NCast Telepresenter M4 - Manual (Page 68)

NCast Telepresenter Reference Manual
</archive>
The use of XML format allows the content to be encoded in the Unicode (UTF-8) character set.
The <main_window> and <pip_window> tags record the position of these windows at the start of a session.
This information may be useful for downstream video editing processes which wish to extract video or
graphics details from these windows.
The “video_format” types currently supported are “mpeg4” and “h264”. There is currently only one audio
format available, “aac”.
5.1.4. Details Button
Along with every archive file an associated text file (in XML format) is kept with additional information about
the archive. The Details button allows entry of “Title”, “Presenter” and “Description” comments into this file.
These entries may be made during the presentation or afterwards.
5.1.5. Remove Button
Places the archive file into the Trash. Files may be recovered from the Trash Can if they have not yet been
automatically deleted by the system during recording operations which require more disk space.
5.1.6. Upload
Clicking on this button marks this archive file for immediate upload (via FTP or Secure FTP) to the
configured FTP server (see Section 4.7 for details on (S)FTP server setup). The upload is executed
immediately and can start when a Session is active. Immediate upload may interfere with ongoing Session
streaming, and should be used cautiously or not at all if network bandwidth is not available to support both
streaming and file transfer.
The (S)FTP information is specified on a Channel basis. Since each Channel has its own unique (S)FTP
information, different (S)FTP sites may be accessed by starting or using different Channels.
For example, if the Session starting at 9:00 am needs to be uploaded to Dept. A's server, and the Session
starting at 10:00 am needs to be uploaded to Dept. B's server, this is easily accomplished by specifying
different (S)FTP sites in the Channel Table. Or if some uploads go to a local, on-campus server and if other
uploads go to a remote CDN server, the Channel Table settings may be used to differentiate the upload
repository for each different recording.
Information about what Channel was used to record an archive is retained with the archive. If later, from the
Archives page, a new upload or re-upload is requested, the system extracts current (S)FTP settings from the
Channel Table entry and uses that (S)FTP site information to upload the recording. Thus, the “Upload All
Archives” button may result in the transfer of existing archives to many different (S)FTP sites.
5.1.7. Remove All Archives
This action places all archive files into the system Trash Can.
5.1.8. Upload All Archives
Clicking this button marks all archive files for immediate upload and initiates a file transfer to the configured
(S)FTP server(s). Immediate upload may interfere with ongoing Session streaming, and should be used
cautiously or not at all if network bandwidth is not available to support both streaming and file transfer. See
Section 5.1.6. above for additional details.
5.1.9. Open Trash
Files which have been removed are placed into the system Trash Can. If a file was removed or deleted in
error, opening the Trash Can permits recovery of the file, provided the file was not permanently deleted in the
quest for more recording space. At the start of recording the system reserves a fixed percent (currently 5%)
of the disk for new recordings. If the recording consumes all free space, more archive files in the Trash Can
will be permanently deleted until the disk becomes completely full.
5.1.10. Record Only Sessions
It is possible to disable multicasting of a Session in a record-only situation by using a special multicast
address in the Channel Table. To disable multicasting set all multicast addresses to “127.0.0.1”.
NCast Corporation Revision 2.2
Page 68