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- Indeo« Video Version 5.06 and Indeo Audio Software Version 2.5
-
- Release Notes
-
-
- Overview
-
- The Indeo« video 5.06 and Indeo audio software 2.5 release notes
- contain the following sections:
-
- * Introduction
- * Getting Started
- * Enhancements in Indeo video 5.0
- * Features of Indeo audio software 2.5
- * Progressive Download
- * Other Features of Indeo video 5.0
- * Installation Notes
- * Uninstallation
- * Major changes in Indeo video 5.06
- * Known Limitations and Problems
-
- Introduction
-
- Intel is pleased to introduce the Indeo video 5.0 and Indeo audio
- software 2.5. These release notes describe the features of Indeo
- audio software, Indeo video, the enhancements included in version
- 5.0, and instructions on how to download and install the new
- version.
-
- Getting Started
-
- The Indeo video 5.06 codec, documentation, sample source code,
- technical information, and access to technical support are available
- on this site:
-
- http://developer.intel.com/ial/indeo/video/index.htm
-
- You can obtain all of the documents mentioned in these Release Notes
- from the documentation page:
-
- http://developer.intel.com/ial/indeo/video/doc.htm
-
- The Indeo audio software 2.5 codec, documentation, technical
- information, and access to technical support are available on this
- site:
-
- http://developer.intel.com/ial/indeo/audio/index.htm.
-
- You can obtain all of the documents mentioned in these release notes
- from the documentation page:
-
- http://developer.intel.com/ial/indeo/audio/doc.htm.
-
- You can download the latest drivers from the Indeo drivers page:
-
- http://developer.intel.com/ial/indeo/video/driver.htm.
-
- Enhancements in Indeo video 5.0
-
- Indeo video version 5.0 supports virtually all of the features of
- the previous 4.x releases, but performs better in each category.
- Enhancements include:
-
- * A new wavelet compression algorithm that greatly improves
- visual quality.
- * Better compression at all levels of video quality than previous
- generation codecs.
- * Playback performance enhancements for both MMX(TM) technology and
- the Pentium« II processor, including smoother, interpolated
- "zoom by 2" playback on processors with MMX technology.
- * Progressive Download, a feature enabled in Microsoft
- DirectShow* architecture and supported by the new Internet
- Explorer* 4.0 browser, which allows high-quality scalable video
- for the Internet and intranets. This feature can be used with
- Netscape Navigator* 3.x, Netscape Communicator* 4.x, and
- Internet Explorer 3.x browsers as well by installing the Indeo
- video 5.0 plug-in.
- * Indeo video version 5.06 supports encoding with Microsoft
- DirectShow.
-
- Features of Indeo audio software 2.5
-
- Indeo audio software 2.5 is the primary audio compression codec used
- by the Indeo Video 5.0 Progressive Download Publisher (see
- http://developer.intel.com/ial/indeo/video/web.htm). This release
- includes the following features:
-
- 8:1 Compression
-
- Indeo audio software compresses 16-bit raw PCM audio by a factor of
- eight. For example, a one-second CD-quality audio (16-bit PCM, 44.1
- kHz sample rate, stereo) clip requires 176,400 bytes of storage.
- After compression, it requires 22,050 bytes of storage.
-
- Support for Standard Multimedia Sample Rates
-
- Sample rates of 8,000 Hz, 11025 Hz, 22050 Hz, and 44,100 Hz are
- supported. It is possible to convert to a lower sample rate while
- compressing an audio clip with Indeo audio software. For example,
- the one-second CD-quality audio clip mentioned above could be
- converted to 8,000 Hz sample rate during compression. In this case
- the compressed clip would require 4,000 bytes of storage. Note,
- however, that decreasing the sample rate can dramatically reduce the
- audio quality.
-
- Support for Stereo and Mono
-
- Both stereo (two channel) and mono (one channel) compression and
- playback are supported. Mono requires half the storage space of
- stereo. For example, if the one-second CD-quality stereo audio clip
- mentioned above is compressed as mono at 8,000 Hz sample rate, the
- resulting compressed audio clip would require only 2,000 bytes of
- storage! However, note that compressing stereo audio as mono can
- dramatically reduce the audio quality.
