Item
Description
Encoding profile
Main profile
Compatibility mode for decoders which do not
support High profile.
High profile
Improved encoding quality (as compared to Main
profile).
CQM max bit rate
Available in Constant quality mode (CQM). Use this setting to set the
maximum bit rate for a given picture quality configured in the Encoder
Settings section.
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.
Scene change
detect
Enables the scene detection algorithm. If enabled, the encoder can
fully restart a new GOP with an I-slice and an instantaneous decoding
refresh (IDR) picture, depending on image content.
Scene change
detect period
Sets the minimum time between scene changes in milliseconds. This
is a hold-off mechanism that prevents a scene change for the
specified time, starting from the previous scene change.
Force frame mode
If Force frame mode is enabled, the H.264 video stream is
compressed and sent using entire frames (Frame mode). If disabled,
the stream is compressed and sent using entire frames or the
separate fields (Field mode).
Deblocking filter
Enables the in-loop deblocking filter in the AVC encoder. H.264
encoding can handle portions of the video image in blocks of varying
sizes which can be processed independently. The deblocking filter
enhances image quality by smoothing block edges and reducing
blocking distortion. Be aware, however, that applying the filter
requires substantial processing power.
Deblocking filter
alpha coefficient
Set the alpha/beta coefficients of the deblocking filter. Entering
experimental values for these coefficients may help you in achieving
optimal image quality.
Deblocking filter
beta coefficient
Meta data
insertion mode
Determines the method used to add meta data to the stream. For
details, see the section on Meta Data Insertion.
Disabled
No meta data added to the stream.
Fixed interval
Activates Meta data insertion interval parameter.
Each I-frame
Data block is added after each I-frame. The interval
is determined by the GOP length, therefore.
Meta data
insertion interval
Range: [100-10000] ms. Sets the (fixed) interval at which meta data
is added to the stream. Activate this parameter by setting Meta data
insertion mode (see above) to Fixed interval.
Video
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