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- This package contains the following software for the Macintosh:
-
- • Indeo™ Video codec (Version 3.22.21.04)
-
- A system extension that compresses/decompresses movie files
- in Indeo Video R3.2 format.
-
- • Intel Raw Video codec (Version 1.10.20.02)
-
- A system extension that compresses/decompresses movie files in YVU9 format.
-
-
- ===================================
- Indeo™ Video codec -- V3.22.21.04
- ===================================
-
- These notes describe Intel's Indeo Video R3.22 codec, a video compressor/decompressor
- for use with Apple's QuickTime 1.6.1 and 2.0 video environments.
-
- Bit streams produced by the R3.22 compressor are completely compatible with those
- produced by other R3.2 Indeo codecs.
-
- This codec will decompress bitstreams produced by any Indeo R3.1 or R3.2 compressor.
-
-
- INSTALLATION
- -------------
- You must already have QuickTime (1.6.1 or 2.0) installed.
-
- If you have any previous version of an Indeo codec installed, DELETE IT.
- Check your System:Extensions folder.
-
- Drag the codec icon to the System:Extensions folder.
-
- Restart your Macintosh.
-
- The codec will appear in compressor selection menus as
- "Intel Indeo™ Video R3.2".
-
-
- DECOMPRESSOR NOTES
- ------------------
- This codec will decompress movies created with R3.1 as well as R3.2
- versions of Indeo.
-
- In addition to any overhead imposed by application software, the
- decompressor requires approximately 100K of system memory (about 128K
- more for 16-bit color, about 256K more for 24-bit color). Approximately 200K of application memory are needed for each open 320x240 movie.
-
- Although error handling is application-dependent, movies for which there
- is not adequate application memory will normally be displayed as
- blank (all-white) frames until sufficient memory is available. You can
- make memory available by closing applications, closing windows, or
- closing some of the other movies currently open under the same
- application. Note that leaving a blank movie open may cause the
- display rate of other movies to be impaired.
-
- You can increase the number of movies that can be open simultaneously
- by increasing the amount of memory available to the application:
- before launching the application in question, select its icon, then use
- the Finder's "Get Info" command. NOTE: Problems may occur if
- application partitions are increased to the point that 200K-300K of
- memory is not available for growth of the system heap.
-
-
- COMPRESSOR NOTES
- ----------------
- Videos compressed with this codec cannot be decompressed by R3.1
- codecs.
-
- We suggest you set the KEYFRAME INTERVAL to 4 when compressing movies.
-
- If your application supports data rate constraint by passing a target
- data rate to the codec, the codec will automatically vary the quality
- of the compressed image to achieve the specified data rate. In this case,
- any user-specified quality information will be ignored. For example, in
- the ConvertToMovie application, checking the "Limit data rate to..." box
- will cause the spatial quality slider to be ignored; if the box is left
- unchecked, the spatial quality slider value will be used to determine image
- quality.
-
- We suggest that you SET BOTH THE HEIGHT AND WIDTH OF THE MOVIE TO
- BE COMPRESSED TO MULTIPLES OF 4. The Macintosh version of the Indeo codec
- will allow you to compress movies of arbitrary dimensions. However, if the
- dimensions are not multiples of 4 the playback rate will be affected; furthermore,
- there is no guarantee that such movies will be portable to other environments
- (e.g., QuickTime for Windows or Video for Windows).
-
- The R3.2 compressor outputs a version string after each keyframe. To
- find the version of the compressor used to produce a video, search
- (e.g., with the MPW Shell's 'Search' command) the movie file for a string
- beginning with the characters "Ver ".
-
-
- MAJOR DIFFERENCES FROM V3.22.21.02
- ----------------------------------
- The decompressor has been optimized, resulting in higher frame rates.
-
-
- MAJOR DIFFERENCES FROM V3.22.21.01 AND V3.22.21.00
- --------------------------------------------------
- (V3.22.21.01 was identical to V3.22.21.00 except that it contained
- a fix for a decompressor bug that caused incorrect display for videos
- with width < 160.)
-
- • Both 'iv32' and 'IV32' are recognized as Indeo R3.2 movie formats.
- This is for compatibility with some Video for Windows to QuickTime
- translators that produce lower case format signatures.
-
- • Memory allocation for large decompressor tables is handled more intelligently.
-
- • Playback has been sped up for various depths of gray-level output.
-
- =====================================
- Intel Raw Video codec -- V1.10.20.02
- =====================================
-
- These notes describe the Intel Raw Video codec, a compressor/decompressor
- for YVU9 format video in Apple's QuickTime 1.6.1 and 2.0
- video environments.
-
- YVU9 is the format in which video is captured by the Intel Smart Video
- Recorder. In YVU space, a pixel is represented by one luminance (Y) value
- and two chrominance (U and V) values. In YVU9 format, the chrominance
- values are subsampled: a single UV pair is used to represent the
- chrominance of an entire 4x4 block of pixels. Since Y, U, and V components
- are each stored as 8-bit numbers, the color subsampling results in an
- average 9 bits per pixel. Because the human eye is more sensitive to
- luminance than to chrominance, the perceived loss of information due
- to subsampling is minimal.
-
- By providing the capability to read movie files captured with the Intel
- Smart Video Recorder, the Intel Raw Video Codec provides a path to the
- Indeo Video codec, which performs spatial and temporal compression
- resulting in much smaller files.
-
- Follow the same installation procedure as for the Indeo Video codec.
- This codec will appear in compressor selection menus as "Intel Raw".
-
-
- DIFFERENCES FROM V1.10.20.00
- ----------------------------
- There are no functional differences from the previous version of this codec.
- The codec has been rebuilt with the an updated release of the compiler and with
- the most current QuickTime (2.0) header files.
-
-
- MAJOR DIFFERENCES FROM V3.10.601
- --------------------------------
- • The compressor now assigns 24-bit format to the output stream instead
- of 32-bit (for portability to the Video for Windows environment).
-
- • The compressor now appends a version string to the end of the binary data
- for each frame. To find the version of the compressor used to produce a
- video, search (e.g., with the MPW Shell's 'Search' command) the movie file
- for a string beginning with the characters "Ver ".
-
- • The performance of 16- and 24-bit decompression has been improved.
-
- • Internal change: spooling functions are now handled correctly (although
- data spooling itself is not supported.
-
- • Internal change: the codecGetCompressedImageSize codec function has been
- implemented.
-
-
- ===================================
- SUGGESTIONS AND PROBLEM REPORTING
- ===================================
- Please communicate problem reports and suggestions to:
-
- Intel Technical Support
- Within USA: (800) 843-4481
- Outside USA: (503) 696-7003
- Fax: (503) 696-6067
-
- Ask for Indeo Video support when connected.
-
- Please be prepared to provide detailed information about your hardware
- and software configuration when reporting a problem.
-