Indeo

Filename extension| `ivf`
Internet media type| `video/x-ivf, video/x-indeo`
Developed by| Intel Architecture Labs
Initial release| November 1992; 33 years ago (1992-11)
Latest release|

5.11

Type of format| compressed video
Contained by| AVI
Extended from| DVI

Indeo Video (commonly known now simply as "Indeo") is a family of audio and video formats and codecs first released in 1992, and designed for real-time video playback on desktop CPUs. While its original version was related to Intel's DVI video stream format, a hardware-only codec for the compression of television-quality video onto compact discs, Indeo was distinguished by being one of the first codecs allowing full-speed video playback without using hardware acceleration. Also unlike Cinepak and TrueMotion S, the compression used the same Y'CbCr 4:2:0 colorspace as the ITU's H.261 and ISO's MPEG-1. Indeo use was free of charge[1] to allow for broadest usage.

## Contents

* 1 History
* 2 Formats
* 2.1 Indeo 2
* 2.2 Indeo Video 3
* 2.3 Indeo Video Interactive
* 2.4 Indeo Audio Coder
* 2.5 Indeo Version 5
* 3 Implementations
* 3.1 Security advisory
* 4 References
* 5 External links
* 6 Literature

## History

During the development of what became the P5 Pentium microprocessor, the Intel Architecture Labs implemented one of the first, and at the time highest-quality, software-only video codecs, which was marketed as "Indeo Video". It has been developed since the 1980s based on the hardware-only Digital Video Interactive (DVI) which was previously developed by General Electric.[2] Indeo was first released in 1992 along with Microsoft's Video for Windows platform.[3] At its public introduction, it was the only video codec supported in both the Microsoft (Video for Windows) and Apple Computer's QuickTime software environments, as well as by IBM's software systems of the day. It was sold to Ligos Corporation in 2000.

Intel produced several different versions of the codec between 1993 and 2000, based on very different underlying mathematics and having different features.

Though Indeo saw significant usage in the mid-1990s, it remained proprietary. Intel slowed development and stopped active marketing, and it was quickly surpassed in popularity by the rise of MPEG codecs and others, as processors became more powerful and its optimization for Intel's chips less important. Indeo still saw some use in video game cutscene videos, such as in 1998's Software:Police Quest: SWAT 2.

## Formats

The original format was designed for real-time playback on low-end Intel CPUs (i386 and i486), optionally supported by specialized decoder hardware (for example, Intel i750 on an Intel ActionMedia II expansion card). Decoding complexity was significantly lower than with contemporary MPEG codecs (H.261, MPEG-1 Part 2).[4]

The codec was highly asymmetrical, meaning that it took much more computation to encode a video stream than to decode it. Intel's ProShare video conferencing system took advantage of this, using hardware acceleration to encode the stream (and thus requiring an add-in card), but allowing the stream to be displayed on any personal computer.

### Indeo 2

Indeo 2, previously known as Real-Time Video 2, works by delta coding pixels line by line, either against the temporally or spatially directly preceding line, coupled with static Huffman coding.[5] Indeo 2.1 was included in the 1992 Video for Windows 1.0 add-on for Windows 3.1, which required at least a 386SX processor.

### Indeo Video 3

Indeo Video 3 is a traditional DCT-based transform coding format designed for video playback from CD-ROM that is very similar to the competing Cinepak. It uses chroma subsampling, delta encoding, vector quantization, run-length encoding and motion compensation (inter-frame coding) with a recommended key-frame interval of 4 and has distinctly asymmetric runtime characteristics.[6][3]

### Indeo Video Interactive

Indeo Video Interactive had greater computational complexity and was aimed at video game developers.[7] It was based on wavelet transforms[8] and included novel features such as chroma-keyed transparency and hot spot support. Initially, there was no support for Apple systems.[9] Two variants of this technology were produced: Indeo Video 4 and 5. The format was never officially documented but later reverse engineered to allow for third-party decoders.[10]

### Indeo Audio Coder

Indeo Audio Coder is a transform coding format based on the modified discrete cosine transform (MDCT).[11]

### Indeo Version 5

Proprietary bitstream encoding for video, originally developed by Intel. The technology was sold in 2000 to Ligos Corporation. John McGowan states that Indeo 5 employs a wavelet algorithm and other encoding features; its predecessor Indeo 4 employs a presumably similar "hybrid wavelet algorithm".[12] Windows implementations of Indeo have been distributed by Ligos. Apple distributed Mac versions for "classic" operating systems through OS 9, but there is no MacOS support for Mac OS X.