-
- For more information
-
- Read more about these features and how to use them at the Indeo
- audio software home page:
-
- http://developer.intel.com/ial/indeo/audio/index.htm.
-
- Progressive Download
-
- Indeo video 5.0 scalability allows Internet videos to be downloaded
- progressively. Video files on a Web server can be created in such a
- way that lower resolution, lower frame rate video can be viewed
- almost immediately, allowing the user to quickly decide if they wish
- to continue viewing the video or download it to their hard drive.
- Given more download time, and/or a faster Web connection, a
- Progressive Download file will continuously improve in both quality
- and frame rate, until all of the video data is downloaded from the
- Web server to the client PC.
-
- This gives Web authors the ability to create high-quality video
- content, and lets viewers use fast connections and/or longer
- download times to get the highest quality video on their PCs. Those
- connected to the Web at slower speeds, however, can still access
- video of good quality without unreasonable waits and download times.
-
- To create a Progressive Download file a video producer first creates
- a standard .AVI file using a video editing/compression tool such as
- Adobe Premiere* or Asymetrix Digital Video Producer*. When creating
- the file, Indeo video's "Scalability" compression option must be
- turned ON.
-
- The file is then modified using the Intel Indeo video 5.0
- progressive download publisher tool. This tool opens and re-saves
- the file, creating the progressive download file structure and
- optionally compressing the audio into Intel's new Indeo audio format
- as it does so. To learn more about this process read about how to
- use the Indeo video 5.0 progressive download publisher tool.
-
- Other Features of Indeo Video 5.0
-
- The Indeo video 5.0 release includes most of the features in
- previous releases of Indeo video:
-
- Video access protection
- Many multimedia developers are concerned about the illegal
- distribution of their copyrighted material. The Indeo video 5.0
- codec helps prevent misuse of video clips by using access keys
- (numeric passwords that can be inserted into a video clip during
- compression). Applications need the password to play video clips
- encoded with an access key.
-
- Key frame flexibility
- The Indeo video 5.0 codec offers control and flexibility over the
- use of key frames. The key frame interval is unrestricted, allowing
- a variety of values:
-
- * 0 Only the first frame in the file is a keyframe. No other
- key frames occur in the file.
- * 1 Every frame in the file is a key frame.
- * 2, 3, ... n Every nth frame in the file is a key. The value
- of n has no upper limit.
-
- Along with this flexibility in key frame intervals, Indeo video 5.0
- allows for non-periodic key frames. This means that during editing,
- the encoding application can tell the Indeo video 5.0 codec to place
- a key frame at any location. Video producers can then specify access
- points anywhere within a video sequence, or better control video
- quality by placing key frames on scene-change boundaries.
-
- Application interactivity
- Indeo video 5.0 incorporates features that make it possible to
- include video in interactive multimedia applications and games,
- challenging the traditional notion of video as having a fixed size
- and rectangular shape.
-
- Transparency
- For years, the movie and television industries have used the
- technique of chroma-keying (sometimes called blue-screening) to
- place foreground objects over synthesized backgrounds. One example
- of chroma-keying is when TV meteorologists appear to be standing in
- front of a wall-sized map, when in fact, they are standing in front
- of a blue wall. Chroma-key circuitry electronically separates the
- foreground pixels representing the meteorologist from the blue
- background pixels and overlays the meteorologist on an
- electronically-generated weather map. The Indeo video codec supports
- this type of transparency. During encoding, a compression
- application can send information to the codec describing a color or
- range of colors that represent a transparent background (such as the
- blue wall in the meteorologist example). Indeo video then analyzes
- each frame, separates the background pixels from the foreground, and
- makes the background pixels transparent, encoding only the
- foreground objects as compressed video.
-
- Indeo video 5.0's transparency encoding is flexible, allowing for
- arbitrarily-shaped multiple foreground objects. Foreground objects
- can also move from frame to frame, allowing you to create what might
- be called video sprites. Video sprites are transparent video objects
- that can be overlaid onto other video or bitmap backgrounds. During
- playback, foreground objects can be composited dynamically over
- different backgrounds. For example, the meteorologist can appear
- over different weather maps on PCs with sufficiently powerful
- Pentium processors. A foreground object can even appear over another
- video stream, as in the case of a tornado.
