Siqura C-60 E-MC, Руководство пользователя

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Siqura C-60 E-MC
Page 44
Encoder
Advanced Settings, Encoder, MPEG-4 mode (Variable bit
rate)
Encoder (MPEG-4 mode)
VBR maximum bit rate Range: [0...15000]. Sets a limit for variable bit rate.
Q min I Used to achieve consistent picture quality within a single GOP or across
consecutive GOPs. Lower values produce a better picture, but require more
processing. Default Q min I = 3; default Q min P = 2.
Q min P
Frame rate divider Relates to the frame rate configured in the Encoder Settings section.
X-resolution Variables that enable you to freely set picture resolution instead of using the
resolution presets in the Encoder Settings section.
Y-resolution
Request I-frame When joining a multicast stream in the middle of a long GOP, requesting an
I-frame will speed up response time, i.e. image display will start sooner.
Request I-frame hold off Range: [0…255] frames. Requesting (too) many I -frames may add to latency. To
prevent this, you can specify the distance in frames, starting after the previous
I-frame, before another I frame is sent upon request.
Meta data insertion mode For details, see the section on Meta Data Insertion (on page 51).
Disabled No meta data added to stream.
Fixed interval Not supported for MPEG-4 streams. If a fixed interval is set,
the nearest I-frame will be used.
Each I-frame Data block is added after each I-frame. The interval is
determined by the GOP length, therefore.
Meta data insertion
interval Activate this parameter by setting Meta data insertion mode (above) to Fixed
interval .