Should not exceed the following:
SD MPEG 2 Main Profile Main Level 4:2:0 8 bit 1.8 Mbit
SD H.264 Main Profile Level 3.0 4:2:0 8 bit 10 Mbit
SD H.264 High Profile Level 3.0 4:2:0 8 bit 12.5 Mbit
HD MPEG 2 Main Profile High Level 4:2:0 8 bit 9.8 Mbit
HD H.264 Main Profile Level 4.0 4:2:0 8 bit 20 Mbit
HD H.264 High Profile Level 4.0 4:2:0 8 bit 25 Mbit
In order to get optimum settings for seamless and reflex operation, we recommend
using the recommended values listed in Chapter 3, Getting Started.
8.5.10 Transcode, Re-encoding and Pass-thru Problems
8.5.10.1 Transcode Mode VBI & Teletext Configuration Not Being Completed
The input components in the incoming Transport Stream are detected at the point
when the transcoder is setup. There is no status of input components (bit rate) or
alarm if the component disappears from the input. However, if the whole incoming
transport stream is missing, an alarm is raised. The setup and routing is therefore
static and not dynamic; any change in the incoming input will not be automatically
picked up by the unit, such as the incoming TS changing from MPEG-2 to H.264 or
the number of Teletext Lines and location changing.
8.5.10.2 Component Selection Problems When Transcoding
Transcode mode on the GUI allows the selection of components that are not
necessarily present in the incoming stream. Always check the correctness of the
component selection when using the GUI for transcode operation.
8.5.10.3 Teletext Re-encoding Problems
When setting up a re-encode of Teletext, the Teletext lines are set automatically on
the encoder output. If the Teletext lines on the input change, the encoder will not
dynamically detect and set the encoder output. Always ensure that all lines are set
as an output for the Teletext lines to appear dynamically on the output of the
transcoder.
8.5.10.4 Video Limitations When Transcoding
Transcode only allows 4:2:0 MPEG-2 and H.264 profiles up to 25 Mbps for H.264
and 80 Mbps for MPEG-2.
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