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Some are combinations of common container formats and audio and video coding profiles, such as AVCHD and DivX formats. Although sometimes compared to DivX products, Xvid is neither a container format nor a video format, it is a software library that encodes video using specific coding profiles of the common MPEG-4 ASP video format. Those types ...
Windows Media Audio Lossless (WMA Lossless) is a lossless audio codec that competes with ATRAC Advanced Lossless, Dolby TrueHD, DTS-HD Master Audio, Shorten, Monkey's Audio, FLAC, Apple Lossless, and WavPack (Since late 2011, [37] [38] [39] the last three have the advantage of being open source software and available for nearly any operating ...
Lossless formats Audio compression format Algorithm Sample rate Bits per sample Latency Stereo Multichannel ALAC: Lossless: 1–384 kHz 16, 20, 24, 32 [60]? Yes Yes: Up to 8 channels ALS: Lossless: 0–4 GHz 8, 16, 24, 32 (int or float) ? Yes Yes: Up to 65536 channels ATRAC Advanced Lossless Lossless: 44.1 kHz 16 ? Yes No Dolby TrueHD: Lossless ...
FLAC (/ f l æ k /; Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, developed by the Xiph.Org Foundation, and is also the name of the free software project producing the FLAC tools, the reference software package that includes a codec implementation.
TTA – Lossless compression; WavPack – Hybrid lossy/lossless; Bonk – Hybrid lossy/lossless; supported by fre:ac (formerly BonkEnc) Apple Lossless – Lossless compression (MP4) Fraunhofer FDK AAC – Lossy compression (AAC) FFmpeg codecs in the libavcodec library, e.g. AC-3, AAC, ADPCM, PCM, Apple Lossless, FLAC, WMA, Vorbis, MP2, etc.
A lossless audio coding format reduces the total data needed to represent a sound but can be de-coded to its original, uncompressed form. A lossy audio coding format additionally reduces the bit resolution of the sound on top of compression, which results in far less data at the cost of irretrievably lost information.
In a lossless compressed format, however, the music would occupy a smaller file than an uncompressed format and the silence would take up almost no space at all. Lossless compression formats include FLAC, WavPack, Monkey's Audio, ALAC (Apple Lossless). They provide a compression ratio of about 2:1 (i.e. their files take up half the space of PCM).
File Container File Extension Number of channels MPEG-1 Audio Layer III MPEG-2 Audio Layer III .mp3: 2 Free Lossless Audio Codec .flac: 2 Raw AAC stream Audio Data Interchange Format (ADIF) Audio Data Transport Stream (ADTS) .aac, .adt, .adts 2 MPEG-4 audio-only file .m4a: 5.1 Waveform Audio File Format .wav: 2 Windows Media Audio .wma: 5.1 ...