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Codec used to send video or audio signals over IP network
IP codecs are used to send video or audio signals over an IP network such as the Internet. The initials "IP" here stand for "Internet Protocol", while
IP_codec
Audio codec standard
Audio Codec (iSAC) is a wideband speech codec, developed by Global IP Solutions (GIPS) (acquired by Google Inc in 2011). It is suitable for VoIP applications
Internet_Speech_Audio_Codec
Audio coding format
Bitrate Codec (iLBC) is a royalty-free narrowband speech audio coding format and an open-source reference implementation (codec), developed by Global IP Solutions
Internet_Low_Bitrate_Codec
Lossy audio coding format
licensed under royalty-free terms. Opus is widely used as a voice over IP (VoIP) codec in applications such as Discord, WhatsApp, and the PlayStation 4. Opus
Opus_(audio_format)
Distribution of live digital audio across an IP network
different codecs designed by different manufacturers. IP audio codecs are available for wired and wireless broadband IP codec solutions. IP audio codecs are
Audio_over_IP
Methods of delivering voice communications and multimedia over IP networks
open source voice codec known as iLBC, and a codec that uses only 8 kbit/s each way called G.729. Early providers of voice-over-IP services used business
Voice_over_IP
ipDTL is an IP codec that runs in a web browser, used for remote broadcasts in television, radio, and voice-over. It serves as a replacement for and is
IpDTL
Type of audio codec
The ISDN codec, which instead uses ISDN lines, and the IP codec which uses private or public IP networks are also common. Primarily used in broadcast engineering
POTS_codec
Open, royalty-free video coding format
Decoder IP adds support for AV2 video codec". www.allegrodvt.com. Retrieved 2026-06-17. "Chips&Media Completes Development of Next-Gen 'AV2' HW Decoder IP, Accelerating
AV2
Television transmitted over a computer network
compressed by Video and audio codecs and then encapsulated in MPEG transport stream or Real-time Transport Protocol or other packets. IP multicasting allows for
Internet_Protocol_television
Digital video coder/decoder
A video codec is software or hardware that compresses and decompresses digital video. In the context of video compression, codec is a portmanteau of encoder
Video_codec
List of computer file compression formats
The following is a list of compression formats and related codecs. Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for
List_of_codecs
Video compression standard
266 (VVC) Codec, Shape Keyframes, New Templates and Performance Boosts". www.videosoftdev.com. Retrieved 7 July 2026. "IP Decoder AV1 8K IP Video Multiformats
Versatile_Video_Coding
ITU-T recommendation
7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band
G.722
Retrieved 2017-12-22. Cisco IP Communicator 7.0 Data sheet - support for iLBC Retrieved on 2009-07-08 Skype Community, Current Codec Uses Archived July 16,
Comparison of audio coding formats
Comparison_of_audio_coding_formats
Video compression technology
infrastructures, including both IP networks and SDI infrastructures, with the results appearing visually lossless. TICO codec was represented in 2013 by the
TICO_(codec)
2013 open and royalty-free video coding format
concluded that "VP9 and both HEVC codecs produce very similar performance" and "Particularly at lower bitrates, both HEVC codecs and VP9 deliver substantially
VP9
Widely used standard for video compression
"Fourth Annual H.264 video codecs comparison". Moscow State University. (dated December 2007) "Discussion on H.264 with respect to IP cameras in use within
Advanced_Video_Coding
Audio codec and compression format
replace the iSAC and iLBC, which again were licensed from Global IP Solutions. The SILK codec was a separate development branch from SVOPC and it has been
SILK
Lossy audio compression applied to human speech
has since been widely adopted in voice-over-IP (VoIP) applications, such as the G.729.1 wideband audio codec introduced in 2006, Apple's FaceTime (using
Speech_coding
Telephone circuit element
the connection. POTS codecs work with analog lines, ISDN codecs with ISDN lines, and IP codecs with any link that can provide IP connectivity. These employ
Telephone_hybrid
Audio codec
audio codec implementations developed and licensed by PictureTel Corporation (acquired by Polycom, Inc. in 2001). There are three Siren codecs: Siren
Siren_(codec)
Company
video and voice over IP (VoIP). GIPS was perhaps best known for developing the narrowband iLBC and wideband iSAC speech codecs. GIPS software was generally
Global_IP_Solutions
Type of telephone adapter
the voice signal using a voice codec such as G.711, G.729, GSM, or iLBC. Since the ATA communicates directly with the VoIP server, it does not require a
Analog_telephone_adapter
Architectural framework of telecommunications
The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is a standardized architectural framework for delivering IP-based multimedia
IP_Multimedia_Subsystem
High-quality audio telephony