## Implementations

Official Indeo 5 decoders exist for Microsoft Windows, the classic Mac OS, BeOS R5 and the XAnim player on Unix. Reverse engineered decoders for versions 2, 3, 4 and 5 were introduced in FFmpeg between 2003 and 2011.[13] Indeo version 3 (IV31 and IV32), 4 (IV41) and 5 (IV50) are supported by MPlayer[14] and XAnim. Version 5.11 is freeware[15] and may be used on all 32-bit versions of Windows prior to Vista. Version 5.2 has been created for XP and is available for purchase from the official website[16] for use only with Windows 95, 98, ME, NT, 2000 and XP. This includes support for Indeo Video 4.5 and Indeo Audio 2.5 codecs but the version 3.2 video codec has been removed since the original release of Indeo XP for Windows. Although Indeo video is not officially supported by Windows Vista and Windows 7, simply entering the following into the command prompt might enable the playback of Indeo encoded video: `regsvr32 ir50_32.dll`[17]

### Security advisory

The Microsoft Windows implementation of the Indeo codec contains several security vulnerabilities, and one should not play Indeo videos from untrusted sources. Microsoft tried to remove them in Windows XP SP1 but had to release a hotfix to add it back.[18] The codec was originally licensed from Intel, and Microsoft likely do not have the source code that would be required to fix the vulnerabilities. On fully patched systems and all Windows Vista and later systems, the Indeo codec is partially disabled in most circumstances.[19]

## References

1. ↑ "Indeo® Video 5 Technical Overview(Archived)". https://siggraph.org/education/materials/HyperGraph/video/codecs/indeo_v5/overview.htm.
2. ↑ Boudier, Thomas; Shotton, David M. (1999-04-01). "Video on the Internet: An Introduction to the Digital Encoding, Compression, and Transmission of Moving Image Data". Journal of Structural Biology 125 (2–3): 133–155. doi:10.1006/jsbi.1999.4097. ISSN 1047-8477. PMID 10222270.
3. ↑ 3.0 3.1 "Codec Central – Indeo Codec". 1998. https://siggraph.org/education/materials/HyperGraph/video/codecs/Indeo.html.
4. ↑ "Indeo Video Codec, Version 3". 2011-12-05. https://www.loc.gov/preservation/digital/formats/fdd/fdd000065.shtml.
5. ↑ "Indeo 2". 2018-01-24. https://wiki.multimedia.cx/index.php/Indeo_2.
6. ↑ "Indeo 3". 2018-01-24. https://wiki.multimedia.cx/index.php/Indeo_3.
7. ↑ Mustafa, Suleiman; Xiao, Hannan (December 2015). "Comparison of Cinepak, Intel, Microsoft video and indeo codec for video compression". International Journal of Multimedia & Its Applications 7 (6): 01–12. doi:10.5121/ijma.2015.7601.
8. ↑ "Indeo Video Interactive". http://www.synthetic-ap.com/qt/ivi.html.
9. ↑ "Codec Central – Indeo Codec". 1998. https://siggraph.org/education/materials/HyperGraph/video/codecs/IVI.html.
10. ↑ "Indeo 4". 2018-01-24. https://wiki.multimedia.cx/index.php/Indeo_4.
11. ↑ "Imc: Make IMDCT support stereo output (34271cab) · Commits · libav / Libav". 2 June 2012. https://code.videolan.org/libav/libav/commit/34271cabacb20f24ad07bff818e3447330cdd851.
12. ↑ "Indeo Video Codec, Version 5". 2012-03-01. https://www.loc.gov/preservation/digital/formats/fdd/fdd000085.shtml.
13. ↑ "git.videolan.org Git - ffmpeg.git/blob - Changelog". https://git.videolan.org/?p=ffmpeg.git;f=Changelog;hb=HEAD.
14. ↑ "Codec Status Table - MPlayer - the Movie Player". http://www.mplayerhq.hu/DOCS/codecs-status.html.
15. ↑ "Free Download Ligos Indeo Codec 5.11". http://www.free-codecs.com/download/indeo_codec.htm.
16. ↑ "Ligos Corporation » Indeo". http://ligos.com/index.php/home/products/indeo/.
17. ↑ "Indeo 5.x problem with Vista". http://forum.videohelp.com/threads/266794-Indeo-5-x-problem-with-Vista?p=1660521&viewfull=1#post1660521.
18. ↑ "Game stops responding (hangs) or quits unexpectedly when introductory video clip is played". 2004-05-20. http://support.microsoft.com/kb/327979.
19. ↑ "Microsoft Security Advisory 954157 – Security Enhancements for the Indeo Codec". 2009-12-08. https://learn.microsoft.com/en-us/security-updates/securityadvisories/2009/954157.

