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- Video_coding_format abstract "A video coding format (or sometimes video compression format) is a content representation format for storage or transmission of digital video content (such as in a data file or bitstream). Examples of video coding formats include MPEG-2 Part 2, MPEG-4 Part 2, H.264 (MPEG-4 Part 10), HEVC, Theora, Dirac, RealVideo RV40, VP8, and VP9. A specific software or hardware implementation capable of video compression and/or decompression to/from a specific video coding format is called a video codec; an example of a video codec is Xvid, which is one of several different codecs which implements encoding and decoding videos in the MPEG-4 Part 2 video coding format in software. As an analogy, a video coding format (specification) is to a codec (specific implementation) what the C Programming Language (specification) is to compiler such as GCC (specific implementation).Some video coding formats are documented by a detailed technical specification document known as a video coding specification. Some such specifications are written and approved by standardization organizations as technical standards, and are thus known as a video coding standard. The term 'standard' is also sometimes used for de facto standards as well as formal standards.Video content encoded using a particular video coding format is normally bundled with an audio stream (encoded using an audio coding format) inside a multimedia container format such as AVI, MP4, FLV, RealMedia, or Matroska. As such, the user normally doesn't have a H.264 file, but instead has a .mp4 video file, which is an MP4 container containing H.264-encoded video, normally alongside AAC-encoded audio. Multimedia container formats can contain any one of a number of different video coding formats; for example the MP4 container format can contain video in either the MPEG-2 Part 2 or the H.264 video coding format, among others. Another example is the initial specification for the file type WebM, which specified the container format (Matroska), but also exactly which video (VP8) and audio (Vorbis) compression format is used inside the Matroska container, even though the Matroska container format itself is capable of containing other video coding formats (VP9 video and Opus audio support was later added to the WebM specification).A video coding format does not dictate all algorithms used by a codec implementing the format. For example, a large part of how a video compression typically works is by finding similarities between video frames (block-matching), and then achieving compression by copying previously-coded similar subimages (e.g., macroblocks) and adding small differences when necessary. Finding optimal combinations of such predictors and differences is an NP-complete problem, meaning that it is practically impossible to find an optimal solution. While the video coding format must of course support such compression across frames in the bitstream format, by not needlessly mandating specific algorithms for finding such block-matches and other encoding steps, the codecs implementing the video coding specification have some freedom to optimize and innovate in their choice of algorithms. For example, section 0.5 of the H.264 specification says that encoding algorithms are not part of the specification. Free choice of algorithm also allows different space–time complexity trade-offs for the same video coding format, so a live feed can use a fast but space-inefficient algorithm, while a one-time DVD encoding for later mass production can trade long encoding-time for space-efficient encoding.".
- Video_coding_format wikiPageID "33402026".
- Video_coding_format wikiPageLength "8740".
- Video_coding_format wikiPageOutDegree "66".
- Video_coding_format wikiPageRevisionID "704495651".
- Video_coding_format wikiPageWikiLink Advanced_Audio_Coding.
- Video_coding_format wikiPageWikiLink Algorithm.
- Video_coding_format wikiPageWikiLink Analysis_of_algorithms.
- Video_coding_format wikiPageWikiLink Audio_Video_Interleave.
- Video_coding_format wikiPageWikiLink Audio_coding_format.
- Video_coding_format wikiPageWikiLink Bitstream_format.
- Video_coding_format wikiPageWikiLink C_(programming_language).
- Video_coding_format wikiPageWikiLink Category:Video.
- Video_coding_format wikiPageWikiLink Category:Video_formats.
- Video_coding_format wikiPageWikiLink Codec.
- Video_coding_format wikiPageWikiLink Comparison_of_video_container_formats.
- Video_coding_format wikiPageWikiLink Content_format.
- Video_coding_format wikiPageWikiLink Data_compression.
- Video_coding_format wikiPageWikiLink De_facto_standard.
- Video_coding_format wikiPageWikiLink Digital_container_format.
- Video_coding_format wikiPageWikiLink Digital_data.
- Video_coding_format wikiPageWikiLink Dirac_(video_compression_format).
- Video_coding_format wikiPageWikiLink Flash_Video.
