There is no status of the Generic ANC input carried over SMPTE 2038 output: bit
rate or ANC content. However, there is an alarm if the incoming ANC (excluding
audio) exceeds the bit rate set by the user. In this case, the ANC output will be
dropped to avoid exceeding the maximum user bit rate and thus avoiding corrupting
other components in the Transport Stream.
8.5.9 Reflex and Seamless Operation Problems
8.5.9.1 Internal Reflex Automatic Settings Problems
Different video formats in the same internal Reflex group may cause range issues
when the Reflex setting is set to automatic mode. In this case, we recommend using
the manual settings and using the recommended settings listed in Chapter 3,
Getting Started.
If problems are observed with Reflex in automatic mode, the following Reflex HD
MPEG-2 manual mode settings are recommended: Bmin = 3 Mbps, Bmax =
20 Mbps, Buffer Delay = 2.6 seconds.
8.5.9.2 Seamless Mode Parameter Restrictions
When the buffer mode is set to Seamless, the configuration of the encoder buffer
size (VBV buffer in MPEG-2, CPB buffer in H.264) is set by the user using the
following parameters:
• Buffer Delay between 500 ms to 7000 ms (Seamless Buffer Delay)
• Min Seamless Bitrate (Bmin)
• Buffer Size = Bmin x Buffer Delay
In seamless mode, restrictions in Bmin and seamless delay are in place to force a
reasonable encoding buffer size and avoids it to be to low
If the seamless delay and Bmin are set too low, the Bmin range will change so
that the buffer size (Bmin x Delay) remains above 1 Mbit in SD and 3 Mbit in HD.
For example, in SD if the buffer delay is set to 500 ms, the lowest allowable Bmin is
2 Mbps. in HD, a buffer delay of 1000 ms will not allow any Bmin to be set below
3 Mbps.
8.5.9.3 Seamless Mode parameter results in a buffer size out of specification
Although you are prevented from setting Bmin and Delay to values that will result in
a small buffer size, there are NO restriction on the maximum value of the resulted
buffer size.
To ensure the buffer is compliant to the specifications, ensure that the buffer size is
limited to the MPEG-2 or H.264 specifications.
Buffer Size = Bmin x Buffer Delay
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