This article relates to Cisco TelePresence Content Server.
Q. Seeking in the Content Server's Content Viewer during progressive downloads
A. You cannot seek to the end of a recording in the Content Viewer if the recording that you are watching is a progressive download, rather than a streamed recording. This occurs when viewing a recording being delivered by the local Internet Informations Services (IIS) web server on the Content Server.
Note: MPEG-4 and Real Media have no streaming server available on the Content Server; therefore, any on-demand content delivered directly from the Content Server in either of these formats is a progressive download.
What is a progressive download?
Progressive download is when a clip is completely downloaded, from the beginning of the clip. This is how QuickTime, MPEG-4 and Real Media are delivered for on-demand recordings, directly (where no external Media Server is used in the Template) from the Content Server. When viewing progressive downloads, you cannot seek to the end of the recording until the download is finished.
Streaming delivers the clip in smaller pieces, with the option (depending on streaming server settings) to burst-transfer the clip to allow a faster play start and seeking behavior. Streaming usually downloads only the part of the clip you are watching, rather than the whole file.
By default, when viewing Windows Media clips using the Content Viewer, recordings are delivered via streaming.