
CHAPTER 1: SESSION SETTINGS
6-4
VersAtive
®
Pro, DigiVu
®
II, DigiVu
®
II Micro – Operation Manual
6.3 Adaptive Session Settings
Table 6.3a: Adaptive Session Settings
Setting
Value
Description
Name
String
The alpha numeric identifier that you can assign. This should be a meaningful
name which clearly identifies the stream or it’s purpose.
Codec
Dropdown menu Default H.264 encoder for adaptive encoding.
Frame Rate
Dropdown menu Encoded frames per second; default is use original. Choices between 1 and 60.
Keyframe Duration
Dropdown menu The time period in seconds between IDR keyframes; default is
2 seconds
.
Bframes
Dropdown menu Specifies the maximum number of concurrent B Frames that H.264 can use;
default is 2.
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
not ticked
.
Scenecut
Tick box
Not selected by default (and cannot be enabled), adaptive I-frame decisions are
disabled. 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 1-3 & Figure 1-4.
Subtitles Method
Dropdown menu Determines how subtitles (closed captions) are handled; default is
On Separate
PIDs
.
•
On Separate PIDs: Subtitles 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.
Top Field First
Dropdown menu Ordering of fields either Top or Bottom field first. Default is
Auto
.
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 De-interlace choices between Simple and Advanced detect (with and without
Double Frame rate) and Linear; default is
Linear
.
Figure 1-5: Adaptive Session Properties
Figure 1-6: Adaptive Stream Properties