## External links

* Ligos Indeo Codecs – Ligos Corporation (archived)
* Indeo Support (archived)

## Literature

* Michael Keith (Intel) (1993). "Digest of Papers. Compcon Spring". IEEE International Computer Conference (Compcon). San Francisco, CA, USA: IEEE Computer Society Press. pp. 509–513. doi:10.1109/cmpcon.1993.289725. ISBN 0-8186-3400-6.

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Data compression software

Archivers with
compression
(comparison)|

| Free software|

* 7-Zip
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* FreeArc
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* KGB Archiver
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* PeaZip
* tar
* XAD (decompression only)
* Xarchiver
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Freeware|

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Commercial|

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Non-archiving
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For code|

UPX

Audio
compression
(comparison)|

| Lossy|

* Fraunhofer FDK AAC
* Nero AAC Codec
* Freeware Advanced Audio Coder (FAAC)
* Helix DNA Producer
* l3enc
* LAME
* TooLAME
* libavcodec
* libcelt
* libopus
* libspeex
* Musepack
* libvorbis
* Windows Media Encoder

|

Lossless|

* ALAC
* FLAC
* libavcodec
* Monkey's Audio
* mp4als
* OptimFROG
* Shorten
* TTA (True Audio)
* WavPack

Video
compression
(comparison)|

| Lossy|

| MPEG-4 ASP|

* 3ivx
* DivX
* Nero Digital
* FFmpeg
* HDX4
* Xvid

|

H.264 /
MPEG-4 AVC|

* CoreAVC
* Blu-code
* DivX
* FFmpeg
* Nero Digital
* OpenH264
* QuickTime
* x264

HEVC|

* DivX
* x265

Others|

* CineForm
* Cinepak
* Daala
* DNxHD
* Helix DNA Producer
* Indeo
* libavcodec
* Schrödinger (Dirac)
* SBC
* Sorenson
* VP7
* libtheora
* libvpx
* Windows Media Encoder

Lossless|

* FFV1
* Huffyuv
* Lagarith
* MSU Lossless
* YULS

* See also: compression methods and compression formats

* v
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Multimedia compression and container formats

Video
compression|

| ISO, IEC, MPEG|

* MJPEG
* Motion JPEG 2000
* MPEG-1
* MPEG-2
* Part 2
* MPEG-4
* Part 2 / ASP
* Part 10 / AVC
* MPEG-H
* Part 2 / HEVC
* MPEG-I
* Part 3 / VVC

|

ITU-T, VCEG|

* H.120
* DCT
* H.261
* H.262
* H.263
* H.264 / AVC
* H.265 / HEVC
* H.266 / VVC
* DV

SMPTE|

* VC-1
* VC-2
* VC-3
* VC-5

TrueMotion|

* TrueMotion S
* DCT
* VP3
* VP6
* VP7
* VP8
* VP9
* AV1

Others|

* Apple Video
* AVS
* Bink
* Cinepak
* Daala
* DVI
* EVC
* FFV1
* Huffyuv
* Indeo
* Lagarith
* Microsoft Video 1
* MSU Lossless
* OMS Video
* Pixlet
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* ProRes 4444
* QuickTime
* Animation
* Graphics
* RealVideo
* RTVideo
* SheerVideo
* Smacker
* Sorenson Video/Spark
* Theora
* Thor
* WMV
* XEB
* YULS