VoIP media processing engine supporting wideband and HD voice that provides RTP and codecs through a plugin framework for use with SIP and other VoIP protocols
Wideband_audio
Phone using one or more VoIP technologies
Transport Protocol (RTP) is used in most VoIP systems. For voice and media encoding, a variety of codecs are available, such as for audio: G.711, GSM
VoIP_phone
Audio compression codec designed for human speech
obsoleted by Opus. Unlike many other speech codecs, Speex is not targeted at cell phones but rather at voice over IP (VoIP) and file-based compression. The design
Speex
711) VoIP codec is to assume 100 kbit/s per session multiplied by the number of sessions required at the location. For example 10 sessions of VoIP would
Integrated_access_device
Voice over IP software comparison
over IP (VoIP) software that examines applications and systems used for conducting voice and multimedia communications across Internet Protocol (IP) networks
Comparison_of_VoIP_software
2008 open and royalty-free video coding format
VP8 Video For Windows codec". Optima SC Inc. Retrieved 2 September 2011. Introducing "Anthill," the First VP8 Hardware Encoder IP Release, WebM Project
VP8
Voice over IP software
voice over IP softphone, SIP client and service. It may be used for audio and video direct calls and calls through any VoIP softswitch or IP-PBX. Linphone
Linphone
Format for digital video content
services delivered directly over IP" (PDF). "World, Meet Thor – a Project to Hammer Out a Royalty Free Video Codec". August 11, 2015. Thomson, Gavin;
Video_coding_format
Interoperability standard for professional audio over IP
Four Channel IP Audio Codec". Tieline: The Codec Company. Retrieved July 29, 2025. "Gateway Multichannel IP Audio Codec". Tieline: The Codec Company. Retrieved
AES67
API that supports browser-to-browser communication
Global IP Solutions or GIPS, a VoIP and videoconferencing software company that had developed many components required for RTC, such as codecs and echo
WebRTC
2018 open and royalty-free video coding format
browser vendors. The AV1 bitstream specification includes a reference video codec. In 2018, Facebook re-encoded 400 compressed Facebook videos with AV1, VP9
AV1
Multimedia framework
media information. Among included libraries are libavcodec, an audio/video codec library used by many commercial and free software products, libavformat
FFmpeg
Use of voice over IP to carry modem signals
VoIP codecs are designed only to carry speech signals, successful modem-over-VoIP operation generally requires the use of G.711 coding on the VoIP audio
Modem_over_VoIP
American technology corporation
the stationary set-up of the codecs that preceded it. BRIC technology was also used to develop the BRIC-Link. An IP codec, BRIC-Link was intended for use
Comrex
Speech coding standard
phone system. It uses linear predictive coding (LPC). The bit rate of the codec is 13 kbit/s, or 1.625 bits/audio sample (often padded out to 33 bytes/20
Full_Rate
unnecessary codec conversions. To enable IP shuffling there must be at least one common codec between the two point-to-point IP endpoints. IP shuffling
IP_shuffling
Audio compression standard
called the LD-MDCT. AAC-LD is widely used by Apple as the voice-over-IP (VoIP) speech codec in FaceTime. The most stringent requirements are a maximum algorithmic
AAC-LD
Retired telecommunications software service/application
by Skype Technologies, an acquired division of Microsoft, best known for IP-based videotelephony, videoconferencing and voice calls. It also had instant
Skype
Wideband speech audio coding standard
141 V8.0.0 (2009-01); 3GPP TS 26.141; IP Multimedia System (IMS) Messaging and Presence; Media formats and codecs Page 10. Retrieved on 2009-06-02. US7403892B2
Adaptive_Multi-Rate_Wideband
French entrepreneur and engineer
Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony L'essentiel de la VoIP 2004 La voix sur IP Codecs, H.323
David_Gurle
Nonprofit multimedia format organization
of which has been Vorbis, an open and freely licensed audio format and codec designed to compete with the patented WMA, MP3 and AAC. As of 2013, development
Xiph.Org_Foundation
Family of proprietary audio codecs owned by Qualcomm
latency wireless audio for gaming and video, and audio over IP. In addition, the aptX codec was introduced as an alternative to SBC, the sub-band coding
AptX
Field of telecommunication services
led to the development of PCM codec-filter chips in the late 1970s. The silicon-gate CMOS (complementary MOS) PCM codec-filter chip, developed by Hodges
Telephony
Canadian software company
the PCoIP protocol. In 2008, VMware announced it was licensing Teradici's PCoIP protocol. Teradici developed a software implementation of PCoIP, which
Teradici
Software program for making telephone calls over the Internet
both end-points must support the same voice-over-IP protocol, and at least one common audio codec. Many service providers use the Session Initiation
Softphone
Low-latency video compression standard
21122) is an image and video codec that offers both visually and mathematically lossless quality. It is a special-purpose codec that is specifically designed
