NComputing L300 User Manual page 45

NComputing L300 and L350 User Manual
Q: Why does a warning message appear when I install the vSpace Server software?
A: Windows provides a firewall that displays a security warning message when a new network port is
used (see below). If you click the "Keep Blocking" button, you will not be able to find NComputing
servers. If you select the "Unlock" button, the port will be open unless you block it manually. If you
select the "Ask Me Later" button, the port will be open temporarily and the security message will
continue to appear whenever the port is accessed.
Q: Can the product support 100Mbps or 1Gbps?
A: The L300 and L350 will accept a 1Gbps connection, but the device itself does not benefit from
bandwidth which exceeds its average usage (typically under 10 Mbps)
Q: What is transcoding?
A: Transcoding is the process of converting media formats from one type to another. This is a common
technique used when wanting to optimize video for a given player or device. For instance, you may
transcode some video to play on a mobile phone. vSpace Server has an efficient transcoding engine that
converts video into a stream that can be locally decoded and displayed on the L300 or L350 device in
real time, completely transparent to the end user.
Q: If a customer wants to publish video content optimized for the L300 or L350, what format is best?
A: Original content up to standard DVD resolution (D1 - 720x480) will have the best playback
experience. Content may be encoded in many codecs, but if being distributed over the web, high
compression H.264 or MPEG4 delivers small file sizes, but if size is not an issue, lower compression
formats such as MPEG2 require less processing on the server. Please create a test clip in one of the
supported formats mentioned in the Multimedia section and test it on your intended video player.
Q: The accelerated multimedia feature of the L300 and L350 sounds like simple multimedia redirection.
How is this different?
A: Multimedia redirection found in terminal server products from Microsoft or Citrix simply send the
entire media file over the network to be played by the client. This means that the client must have a full
media player software stack and the necessary codecs to decode those files. This means that to achieve
the same quality of video as the L300 or L350, a thin client must be 2-3X more expensive and require
painful management of the local software stack to constantly ensure that codecs are loaded. Typically,
this means the device needs to be similar to a full PC.
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