
DTS-HD Master Audio Suite™,
User Guide
v 2.5
Confidential - Do NOT Duplicate 86 DTS Document No.: 9301F55800D
17781 v1
14. CSV File Import Supplement – Seamless Branching
1. Required Software / Overview
Required Software
1. Microsoft Excel – any version (Macintosh/Windows) capable of exporting CSV files
Seamless Branching is a space-saving mechanism supported by Blu-ray Disc players, commonly used
when multiple versions of a film are included on a single disc. Instead of storing the entire film on the
disc several times, branch points are established within authoring to jump between extended and abridged
versions of scenes. For more information about Seamless Branching, please contact your authoring
system provider.
Overview
In order to mitigate audible anomalies when switching between dissimilar (non-contiguous) PCM
waveforms, the DTS decoder within players and AVRs will automatically insert a quick crossfade at each
branch point. To further avoid audible anomalies, DTS suggests that a specific encoding filter be
temporarily disabled at these points. Please note that disabling this filter will not affect the audio quality
or lossless capabilities (DTS-HD Master Audio) of the encoder.
When Seamless Branching has been enabled on the BITSTREAM tab, the DTS-HD MAS Encoder will
accept a CSV file containing branch point timecodes at which the encoder will temporarily disable the
above-mentioned filter. Stated simply, CSV (comma-separated values) is a file format that has columns
separated by commas and rows separated by newlines. Since the CSV file accepted by MAS only
utilizes one column, it will actually not contain commas, only newlines for each timecode value.
2. Single Clip or Use CSV Branch Points?
If the Seamless Branching feature will be utilized on a Blu-ray Disc, all encodings created for that disc
should use a Seamless Branching mode: Single Clip or Use CSV Branch Points.
As described above, the encoder must receive all branch points prior to encoding so that it can disable an
encoding filter appropriately. If an encode contains no specific branch points (e.g. an extended or
inserted scene), set the destination format to Blu-ray Disc Primary Audio on the AUDIO tab and enable
Single Clip within the Seamless Branching section of the BITSTREAM tab.
Single Clip
The Single Clip mode does
not require a CSV file
.
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