Audio
compression|

| ISO, IEC, MPEG|

* MPEG-1 Layer II
* Multichannel
* MPEG-1 Layer I
* MPEG-1 Layer III (MP3)
* AAC
* HE-AAC
* AAC-LD
* MPEG Surround
* MPEG-4 ALS
* MPEG-4 SLS
* MPEG-4 DST
* MPEG-4 HVXC
* MPEG-4 CELP
* MPEG-D USAC
* MPEG-H 3D Audio

|

ITU-T|

* G.711
* A-law
* µ-law
* G.718
* G.719
* G.722
* G.722.1
* G.722.2
* G.723
* G.723.1
* G.726
* G.728
* G.729
* G.729.1

IETF|

* Opus
* iLBC
* Speex
* Vorbis

3GPP|

* AMR
* AMR-WB
* AMR-WB+
* EVRC
* EVRC-B
* EVS
* GSM-HR
* GSM-FR
* GSM-EFR

ETSI|

* AC-3
* AC-4
* DTS

Others|

* ACELP
* ALAC
* Asao
* ATRAC
* AVS
* CELT
* Codec 2
* DRA
* FLAC
* iSAC
* Monkey's Audio
* TTA
* True Audio
* MT9
* Musepack
* OptimFROG
* OSQ
* QCELP
* RCELP
* RealAudio
* RTAudio
* SD2
* SHN
* SILK
* Siren
* SMV
* SVOPC
* TwinVQ
* VMR-WB
* VSELP
* WavPack
* WMA
* MQA
* aptX
* aptX HD
* aptX Low Latency
* aptX Adaptive
* LDAC
* LHDC
* LLAC

Image
compression|

| IEC, ISO,
IETF, W3C,
ITU-T, JPEG|

* CCITT Group 4
* DCT
* HEIF
* HEVC
* JPEG
* JPEG XR
* JPEG XT
* TIFF/EP
* Arithmetic
* JBIG
* JBIG2
* JPEG-LS
* JPEG 2000
* LZ
* GIF
* PNG
* TIFF
* TIFF/IT

|

Others|

* APNG
* BPG
* DjVu
* EXR
* FLIF
* ICER
* MNG
* PGF
* QTVR
* WBMP
* WebP

Containers|

| ISO, IEC|

* MPEG-ES
* MPEG-PES
* MPEG-PS
* MPEG-TS
* ISO base media file format
* MPEG-4 Part 14 (MP4)
* Motion JPEG 2000
* MPEG-21 Part 9
* MPEG media transport

|

ITU-T|

* H.222.0
* T.802

IETF|

* RTP
* Ogg

SMPTE|

* GXF
* MXF

Others|

* 3GP and 3G2
* AMV
* ASF
* AIFF
* AVI
* AU
* BPG
* Bink
* Smacker
* BMP
* DivX Media Format
* EVO
* Flash Video
* IFF
* M2TS
* Matroska
* WebM
* QuickTime File Format
* RatDVD
* RealMedia
* RIFF
* WAV
* MOD and TOD
* VOB, IFO and BUP

Collaborations|

* NETVC
* MPEG LA
* HEVC Advance

Methods|

* Discrete cosine transform
* DCT
* MDCT
* Entropy
* Arithmetic
* Huffman
* Modified
* FFT
* LPC
* ACELP
* CELP
* LSP
* WLPC
* Lossless
* Lossy
* LZ
* DEFLATE
* LZW
* PCM
* A-law
* µ-law
* ADPCM
* DPCM
* Transform
* Wavelet
* Daubechies
* DWT
* Transform

Lists|

* Comparison of audio coding formats
* Comparison of video codecs
* List of codecs

See Compression methods for techniques and Compression software for codecs

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Intel Software

Items in italics are no longer maintained or have planned end-of-life dates.

Development|

* Parallel Studio
* C++ Compiler
* Fortran Compiler
* Debugger
* Advisor
* Inspector
* VTune
* Array Visualizer
* Cilk Plus

Components|

* Concurrent Collections for C++ (CnC)
* Data Analytics Acceleration Library (DAAL)
* Indeo
* Integrated Performance Primitives (IPP)
* Math Kernel Library (MKL)
* Parallel Building Blocks (PBB)
* Intel Array Building Blocks (ArBB)
* Ct
* Threading Building Blocks (TBB)

Open source|

* Cilk Plus
* Concurrent Collections for C++ (CnC)
* Data Analytics Acceleration Library (DAAL)
* MeeGo
* Moblin
* Threading Building Blocks (TBB)
* Tizen

Software programs|

* Telekinesys Research1
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Organizations|

* Developer Zone
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* 1Sold to Microsoft

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