- Video_coding_format wikiPageWikiLink GNU_Compiler_Collection.
- Video_coding_format wikiPageWikiLink MPEG-2_Part_2.
- Video_coding_format wikiPageWikiLink MPEG-4_AVC.
- Video_coding_format wikiPageWikiLink HDMI.
- Video_coding_format wikiPageWikiLink High_Efficiency_Video_Coding.
- Video_coding_format wikiPageWikiLink Inter_frame.
- Video_coding_format wikiPageWikiLink Intra-frame.
- Video_coding_format wikiPageWikiLink JPEG.
- Video_coding_format wikiPageWikiLink Lossless_compression.
- Video_coding_format wikiPageWikiLink Lossy_compression.
- Video_coding_format wikiPageWikiLink MPEG-2.
- Video_coding_format wikiPageWikiLink MPEG-4_Part_14.
- Video_coding_format wikiPageWikiLink MPEG-4_Part_2.
- Video_coding_format wikiPageWikiLink Macroblock.
- Video_coding_format wikiPageWikiLink Matroska.
- Video_coding_format wikiPageWikiLink Motion_JPEG.
- Video_coding_format wikiPageWikiLink NP-completeness.
- Video_coding_format wikiPageWikiLink Opus_(audio_format).
- Video_coding_format wikiPageWikiLink Profile_(engineering).
- Video_coding_format wikiPageWikiLink RealMedia.
- Video_coding_format wikiPageWikiLink RealVideo.
- Video_coding_format wikiPageWikiLink Specification_(technical_standard).
- Video_coding_format wikiPageWikiLink Standards_organization.
- Video_coding_format wikiPageWikiLink Technical_standard.
- Video_coding_format wikiPageWikiLink Theora.
- Video_coding_format wikiPageWikiLink Uncompressed_video.
- Video_coding_format wikiPageWikiLink VP8.
- Video_coding_format wikiPageWikiLink VP9.
- Video_coding_format wikiPageWikiLink Video.
- Video_coding_format wikiPageWikiLink Video_codec.
- Video_coding_format wikiPageWikiLink Video_compression_picture_types.
- Video_coding_format wikiPageWikiLink Video_editing.
- Video_coding_format wikiPageWikiLink Video_file_format.
- Video_coding_format wikiPageWikiLink Vorbis.
- Video_coding_format wikiPageWikiLink WebM.
- Video_coding_format wikiPageWikiLink Xvid.
- Video_coding_format wikiPageWikiLinkText "Format".
- Video_coding_format wikiPageWikiLinkText "Video coding format".
- Video_coding_format wikiPageWikiLinkText "coding of moving pictures".
- Video_coding_format wikiPageWikiLinkText "encoded".
- Video_coding_format wikiPageWikiLinkText "video coding format".
- Video_coding_format wikiPageWikiLinkText "video compression standard".
- Video_coding_format wikiPageWikiLinkText "video compression".
- Video_coding_format wikiPageWikiLinkText "video format".
- Video_coding_format wikiPageWikiLinkText "video".
- Video_coding_format wikiPageUsesTemplate Template:Refimprove.
- Video_coding_format wikiPageUsesTemplate Template:Reflist.
- Video_coding_format subject Category:Video.
- Video_coding_format subject Category:Video_formats.
- Video_coding_format hypernym Format.
- Video_coding_format type Software.
- Video_coding_format comment "A video coding format (or sometimes video compression format) is a content representation format for storage or transmission of digital video content (such as in a data file or bitstream). Examples of video coding formats include MPEG-2 Part 2, MPEG-4 Part 2, H.264 (MPEG-4 Part 10), HEVC, Theora, Dirac, RealVideo RV40, VP8, and VP9.".
- Video_coding_format label "Video coding format".
- Video_coding_format sameAs Q7927899.
- Video_coding_format sameAs Formato_de_compresión_de_video.
- Video_coding_format sameAs קידוד_וידאו.
- Video_coding_format sameAs m.0h96q_0.
- Video_coding_format sameAs Q7927899.
- Video_coding_format wasDerivedFrom Video_coding_format?oldid=704495651.
- Video_coding_format isPrimaryTopicOf Video_coding_format.