Grass Valley Vertigo XG Integration v.2.3 - Manual (Page 8)

1-4 Vertigo XG & iTX Integration User Guide
Integration of Vertigo XG & iTX
Limitations of the XG Inside
The following limitations currently apply to the integration of the Vertigo XG components in
the iTX Output Server.
•
The system can handle one or two video streams from any of the following source
options: one video clip; two video clips; a live feed; a video clip and a live feed.
• The integration is suitable only for a single-channel iTX Output Server.
• Cel animations are only supported if they are in the Miranda VAF format.
Uncompressed TGA sequences are likely to have an adverse affect on the
performance of the Output Server.
• The XG Renderer plays out audio clips embedded in a Vertigo XG template; but it does
not perform any audio mixing with content from the iTX Player, since this contains no
audio stream. This means that Vertigo templates cannot modify the audio properties
(e.g. volume levels) of the clips played out by iTX.
• Audio-level reduction (ducking) and sound effects cannot be controlled from the
XG Renderer.
• The XG Renderer does not modify any AFD code in the video streams.
• The XG Renderer does not include caption or subtitle data in the video stream it returns
to the iTX Player.
• The XG Renderer cannot pass SNMP data to the iTX system.
• Where there is only one video stream and the source is a live feed, only transitions that
do not involve overlapping video streams are possible (e.g. cut-cut; fade out, followed
by fade in).
• Since the XG Renderer is responsible for the compositing of PGM A and PGM B video,
traditional iTX functionality for squeeze-backs and picture-in-picture (PIP) effects do
not work.