TC620-PID
Page 60
12.3.5
Advanced
Important:
If in doubt about these settings, do
not
change the default values.
12.3.5.1
Encoder
Depending on the selected encoding mode, specific parameter values in this section are dimmed
- that is, not available for configuration.
H.264 encoding, Constant Quality Mode
MJPEG encoding, Constant Quality Mode
Video > Encoder 1/2 > Advanced Settings > Encoder
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.
Recommended setting: 1 (-F models) or 4 (-S models).
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.
