Chapter 1 — Getting Started
5
Argus Features
can now encode a Dolby* Digital (AC-3) stream in your primary MPEG
stream. For more information, contact your Vela sales representative and ask
about AC-3 encoding.
• You may now select four-channel audio encoding in combination with multi-
stream encoding. Spectrum users note that just one audio stream will be
included in the secondary stream. Also of interest to Spectrum users is the
fact that software supporting the production of Real and Windows Media-
formatted secondary streams has been modified for optimum quality
and performance.
• If you are using the 4:2:2 chroma option, you may now elect to turn VBI
encoding off. Prior to Release 2.6.1, the resolution was forced to 720/512 (or
720/608 for PAL) if the 4:2:2 option was enabled.
• Under special circumstances, you may specify that the first line of encoded
video for a non-VBI encode will be line 21 (instead of the standard line 22).
This change should be made only if for some reason you are unable to per-
form VBI encodes and are also unable to accept the common practice of
including closed caption data in the MPEG user-data field.
• You may elect to turn off all audio channels, encoding only video (or, with
special hardware and software available from Vela, encoding only video plus
a single Dolby Digital/AC-3 stream).
The initial 2.6 release introduced the following changes to FMTestApp:
• We removed an unnecessary call to
Reset()
from the
OnInitialize()
method.
• We set m_bErrorFlag to TRUE if
Cue()
fails.
The previous release, version 2.5, included the following changes from 2.4:
• After a lengthy WMF or Real G2 encode, Filter Manager now sends log
events with an error code of 99 to indicate the status of the indexing process.
You may want to filter these out of the log file.
• You should remove the
VTRDisconnect()
method from the error-event and
finished-event handler of the client application.
• There is a new boolean property exposed by the Filter Manager interface
called
Transcode
. The transcode feature is not currently supported, and the
property should be set to FALSE.
• We changed the
_Module.Init(NULL, NULL)
call to
_Module.Init(NULL,
AfxGetInstanceHandle())
. This change allows a more complete clean-up
when
_Module.Term()
is called.
*Dolby is a trademark of Dolby Laboratories.