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The following table lists the recommended bitrates for MPEG-2 video:
MPEG-2 Video Recommended
High
Medium
Low
High-definition is supported for playback to a set-top box. The recommended bitrate is 8-12 Mbits.
MPEG-4 AVC (H.264)
MPEG-4 files must be encapsulated in an MPEG-4 stream (.mp4). Files must have the MOOV Atom at the start of the file for fast
start. The audio must be in AAC format. The following table lists the recommended bitrates for MPEG-4 video.
MPEG-4 Video Recommended Bitrates
High
Medium
Low
NOTE: The bitrates specif ied above are for playback on a PC unless otherwise stated.
MP3
A bitrate setting is not required when uploading MP3 files as the bandwidth requirements are modest compared to video. All MP3
files are uploaded using high bitrate.
NOTE: Tablet users can only view and play MPEG 4 and MP3 f iles.
Set-top box users can only view and play MPEG 2 and MP3 f iles.
Video on Demand and Managing Content
All content is stored in the archive in a hierarchical structure, much like folders on a PC, and is displayed in a similar manner in the
archive service menu. The terms folder and category are interchangeable, similarly video refers to either video or audio files.
The Archive > Recent Updates page shows the 100 most recent updates in the selected archive. This page only shows published
videos. If the user is a non administrator and access control is enabled on this archive then they user will only see updates in
folders that they have been given view permission to by the system administrator. Select a video and click Open Containing
Category to show the category containing the selected video.
Choose Archives > Browse to view the list of archives configured in your system (FIG. 86).
List of Archives in a Vision2 System
FIG. 86
NOTE: Any account that is not an Administrator, will only see published videos when browsing an archive from a tablet or Set Top Box
interface.
Double click an archive to view its contents (FIG. 87). Each archive has the following special folders which cannot be deleted:
DVR Recordings which contains videos recorded by continuous or scheduled record services.
A trashcan - This is a special folder which contains media deleted from the rest of the archive. Deleted videos are placed
here. To remove a video completely and free up hard drive space, users with appropriate permissions can delete the video
from the trashcan.
The content folder contains all the rest of the media in this archive. This is the most commonly used area of the archive.
Special Folders (Content, DVR Recordings, Trashcan)
FIG. 87
2
Vision
Instruction Manual
Full D1
8 Mbits
Full D1
6 Mbits
Full D1
4 Mbits
Full D1
1.5 Mbits
Full D1
800 Kbits
SIF
400 Kbits
Archive Service
61
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Troubleshooting
