments of the file to the buffer 17-6-2009 Streaming seminar
For the user:
No long waiting times download Less space on harddisk download, progressive download Random access, can go forward and backwards Access independent of location through internet connection
For the provider:
No adaptatio/editing of media possible: video located external to viewer (progressive) download (IPR issues) Tracking: who, what, when, references
For educators and learners:
Integration in webpage and synchronisation with other supporting materials: links, documentation, other mediafiles, pictures, chat, forum, all in the same environment 17-6-2009 Streaming seminar
Integration - Synchronisation Nelson (1987): “ The trouble with interactive media is that they all tend to be closed objects that can’t be combined or viewed toghether (whereas books can quote eachother and lie open on the same desk)” 17-6-2009 Streaming seminar
Instructional video BBC 2005. “Good Shooting Guide” http://www.bbctraining.com/onlineCourse.asp?tID=5914&cat=2781 Before you shoot Film the perfect picture Record the sound you want Prepare for the edit Practical exercise