-
- Local decode
- Sometimes an application needs to display only part of a decoded
- video image. For example, in a game, you might look through the
- periscope of a submarine where your view is limited to a small
- subset of the entire image. This subset changes as the video plays,
- depending on where the periscope is rotated.
-
- In this case, much of the source image does not need to be
- displayed, and it's preferable not to waste processor resources
- decoding it. Indeo video 5.0 provides this capability through a
- feature called local decode.
-
- The playback application can tell Indeo video 5.0 to decode only a
- rectangular subregion, called the view port, from the source video
- image. The minimum possible size of the local decode viewport is
- defined during compression, but the display size and location of the
- viewport can be changed dynamically during playback.
-
- Real-time video effects
- The brightness, contrast, and color saturation of Indeo video 5.0
- files can be modified interactively during playback. This makes it
- possible to simulate different lighting conditions, or to tailor the
- appearance of the video playback to particular graphics environments
- and preferences.
-
- Installation Notes
-
- 1.To obtain the decode only drivers for:
-
- * Indeo video 5.06 codec
- * Indeo audio codec
- * Indeo Video 3.x and 4.x codecs
- * Progressive Download Plug-in and
- * DirectShow filter,
-
- select on the Download Area page the Playback only option
- (Iv5play.exe.)
-
- 2. To obtain both the decode and encode drivers for:
-
- * Indeo video 5.06 codec
- * Indeo audio codec
- * Indeo Video 3.x and 4.x codecs
- * Progressive Download Plug-in and
- * DirectShow filter,
-
- select on the Download Area page the Developer install option
- (Iv5devl.exe.)
-
- Note: Iv5devl.exe also allows the option to install the Indeo
- installation source code and YVU9 codec.
-
- 3.To obtain the Indeo video 5.0 progressive download publisher tool
- and its components, select Indeo video 5.0 Progressive Download
- Publisher on the Download page.
-
- 4.Complete the registration pages.
-
- 5.Download the executable, and execute it once the download is
- complete.
-
- NOTE: The Indeo video 5.06 codec is a 32-bit driver that supports
- Microsoft Windows* 95, Windows 98, and Windows NT*. Windows 3.1
- support is not available.
-
- UnInstall
-
- To UnInstall the Playback Only:
-
- 1. From the system tray, click Start, select Run.
- 2. Type in the command, regsvr32 -u "driver name", or from system
- tray, click Start, open Programs and select the MSDOS Command
- Prompt. Change the directory to C:\WINDOWS\SYSTEM (Windows 95)
- or C:\WINNT\SYSTEM32 (Windows NT 4.0) and type in regsvr32 -u
- "driver name."
- 3. Hit return. This will unregister the codec.
- 4. After unregistering the codec, the compressed files cannot be
- played back.
- 5. Go to C:\WINDOWS\SYSTEM (Windows 95) or C:\WINNT\SYSTEM32
- (Windows NT 4.0) and manually remove the driver files.
- 6. Open the Registry, and go to this location:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs
- 7. Search for the value <WINSYSDIR\ir41_32.ax. If the value is
- exactly equal to 1, then you may, optionally, delete the file
- <winsysdir\iacenc.dll (Warning: If the value under this
- registry item is greater than 1, and if you remove the file, it
- may break other software you have installed on your machine.)
- 8. Remove the key from the registry:
-
- Note: The driver names are ir50_32.dll, iac25_32.ax and ivfsrc.ax
-
- To UnInstall the Developers version:
-
- 1. Go to Control Panel and select the "Add/Remove Programs" icon.
- 2. Highlight Indeo Software and then select the Add/Remove button.
- 3. Select "Yes" when prompted to confirm your uninstall selection.
- 4. All of the components installed onto your system will be
- removed. Files that were previously on your system will not be
- removed.