JPEG_XS
Technique to mask the effects of packet loss in voice over IP
effects of packet loss in voice over IP (VoIP) communications. When the voice signal is sent as VoIP packets on an IP network, the packets may (and likely
Packet_loss_concealment
Feature in Nvidia graphics cards
Nvidia GPUs. It is accompanied by NVENC for video encoding in Nvidia's Video Codec SDK. NVDEC can offload video decoding to full fixed-function decoding hardware
NVDEC
Video compression format, succeeds H.264/MPEG-4 AVC
High Efficiency Image Format (HEIF) is a container format whose default codec is HEVC. While AVC uses the integer discrete cosine transform (DCT) with
High_Efficiency_Video_Coding
The following is a list of notable vendors in the business of licensing IP cores. Akeana Quadric GPNPU processors Cadence Design Systems Cosmic Circuits
List of semiconductor IP core vendors
List_of_semiconductor_IP_core_vendors
Video-conferencing software developed by Google
WebRTC standard, Google Meet uses the VP9 video codec for video stream compression and Opus audio codec for voice stream compression. In April 2020, Google
Google_Meet
Superwideband speech audio coding standard
2010 to 2014, being completed in December 2014 with 3GPP Release 12. The codec was developed collaboratively among chipset, handset and infrastructure
Enhanced_Voice_Services
Professional video over IP systems use some existing standard video codec to reduce the program material to a bitstream (e.g., an MPEG transport stream)
Professional_video_over_IP
Remote production of television or radio programmes
internet is also now used. Modern applications such as hardware and software IP codecs have allowed the use of public 3G/4G networks to broadcast video and audio
Outside_broadcasting
Protocol for delivering audio and video over IP networks
Protocol (RTP) is a network protocol for delivering audio and video over IP networks. RTP is used in communication and entertainment systems that involve
Real-time_Transport_Protocol
ITU-T Recommendation
as well as G.722.1 Annex C, and Polycom's IP within the new 20 kHz ITU fullband codec, G.719. List of codecs Comparison of audio coding formats Wideband
G.722.1
Proprietary VoIP software
supports the GSM Full Rate codec[citation needed] and used to support the Speex codec, which Ventrilo 4.0.0 replaced with the Opus codec. Ventrilo was heavily
Ventrilo
Peer-to-peer internet telephony and instant messaging software application
proprietary software and used several proprietary codecs, including GIPS and Internet Speech Audio Codec (iSAC).[citation needed] Gizmo Project was founded
Gizmo5
ITU-T Recommendation
in Internet Protocol (IP) transport applications on fixed, wireless and mobile networks. Despite its embedded nature, the codec also performs well with
G.718
Interoperable video and audio networking
video, audio, and related metadata over data networks within a multi-vendor IP audiovisual system. IPMX is based on the SMPTE 2110 and AES67 suite of standards
IPMX
Defunct American fabless semiconductor company
Broadcom authored its own VoIP codecs in 2002, and released them as open source with the LGPL license in 2009. Such codecs are: The BroadVoice 16 with
Broadcom_Corporation
Multimedia information signaling
RFC 5686 – "RTP Payload Format for mU-law EMbedded Codec for Low-delay IP Communication (UEMCLIP) Speech Codec," Proposed Standard. RFC 5993 – "RTP Payload
RTP_payload_formats
ITU-T Recommendation
IP (VoIP) applications due to its low bandwidth requirement. Music or tones such as DTMF or fax tones cannot be transported reliably with this codec,
G.723.1
Internet. The conversion process may include recoding with a different codec, silence suppression, comfort noise generation and other tricks that can
TDM-to-packet_conversion
ITU-T Recommendation
commonly designated as G.729a and G.729b: G.729: This is the original codec using a high-complexity algorithm. G.729A or Annex A: This version has a
G.729
Digital radio standard
and DAB-IP are related standards that were developed for mobile radio and TV, they support MPEG 4 AVC and WMV9 respectively as video codecs. However
Digital_Audio_Broadcasting
File format family
Windows Media Video (WMV) is a series of video codecs and their corresponding video coding formats developed by Microsoft. It is part of the Windows Media
Windows_Media_Video
multi-format hardware decoder IP cores that will support up to 1080p resolution full motion H.264/AVC video "Hantro Hardware Video Codec IP". Archived from the
H.264/MPEG-4 AVC products and implementations
H.264/MPEG-4_AVC_products_and_implementations
Project (3GPP) for multimedia sessions with multiple participants in the IP Multimedia Subsystem (IMS). It is therefore considered a core component of
SIP extensions for the IP Multimedia Subsystem
SIP_extensions_for_the_IP_Multimedia_Subsystem
Digital audio format
Layer III was originally defined in 1991 as one of the three possible audio codecs of the MPEG-1 standard (along with MPEG-1 Audio Layer I and MPEG-1 Audio
MP3
Intra-frame video codec profile of H.264/MPEG-4 AVC
