
CHAPTER 1: SESSION SETTINGS
6-2
VersAtive
®
Pro, DigiVu
®
II, DigiVu
®
II Micro – Operation Manual
Setting
Value
Description
Video Encoding Parameters
Use Video
Tick box
Tick to enable the Video stream in the output.
Codec
Dropdown menu Choice between MPEG2 & H.264. Some following settings depend on this choice.
Codec Profile
Dropdown menu Choices of Baseline, Main, High, Low Latency.
Bit Rate
Integer
Enter encoding rate in kbps.
Codec Speed
Dropdown menu Adjust for best performance based on scene action. Recommended to use default
setting for most streams.
Subtitles Method
Dropdown menu Determines how subtitles (closed captions) are handled; default is On Separate
PIDs.
•
On Separate PIDs: Subtitles are placed on PIDs separate from video and audio
streams.
•
Overlay in video: Subtitles are added into the video stream.
•
Ignore Subtitles: Subtitles are not passed through.
VBR
Tick box
Tick to enable variable Bit Rate output; default is
Constant Bit Rate
(Un-ticked)
Keyframe Duration
Dropdown menu The time period in seconds between IDR keyframes; default is
2 seconds
.
Badapt
Tick Box
Turn on the adaptive B-frame placement decision algorithm. This setting controls
how H.264 decides between placing a P or B-frame. Choice is true (Ticked) or
false (not ticked), default is
Box Ticked
.
MPEG2 Level
Dropdown menu Only in effect for MPEG2 codec. Choice is Main & High.
Scenecut
Tick Box
Selected (enabled) by default (and cannot be disabled in MPEG2 Codec),
adaptive I-frame decisions are enabled. Disabling Scenecut prevents H.264 from
generating a key frame when there is a scene cut in the video; important to keep
key frames consistent for multi-bitrate videos. See Figure 1-4 & Figure 1-3
and
description below.
Bframes
Dropdown menu Specifies the maximum number of concurrent B Frames that H.264 can use;
default is
2
.
CABAC
Tick box
Enables CABAC (Context Adaptive Binary Arithmetic Coder) stream compression
and reverts to CAVLC (Context Adaptive Variable Length Coder) system if un-
ticked, which significantly reduces efficiency and the decoding requirements.
Default
CABAC
(Ticked).
Video Pre-processing Parameters
Frame Rate
Dropdown menu Encoded frames per second; default is use original. Choices between 1 and 60.
Resolution
Dropdown menu Select from many choices for the appropriate resolution.
Top Field First
Dropdown menu Ordering of fields either Top or Bottom field first. Default is
Auto
.
Aspect ratio
Dropdown menu Choice between 1:1, 4:3 and 6:9 or Use Original; default is
Use Original
.
De-Interlace
Tick Box
Allows de-interlacing of video frames to convert from Interlace to Progressive if
box is ticked; default is
not ticked
(no de-interlace).
Interlace Method
Dropdown menu Only effective if De-Interlace is selected. De-interlace choices between Simple
and Advanced detect (with and without Double Frame rate) and Linear; default is
Linear
.
Cropping
Integer
If box ticked, enter number of Pixels to be cropped from each side of the picture.