-
- To UnInstall the Progressive Download Publisher Tool:
-
- 1. Explore C:\Program Files\Intel\Indeo. Highlight and delete the
- folder in which the Web Publisher tool was installed (default
- is the Progressive Download Publisher folder), or delete the
- tool from the destination location selected during
- installation. In this folder the following files should be
- listed: ivi5pub.exe, web.htm, fig1.gif, fig2.gif, fig3.gif and
- fig4.gif.
- 2. From the system tray, click Start, select Run. (Note: This is
- an optional step to remove the iac25_32.ax driver. Doing so can
- possibly affect other software that might depend on the audio
- codec.)
- 3. Type in the command, regsvr32 -u iac25_32.ax, or from system
- tray, click Start, open Programs and select the MSDOS Command
- Prompt. Change the directory to C:\WINDOWS\SYSTEM (Windows 95)
- or C:\WINNT\SYSTEM32 (Windows NT 4.0) and type in regsvr32 -u
- iac25_32.ax.
- 4. Hit Enter. This will unregister the codec.
- 5. Go to C:\WINDOWS\SYSTEM (Windows 95) or C:\WINNT\SYSTEM32
- (Windows NT 4.0) and manually remove both the iace25_32.ax and
- iacenc.dll drivers from this directory.
- 6. Launch regedit. Look for the key:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs
- search for the value <WINSYSDIR\iacenc.dll. If the value is
- exactly equal to 1, then You may, optionally, delete the file
- <winsysdir\iacenc.dll endif; WARNING: if the value under this
- registry item is greater than 1, and if you remove the file, it
- may break other software you have installed on your machine.
- 7. Remove the key from the registry:
- SOFTWARE\\Classes\\CLSID\\{AC7E3750-516E-11D1-9683-00AA00A5F56D}
-
- Major Changes in Indeo video 5.06
-
- Indeo video 5.06 contains the following changes relative to previous
- releases of Indeo video 5.0x:
-
- * Faster Encode Speed: The offline encoder will operate up to
- 30% faster when compared to previous versions of Indeo video
- 5.0. The amount of improvement will vary depending on the
- video clip and compression settings chosen.
- * Playback Performance Problems Addressed: Previous releases of
- Indeo video 5.0 have exhibited playback performance problems
- when running on certain hardware configurations. These
- problems were typically associated with machines using
- processors running in excess of 333Mhz. Indeo video 5.06 fixes
- bugs associated with these hardware-specific performance
- issues.
- * Microsoft DirectShow* Related Synchronization Issues Resolved:
- Under some circumstances, certain versions of Microsoft
- DirectShow may lose synchronization when playing back video
- clips using previous versions of Indeo video 5.0. This problem
- appears to the viewer as the video momentarily (and repeatedly)
- playing back at a much higher or lower speed than normal,
- causing the video to be out of synch with the audio. This
- problem is associated with the rendering filter in certain
- builds of the DirectShow runtime such as versions 5.0 and 5.2.
- With these versions of DirectShow the problem can be triggered
- when using Indeo video 5.0 with video display adapters using
- YUV hardware color conversion (such as AGP display cards with
- YUY2 support). Indeo video 5.06 implements a workaround to this
- problem that actively forces the video playback to remain in
- synch with the audio whenever it senses that DirectShow is not
- correctly maintaining synchronization. This workaround has no
- effect when DirectShow correctly maintains synchronization on
- it's own (such as with DirectShow 5.1 or when not using YUV
- hardware color conversion).
- * Indeo software converted to use UNICODE strings throughout:
- The Indeo software is currently only available in an English
- version. This change facilitates possible future translations
- of the Indeo software to other languages that require
- multi-byte characters.
- * Installation scripts now support multiple installed versions of
- Netscape Navigator: Previous releases of the Indeo video 5.0
- software would only install the Indeo progressive download
- plug-in software in one copy of Netscape Navigator on a
- system. The copy of Netscape Navigator that was most recently
- installed would be enabled to use the Indeo software, but other
- copies were not. The current release will search for
- additional copies of Navigator, and install the Indeo
- progressive download plug-in software on up to three different
- copies of Navigator on a single machine.
