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CD-ROM Today - The Disc! 9
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cdrt09.iso
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winvideo
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vfw11d.exe
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README.TXT
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1994-10-05
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3KB
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60 lines
September 29, 1994
Dear Video for Windows Developer:
Enclosed you will find the Video for Windows 1.1d Runtime. This release includes some important
enhancements requested by you, including improved palette support, Display Control Interface
(DCI) support and overall improvements in performance.
The files that have changed are the following:
File Name Change Description
AVICAP.DLL Added application pre-roll and post-roll support.
DCISVGA.DRV DCI provider for S3 and Cirrus Logic display cards.
DVA.386 Added DCI support.
ICCVID.DRV Cinepak Codec: Added palette support.
IMAADPCM.ACM IMA ADPCM Codec: Change in the compression algorithm used in order to fully meet the official format specifications.
IR32.DLL Indeo Codec: Updated to version 3.2, added palette support.
MSVIDEO.DLL Added palette and DCI support.
MSVIDEO.NT Updated the Windows NT 3.5 to support 16 bit capture.
OLE2DISP.DLL Updated to current release of OLE.
OLE2NLS.DLL Updated to current release of OLE.
SETUP.INF Updated to new file sizes, versions and dates.
STDOLE.TLB OLE file missing from original VfW runtime.
TYPELIB.DLL Updated to current release of OLE.
Palette Support
Video for Windows has always allowed the application to select a specific
palette for playback on 8 bit displays. Unfortunately, the codecs
(compressor\decompressors) were never aware of this palette request.
Instead the codecs would dither to their own standard palette. Video for
Windows would then further dither the video to the requested color palette.
The net result was 24 bit videos, when played back with a requested palette,
were dithered twice. This would compromise the quality of the video.
This problem has been solved with this new drop of MSVIDEO.DLL, and the
Cinepak and Indeo codecs. The codecs will now decompress directly to a
requested palette. You can request the codecs to use a palette with either
the SETVIDEO <alias> PALETTE HANDLE TO <hpal>, or REALIZE <alias> BACKGROUND
MCI commands. You can find these commands in the Video for Windows 1.1
documentation.
DCI Support
DCI allows Video for Windows to take advantage of the enhanced capabilities
of your display cards. You will now see faster and smoother playback of
video on display cards that use the S3, Cirrus Logic, and many other chip
sets. Video for Windows will also support all DCI-enabled display adapters.
Furthermore, the performance of stretched and clipped videos will be
drastically improved for all displays.
For further information on API changes, please see the "New Performance
APIs" listed in the DEV_KIT.TXT of the Video for Windows SDK. This SDK is
available from the Fall '94 addition of the MSDN Level II.
Sincerely,
The Video for Windows Team