Coding and decoding Learning notes (14): Containers (Next article)

Matroska (MKV)

MKV, not any codec or system standard, but can actually encapsulate anything. is an open and open source container format.

Extension. mkv. Mka. MKS
Internet media type Video/x-matroska Audio/x-matroska Open
Hair matroska.org
Format Video file format
Specialized in Multimedia
Free file format. Yes:gnu LGPL

Matroska, many people think of it as a MKV, in fact, MKV is just one of Matroska Media series of documents. Matroska is a new multimedia encapsulation format that encapsulates multiple different encoded video and 16 or more different formats of audio and language subtitles into a Matroska media file. It is also one of the open source multimedia packaging formats.

Multimedia packaging format, referred to as MCF, multimedia container, is an open (no identity restrictions, free of charge) and the freedom to store data in the format. Developers have pledged to be free to use this format and the software developed in this format, and will not become a commercial research project when this format is prevalent.

The Matroska media defines three types of files: MKV (Matroska video file), which can contain audio and subtitles, MKA (Matroska Audio file): A single audio file that can have multiple and multiple types of tracks; MKS (Matro Ska subtitles): subtitle file.

MKV is the most common of these three files.

Matroska's biggest feature is the ability to accommodate a variety of different types of video coding, audio coding and subtitle streaming, and it can accommodate very high density RealMedia and QuickTime files, and organize their audio and video to achieve a better and sharper effect.

Matroska development is a big challenge to a variety of traditional media formats, though, Matroska is also developed into a multi-functional multimedia container.

MP4

MP4, a MPEG-4-defined standard syllable breaks video container, is described in MPEG-4 part 14, based on the ISO basic media file format (defined in MPEG-4 part 12 and JPEG-12). It is a multimedia computer file format using MPEG-4, and the secondary file name is. mp4 to store digital audio and digital video mainly.

Name extension. mp4
Internet media type Video/mp4, Audio/mp4, Application/mp4
Type Code MPG4
Developer ISO
Format Video file format
Special belongs to Audio, video, text
Extended from QuickTime. mov and MPEG-4 part 12
Standard ISO/IEC 14496-14

MOD

The MoD format is the name of the storage format used by the JVC-produced hard disk camcorder.

MOV

MOV is the standard QuickTime video container for evaluating companies. QuickTime movie is a container developed by Apple, and because of Apple's dominance in professional graphics, the QuickTime format has become a common format for the filmmaking industry. February 11, 1998, the International Standards Organization (ISO) recognized the QuickTime file format as the basis for the MPEG-4 standard. QT can be stored in a very rich content, in addition to video, audio can also support pictures, text (text subtitles) and so on. Extended Name: mov

Friends who have used a Mac should have been in touch with QuickTime. QuickTime was originally an image video processing software used by Apple on Mac computers. Quick-time provides two standard images and digital video formats, which can support static pic and JPG image formats, dynamic MOV based on Indeo compression, and the MPG video format based on MPEG compression methods.

Ogg

Ogg is xiph.org audio codec Vorbis and video codec Theora standard brick container, OGG media a fully open multimedia system program, OGM (Ogg media File) is its container format. OGM can support multiple videos, audio, subtitles (text subtitles) and many other tracks. Extended name: Ogg.

OGM

OGM (Ogg Media) is a XIPH.OFG video codec container that is no longer supported and is not encouraged to use.

RealMedia

RealMedia are standard containers for RealVideo and RealAudio. Real or real Media (RM) files are a kind of file container developed by RealNetworks. It usually accommodates only real and real audio-encoded media. This file has a certain interaction function, allowing scripting to control playback. RM, especially the variable bit rate rmvb format, is very small and very popular with network downloads. Extended Name: RM/RMVB

RM

Real Networks's audio/video compression specification, one of real media, what real player can do is to use Internet resources to broadcast live audio/video that conforms to real media specifications. The real media specification consists mainly of three types of files: RealAudio, real and real Flash (the new generation of high compression ratio animation formats, launched in collaboration with the Macromedia Company, Real Networks). Real Video (RA, RAM) format from the start is the location is in the video streaming applications, but also can be said to be the founder of streaming technology. It can be used in the 56K modem dial-up access conditions to achieve uninterrupted video playback, but its image quality is worse than VCD, if you have seen those RM compressed DVD can be significantly contrasted.

RMVB

This is a new video format that is extended by the RM video format upgrade. Its advanced point is that the RMVB video format broke the original RM format of the average compression sampling mode, in the guarantee of the average compression ratio based on the reasonable use of bit rate resources, that is, static and action scenes with less scene with low coding rate, This allows for more bandwidth space, which can be exploited in the presence of fast moving scenes. In order to ensure the quality of the still picture under the premise of a large increase in the image of the motion picture quality, so that the image quality and file size to achieve a delicate balance. In addition, compared to the dvdrip format, RMVB video also has a more obvious advantage, a size of about 700MB DVD film, if it is transcribed into the same audio-visual quality of the RMVB format, its head is about 400MB. Not only that, this video format also has built-in subtitles and the need for plug-in support and other unique advantages. To play this video format, you can play it using the RealOne Player2.0 or RealPlayer8.0 plus RealVideo9.0 decoder.

VOB

The VOB file (video Object) is a container format for a DVD media. VOB can contain video, audio, letters, and menus that are integrated in a streaming format. VOB is based on MPEG PS format, but with additional restrictions and private flow specifications. MPEG PS provides non-standard data called private streams. The VOB file is a very strict subset of the MEPG PS table station. All VOB files are MPEG PS, but not all MPEG PS adhere to the VOB file definition.

Similar to MPEG PS, VOB files can contain h.262/mpeg-2 Part2 or MPEG-1 Part 2 video, MPEG-1 Audio layerii or MOEG-2 Audio II audio, but compared to MPEG PS, There are certain limitations to using these compression formats in VOB files. In addition, VOB can include linear pcm,ac-3 or DTS video as well as letters. The VOB file cannot contain AAC audio (MPEG-2 Part 7), MPEG-4 compression format, or anything else, which is allowed in the MPEG PS standard.

The file name extension. Vob
Developer: DVD Forum
Type: Media container
Includes: audio, video, letters
For: Dvd-video
Where to expand: MPEG program stream, ISO/IEC 13818-1
Standard specification: Dvd-video book

Note: The above materials are from the Wiki collation.

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