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  2. Comparison of video container formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_video...

    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 ...

  3. Comparison of video codecs - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_video_codecs

    The quality the codec can achieve is heavily based on the compression format the codec uses. A codec is not a format, and there may be multiple codecs that implement the same compression specification – for example, MPEG-1 codecs typically do not achieve quality/size ratio comparable to codecs that implement the more modern H.264 specification.

  4. Comparison of audio coding formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_audio_coding...

    Yes: up to 5 full range audio channels and an LFE-channel with MPEG Multichannel: Musepack: Subband: 32, 37.8, 44.1, 48 kHz 20–350 kbit/s ? No Yes Yes Yes: Up to 8 channels Opus: MDCT, LPC, LTP: 8–48 kHz 6–510 kbit/s 5–66.5 ms Yes Yes Yes Yes: Up to 255 channels [59] RealAudio: MDCT: Varies (see article) Varies (see article) Varies Yes ...

  5. Video file format - Wikipedia

    en.wikipedia.org/wiki/Video_file_format

    That is the case with some video file formats, such as WebM (.webm), Windows Media Video (.wmv), Flash Video (.flv), and Ogg Video (.ogv), each of which can only contain a few well-defined subtypes of video and audio coding formats, making it relatively easy to know which codec will play the file.

  6. MPEG-4 - Wikipedia

    en.wikipedia.org/wiki/MPEG-4

    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 ...

  7. List of open-source codecs - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source_codecs

    Turing – A High Efficiency Video Coding (HEVC/H.265) encoder implemented by BBC Research. libaom – Reference implementation for the royalty free AV1 video coding format by AOMedia, inheriting technologies from VP9, Daala and Thor. Kvazaar – An academic open-source encoder based on the High Efficiency Video Coding (HEVC/H.265) standard.

  8. Audio file format - Wikipedia

    en.wikipedia.org/wiki/Audio_file_format

    Audio file icons of various formats. An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called the audio coding format and can be uncompressed, or compressed to reduce the file size, often using lossy compression.

  9. Apple Lossless Audio Codec - Wikipedia

    en.wikipedia.org/wiki/Apple_Lossless_Audio_Codec

    The data compression software for encoding into ALAC files, Apple Lossless Encoder, was introduced into the Mac OS X Core Audio framework on April 28, 2004, together with the QuickTime 6.5.1 update, thus making it available in iTunes since version 4.5 and above, and its replacement, the Music application. [8]