Chapter 3 ’Web User Graphical Interface’ — Workflow Library
314 Electra VS
-
Version 05.10
User Manual - Rev. A
Custom
: configure manually the decoder delay and the coder
delay (these parameters are not available if the
Rate mode
is
set to
Statmux
):
- Decoder delay
: this parameter is associated to the
decoder buffer. Increasing this delay improves the quality.
However, the zapping time is longer.
- Coder delay
: this parameter can have 3 values:
-
Standard
: the coder delay is 53 frames. It gives the highest
video quality.
-
Short
: the coder delay is 39 frames.
-
Ultra-short
: the coder delay is 25 frames. There is an
impact on video quality.
Deblocking
: enter a value (
Sharp
,
Medium
,
Soft
) to define the
strength of the deblocking filter that will be applied to the stream. This
helps to prevent the blocking artifacts resulting from image
compression. Disabling the deblocking gives a sharper image, which
might be a good choice when the video bitrate is high.
Closed caption
: set to
Insert closed caption
if you want closed
captions that are present in the incoming MPEG-2/H.264 video stream
or from the SDI input to be collected and integrated in output.
Psycho-visual enhancement
: leave to
ON
to obtain the best video
quality. Set to
OFF
to obtain better results with basic PSNR/DMOS
video quality analyzers (however the video quality is lower).
ISDB-Tb syntax
: specific adaptation of the syntax to the ISDB-Tb
standard.
Web TV chunk size accuracy enhancement
: Set to
true
if you
connect the encoder to a packetizer for Web TV output and if the
accuracy of the chunk size is a major concern. In this case, only
Coder
Delay
can be changed,
Decoder Delay
is fixed to 500ms.
Closed Caption Descriptor
: if set to
Pass through
, the descriptors
are copied in the output PMT.
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