Chapter 7 | 35
Using the Transcoder
When the input source is a Dolby ED2 bitstream, the
Presentation menu
(7-1C) selects which of the presenta-
tions found in the Dolby Atmos metadata are encoded to the output stream.
The
Encoding Mode dropdown
(7-1D) determines the channel format of the encoded output. When set to
“External Metadata”, the metadata values as presented by a Dolby DP590 connected to the Control Ethernet
port of the LA-5291 will be used. If no metadata is present, or if a different channel output format is required, the
output can be encoded as 2.0, 5.1, 5.1.4, or 7.1.4.
When the “DD+ Atmos Transcoding” workflow is selected, the
Data Rate dropdown
(7-1E) lists all available
encoding data rates supported by the current Encoding Mode.
The
Dialog Normalization dropdown
(7-1F) is used to select the
dialnorm
metadata value.
Figure 7-1: Transcoder menu