QVidium StreamViewer - Manual (Page 5)

User’s Manual QVidium™ StreamViewer
2
Operation
2.1 Principles of Operation
The QVidiumHD™ StreamViewer is a software application that combines a streaming
Video over IP hard disk recorder with a high-definition video decoder to provide a versatile
and robust means for receiving, recording and displaying live video content from a wide
variety of video sources.
The QVidiumHD™ StreamViewer is built around common industry standards for video
over IP streaming to insure compatibility, flexibility, and interoperability with other video
over IP encoders and camcorders. These standards include: MPEG-2, MPEG-4, DV, and
DVCPro-HD video decoding, Dolby AC3, MPEG-1 Layer-II, and MPEG-2 audio decoding,
MPEG-2 Transport Streams, ProMPEG Video Transport and Forward Error Correction
(FEC), RTP/UDP/IP video packet protocol, and Microsoft DirectX™ and DirectShow™
video and audio technology. (Windows Media video decoding is available as an additional
option upon request.)
This instruction manual provides detailed operation instructions for each of the
StreamViewer’s two main functions:
• L
IVE S TREAMING V IDEO R ECORDER
• L
IVE S TREAMING R ECORDING M ONITOR AND V IDEO S TREAM P LAYER
2.2 Closed Captioning
The Stream Player recognizes, decodes, and displays NTSC closed captioning, as specified
by the Advanced Television Systems Committee standard ATSC A/53 for Video Blanking
Interval (VBI) data embedded on video line 21. (At present, European Teletext for Pal
video is not supported.) When live streaming video content contains closed captioning data
(locally stored video with closed caption is not supported) the Stream Player will
automatically display the closed captioning text as an overlay on the displayed video. This
display of closed captioning text is independent of the audio and will not affect play out of
the audio feed.
Page 4 © 2007 QVidium™ Technologies, Inc.