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MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) (ISO/IEC JTC 1/SC29/WG11) under the formal standard ISO/IEC 14496 – Coding ...
AAC, MP3, MPEG-2 Part 3, others M4V.m4v MPEG-4 Part 12: H.264: AAC, Dolby Digital: Developed by Apple, used in iTunes. Very similar to MP4 format, but may optionally have DRM. SVI .svi MPEG-4 utilising a special header ? ? Samsung video format for portable players 3GPP.3gp MPEG-4 Part 12: MPEG-4 Part 2, H.263, H.264
MPEG-4 files with audio and video generally use the standard .mp4 extension. Audio-only MPEG-4 files generally have a .m4a extension. This is especially true of unprotected content. MPEG-4 files with audio streams encrypted by FairPlay digital rights management as were sold through the iTunes Store use the .m4p extension.
Non-free Various proprietary VoIP software FFmpeg voice recording: No Yes No Yes No G.726: ITU-T 1990-12 Free Various proprietary VoIP software FFmpeg, Ekiga and other VoIP software voice recording: No Yes No No No G.728: ITU-T 1992-09 Non-free Various proprietary VoIP software voice recording: No Yes No Yes No G.729: ITU-T 1996-03 G.729 (06/12 ...
Free and open-source software portal; libavcodec is a free and open-source [4] library of codecs for encoding and decoding video and audio data. [5]libavcodec is an integral part of many open-source multimedia applications and frameworks.
There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge). libgsm – Lossy compression ; opencore-amr – Lossy compression (AMR and AMR-WB) liba52 – a free ATSC A/52 stream decoder (AC-3) libdca – a free DTS Coherent Acoustics decoder; Codec2 – Low bitrate compression, primarily voice
MP4 and 3GPP file reading (local & http), MP3 and AAC files (local & http) and HTTP streaming (ShoutCast/ICEcast radios), Most common media codecs for image, audio and video, Most common media containers, 3GPP Timed Text / MPEG-4 Streaming Text, MPEG-2 TS demultiplexer (local/UDP/RTP) with DVB support (Linux only), Streaming support through RTP ...
DMF only supports MPEG-4 Visual ASP with DivX profiles. EVO only supports MPEG-4 AVC, MPEG-1 Video, MPEG-2 Video and VC-1. F4V only supports MPEG-4 AVC, MPEG-4 Visual and H.263. FLV only supports MPEG-4 Visual, VP6, Sorenson Spark and Screen Video. MPEG-4 AVC in FLV is possible, but not standard. [e]