introduced AVC Intra codec semiconductor intellectual property cores. CoreEL Technologies provides AVC-Intra Class 50 and AVC-Intra Class 100 IP cores. Tata Elxsi
AVC-Intra
Intellectual property provider
(video codecs), and image processing. Since 2003, the company has developed video technology. Its video semiconductor intellectual property cores (IP cores)
Chips&Media
Video codec
for recovery of packet loss on IP networks - forward error correction and error concealment. RTVideo is a proprietary codec. Like RTAudio this protocol can
RTVideo
Audio-visual communication signaling protocol
both ITU-defined codecs and codecs defined outside the ITU. Codecs that are widely implemented by H.323 equipment include: Audio codecs: G.711, G.729 (including
H.323
American video technology company
in Clifton Park, New York, that designed video codec technology. It created a series of video codecs called TrueMotion (including TrueMotion S, TrueMotion
On2_Technologies
Technique used to encode voices in telephony
voice over IP communications. In the early 1990s, ADPCM was also used by Interactive Multimedia Association to develop the legacy audio codecs ADPCM DVI
Adaptive differential pulse-code modulation
Adaptive_differential_pulse-code_modulation
Hiding messages in other messages
devised new steganographic algorithms that use codec parameters as cover object to realise real-time covert VoIP steganography. Their findings were published
Steganography
AMD hardware accelerator for encoding MP4 H.264 videos, built into AMD GPU's
or Video Codec Engine in official documentation) is AMD's video encoding application-specific integrated circuit implementing the video codec H.264/MPEG-4
Video_Coding_Engine
High-speed wireless communication functionality
only in LTE and NR; HD voice was available in 3G too. VoLTE is based on the IP Multimedia Subsystem (IMS) architectural framework, with specific profiles
Voice_over_LTE
ITU-T recommendation
Pulse code modulation (PCM) of voice frequencies, is a narrowband audio codec originally designed for use in telephony that provides toll-quality audio
G.711
Multimedia file format families
12. A 3GP container may consist of H.263 or H.264 video codecs, and AMR or AAC-LC audio codecs. 3G2 (3GPP2 file format) is a multimedia container format
3GP_and_3G2
Open source amateur radio mode
platform. M17 uses Codec 2, a low bitrate voice codec developed by David Rowe VK5DGR et al. Codec 2 was selected as the voice codec due to its open licensing
M17_(amateur_radio)
Non-profit industry consortium
codec and format, as a successor to VP9 and an alternative to HEVC. AV1 uses elements from Daala, Thor, and VP10, three preceding open video codecs.
Alliance_for_Open_Media
Real-time video communication
introduction of more efficient and powerful video codecs and the advent of lower-cost high-speed ISDN data and IP (Internet) services in the 1990s. Significant
Videotelephony
Audio compression standard
compression method for audio which is used by VoIP applications. It is a lossy speech compression codec designed specifically towards communication channels
SVOPC
Video compression format
and an M-JPEG CodecID is planned for the Matroska file format. M-JPEG is now used by video-capture devices such as digital cameras, IP cameras, and webcams
Motion_JPEG
platform of products and IP office systems. The systems add high-quality voice codecs like the G.722 codec and new menus over older IP phone series. The 9620
Avaya 9600-series IP deskphones
Avaya_9600-series_IP_deskphones
ITU-T Recommendation
G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede
G.726
Audiovisual media file format
updated to accommodate VP9 video and Opus audio. It also supports the AV1 codec. Native WebM support by Mozilla Firefox, Opera, and Google Chrome was announced
WebM
2025 Android mobile operating system
Professional Video (APV) codec, designed for professional-level high-quality video recording and post-production. The APV codec standard offers features
Android_16
Emulation of time-division multiplexing over a packet-switched network
In computer networking and telecommunications, TDM over IP (TDMoIP) is the emulation of time-division multiplexing (TDM) over a packet-switched network
TDM_over_IP
Video compression standard
141 V8.0.0 (2009-01); 3GPP TS 26.141; IP Multimedia System (IMS) Messaging and Presence; Media formats and codecs Retrieved on 2009-06-02. Kaourantin.net
H.263
Video network protocol
Lightweight Codec Used in IP Networked or in SDI Infrastructures - Engineering360". standards.globalspec.com. "NewTek announces NDI, an open protocol for IP production
Network_Device_Interface
world leader in Telepresence systems), IP Telephony (VoIP), Servers and Appliances Cisco Unified IP Phones—Wireless IP Phone 7920, 7945, 7965, 7942, 8900
List_of_Cisco_products
Family of digital signal processor microprocessors
video codecs supported by the Snapdragon 200 series. The different video codecs supported by the Snapdragon 400 series. The different video codecs supported
Qualcomm_Hexagon
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