STB v3.7.3b Release Notes
STB Release Notes 3
• User-friendly upgrade application.
Caveats
This section addresses known issues in this release, most of which have an easy workaround.
For more information about any item, or help with an issue not listed here, contact your
reseller or VBrick Customer Service.
• RTSP Interleave does not work with Cisco's Application and Content Networking
System (ACNS) software.
•
The VOD W server does not respond to a rewind request issued after the end of stream.
• If a Set Top Box will not play live MPEG-4 multicasts in MCS mode, verify that the SAP
Format is ISMA Compliant and that Session Information has been configured. In IWS go
to
Configuration: Encoder > Announce (SAP) to configure these parameters.
• In the 56, 128 and 200K MPEG-4 templates, video disruptions of 1–2 seconds may
occur every 4–6 seconds; the audio is not affected. To work around this issue , change
the SAP format. In IWS, go to
Configuration: Encoder > Announce(SAP) and set Format
to ISMA Compliant.
• When playing an MPEG-4 stream in
Local or MCS mode and there is a loss of service at
the encoder end, the STB will attempt to restart for 20–30 seconds. During this time the
STB will not respond to keyboard or mouse commands. This is expected behavior. When
service is restored, control will return to the STB and you can restart the stream.
• In set top boxes with a Rev. A Sigma decoder chip (P/N 8000-0044-0000), there is a
pause in the video every 10– 20 seconds to fill up internal buffers and avoid lip-sync
problems when playing MPEG-1. MPEG-1 is not recommended on Rev. A hardware.
• The logo that appears at boot time is not viewable on a PAL monitor. Also, you cannot
use the Linux shell command line interface on a PAL monitor. Other interfaces such as a
VGA display, terminal connected to the STB's serial port (available on part number
8000-0044-0002 or later), Telnet, or the STBs integrated web server can be used to
manage the box.
• On rare occasions, the TV may display in black and white rather than in color. If this
happens, reset the STB.
• When playing certain MPEG-4 VOD files, the STB UI may reset. Files that exhibit this
behavior are not playable on the STB.
• When receiving an MPEG-4 stream requested via RTSP from a VBrick MPEG-4
encoder running software earlier than version 3.1.0, the
Key Frame Interval should be left
at its default value of 3 seconds. A value of zero or larger than 3 will prevent reliable
MPEG-4 playback on the STB.
• When browsing the web in
MCS mode, the user is prompted with a message from the
browser before returning to the ETV Portal Server user interface.
• Exiting fullscreen after the video has played to the end will cause the video to restart.
• There are frequent frame drops when streaming at a low data rate (about 300K) from the
QuickTime Broadcaster application.
• For MPEG-4 RTSP streams from a VBrick encoder, the encoder should be configured to
enable RTCP transmit. See the STB Admin Guide for details.
• The FTP client on the STB does not run well over the serial port. Use another interface
instead.
(21 pages)
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