-
- Known Limitations and Problems
-
- Iv5devl.exe
-
- 1. Developers: The Iv5devl.exe is set to have the Indeo video 5.0
- quick compressor driver (ir50_qc.dll) installed before the
- Indeo video 5.06 driver (ir50_32.dll). If the Indeo video 5.06
- driver is installed before the Indeo video 5.0 quick
- compressor, an option to reboot your system will appear after
- the second installation of Iv5devl.exe on Windows NT 4.0 or on
- Windows 95 with Microsoft DirectShow installed. If making
- changes to the installation executable with the Indeo Software
- Installation Code, ensure that the Indeo video 5.06 driver
- follows the installation of the Indeo video 5.0 quick
- compressor, to avoid the reboot option.
-
- Installation
-
- Note: The install of the Indeo video 5.0 Progressive Download
- Plug-in places the plug-in in the plugins directories of up to three
- copies of Netscape Navigator, as well as in the plugins directory of
- Microsoft Internet Explorer 3.0.
-
- 1. The Indeo video 5.0 Progressive Download Publisher install is
- not supported on Windows NT 3.51 systems.
-
- Indeo video 5.06 Codec
-
- There are several limitations associated with the Indeo video 5.06
- codec.
-
- 1. The Indeo video 5.06 compression in Microsoft ActiveMovie* 1.0
- is not supported.
- 2. Indeo video 5.06 compressions may, under some circumstances,
- result in slightly higher data rates than requested when using
- bitrate control. For more information about these cases,
- please consult the document at:
- http://developer.intel.com/ial/indeo/video/compress.htm.
-
- Indeo audio software 2.5
-
- 1. Many of the known audio and video players have the capability
- of moving an arbitrary distance forward or backward within a
- stream and resuming play. This is usually accomplished through
- the player's GUI controls (for example fast forward or rewind
- buttons, slider bar, etc.). Due to limitations of the
- DirectShow architecture, there may be a short period of silence
- before playing resumes.
- 2. The "Internal Name" and "Original Filename" in the iac25_32.ax
- file properties erroneously show up as "IAC2.ACM" rather than
- "iac25_32.ax". The file properties of iac25_32.ax are displayed
- by right-clicking on the file name in Explorer and selecting
- the "Version" tab. This problem is cosmetic and does not affect
- the performance of the codec.
-
- DirectShow Filter
-
- Note: Internet Explorer 4.0 is required on the system in order for
- the Progressive Download DirectShow filter to work.
-
- 1. The dial-up connection may terminate the connection
- prematurely. The work-around is to establish a dial-up
- connection before the browser is loaded, disable or increase
- the line activity timeout, or continue using the browser while
- downloading. The line activity time out can be adjusted under
- the connection tab of the Internet Properties.
- 2. Sometimes the Save As option may not be enabled when
- downloading a clip over a LAN or other high-speed link.
- 3. The browser STOP button does not stop the download. You need to
- leave the page or save the progressive download media clip to
- stop the download.
- 4. When attempting to save a progressive download media clip
- before the file is fully downloaded, the operation may
- sometimes fail. If this occurs, you can try refreshing the page
- and saving the file again.
- 5. Heavy network activity using a slow connection speed while
- downloading or saving progressive download media clips may
- cause truncated or corrupted .AVI files.
-
- Progressive Download Plug-in
-
- Note: The Progressive Download Plug-in is designed for Netscape 3.x
- or 4.x browsers and Microsoft Internet Explorer 3.x. It is not
- supported by Netscape Navigator 2.x or Microsoft Internet Explorer
- 2.x.
-
- 1. The size of the progressive download media clips in HTML source
- includes the control panel. The work around is add 12 to the
- width and 64 to the height to compensate for the control panel.
- 2. If ActiveMovie* 1.0 or Microsoft DirectShow is installed the
- plug-in will not work with Microsoft Internet Explorer 3.x. If
- either ActiveMovie 1.0 or Microsoft DirectShow is installed it
- is recommended upgrading to Microsoft Internet Explorer 4.0.
-
- Progressive Download Publisher
-
- 1. The progressive download conversion options are not always
- re-initialized when opening more than one progressive download
- media clip within the same instance of the tool.
-
-
-
- *All other brands and names are property of their respective owners.
-
- ⌐ 1998 Intel Corporation
-