MKV 是一種優秀的多媒體容器格式，它可把多種不同編碼的視頻及16條或以上不同格式的音頻和語言不同的字幕封裝到一個MKV 文件中，而MKVToolNix 是一款免費開源的MKV 編輯器和工具集，能夠合成、編輯Matroska MKV 文件。

MKVToolNix包含了以下幾個MKV專用處理工具：
*mkvmerge：將多媒體文件封裝、合併、混流為MKV文件；
*mkvinfo：輸出MKV文件組件和編碼信息；
*mkvextract：從MKV文件中提取視頻、音頻和字幕軌道；
*mkvpropedit：直接修改現有MKV文件的屬性而無需重混流；
*mmg：mkvmerge GUI，並包含了章節編輯器和頭部編輯器。

MKVToolNix 中的Mkvmerge GUI 允許你導入多個視頻、音頻、字幕軌道，混流合併一個新的MKV 文件，並可以設置導出視頻的寬高比、顯示比例、幀頻等等。

MKVToolNix 中的MKVExtractGUI 則可以從現有的​​MKV 文件中提取其中的一個或多個視頻、音頻或者字幕信息，是專業的MKV 分離工具。

MKVToolNix 是專用的MKV 剪輯工具，提供了4種MKV 切割模式，包括按尺寸、按時長、按特定時間碼和按分段，都是無損剪輯、分割MKV 過程，能夠同步切割視頻、音頻和字幕軌道。比之前介紹的所有支持MKV 分割的工具都要好用，包括Boilsoft Video Splitter、SolveigMM AVI Trimmer 等。

更新記錄：

# Version 42.0.0 "Overtime" 2020-01-02 ## New features and enhancements*mkvmerge:added an optionforcreatingbyte-identical files:`--deterministic `.Partof the implementation of#2698.*mkvmerge:Matroskareader:mkvmerge will remove the`icpf`atom headersif
  they're present in frames read from Matroska files. Implements #2692.




   
  
* mkvmerge: MP4 reader: ALAC tracks: the number of channels, sampling
  frequency and bit depth are now taken from the bitstream in order to fix 
  bogus values on the container level. Implements #2714. 
* mkvpropedit: when changing track UIDs the referring elements in existing 
  chapters & tags will be updated automatically, too. Part of the 
  implementation of #2700. 
* mkvinfo: when the option `-p`/`--hex-positions` is used, element positions 
  will be output regardless of the verbosity level. Part of the implementation 
  of #2713. 
* mkvinfo: added the option `-P`/`--positions` for showing the position of 
  each element in decimal regardless of the verbosity level used. Part of the 
  implementation of #2713.
* mkvinfo: added the option `-o`/`--continue` for continuing processing when 
  the first cluster is encountered regardless of the verbosity level
  used. Part of the implementation of #2713. 
* mkvinfo: added the option `-a`/`--all` for outputting all sub-elements (even 
  cues & seek head entries) and not stopping at the first cluster regardless 
  of the verbosity level used. Part of the implementation of #2713. 
* MKVToolNix GUI: multiplexer: added an option in the preferences for 
  disabling adding cover images from Blu-ray discs. Implements #2693. 
* MKVToolNix GUI: multiplexer: added mkvmerge' s new `--deterministic` option
   in the "additional command-line options" dialog . Part of the implementation 
  of #2698. *  
  MKVToolNix GUI : header editor :: when changing track UIDs the referring 
  elements in existing chapters & tags will be updated automatically , 
  too . Part of the implementation of #2700. ## Bug fixes * mkvmerge : HEVC ES parser : fixed a bug in the slice parser calculating the 
  size of a field which in turn could have led to the slice  



  's type being read 
  wrong. Patch by Torsten Hauska. Fixes #2710.
* mkvmerge: Matroska reader: fixed a segmentation fault when trying to read a 
  file that uses header removal compression but no removed bytes are present 
  in the track headers. Fixes #2687. 
* mkvmerge: MPEG elementary stream parser: fixed an invalid memory access and 
  use of uninitialized memory that could happen under certain 
  circumstances. Fixes #2690. 
* mkvmerge: RealMedia reader: fixed a division by zero when all audio 
  timestamps were zero. Fixes #2689. 
* mkvmerge: RealMedia reader: fixed an invalid memory access in the video 
  frame assembly code triggered by invalid data in the file. Fixes #2691. 

## Build system changes

* `std::optional` (C++17 feature) is now used instead of `boost::optional`. 
* `std::regex` is now used instead of `boost::regex`. 

## Other changes 

* New man page translations into French, Italian, Russian and Chinese 
  Traditional have been added. 

# Version 41.0.0 "Smarra" 2019-12-06
 
## New features and enhancements 

* mkvmerge: Matroska reader: Vorbis tracks: stream comments (aka Vorbis 
  comments) will be converted to Matroska attachments (for cover arts) and 
  Matroska track tags (for other comments). Additionally the stream comments 
  will be removed from Vorbis headers. 
* mkvmerge: MP4 reader: added support for reading Opus audio from MP4 
  files. Part of the implementation of #2673.
* mkvmerge: MP4 reader: added support for reading VP9 video from MP4 
  files. Part of the implementation of #2673. 
* mkvmerge: Ogg reader: Vorbis, Opus & VP8 streams: stream comments (aka 
  Vorbis comments) will be converted to Matroska attachments (for cover arts) 
  and Matroska track tags (for other comments). Additionally the stream 
  comments will be removed from Vorbis headers. 
* mkvmerge: WAV reader: added support for reading RF64 files. 
* MKVToolNix GUI: multiplexer: the list of predefined track names is now split 
  up into three lists, one for each track type (audio, video &  
  subtitles). Part of the implementation of #2654.
* MKVToolNix GUI: multiplexer: when trying to add thumbnails for a Blu-ray the 
  GUI will determine the thumbnail's pixel size from the thumbnail files if 
  the XML file doesn 't contain that information. This works for JPEG and PNG 
  files. Implements #2674. 
* MKVToolNix GUI: general: line edits & combo boxes will now have a "clear 
  text" button appear whenever they' re not empty . Part of the implementation 
  of #2654. * MKVToolNix GUI : update check : the dialog showing the latest news & 
 version 
  information states explicitly where the links take the user ( the MKVToolNix `NEWS.md` file and YouTube respectively ). ## Bug fixes * mkvmerge : Matroska reader : mkvmerge did not copy the codec 's private data 
  when reading WavPack from Matroska files . Fixes #2685. 
* mkvmerge: MPLS handling: re-added caching when using MPLS playlists as input 
  files. Fixes #2666. 
* mkvmerge: MPEG TS reader: when reading an MPLS playlist, the calculation of
   



  
  the minimum timestamp to use for shifting all output timestamps to zero was 
  wrong. It was wrongfully considering timestamps from packets it would not 
  copy due to the MPLS' s timestamp restrictions . This  could lead to the first 
  timestamps in the output file being quite large , e . g . more than a couple of 
  minutes , causing sync problems when multiplexing together with other 
  files . Fixes #2670. * MKVToolNix GUI : multiplexer :  
 the automatic switch between aspect ratio & 
  display width / height wasn  't reflected in the configuration generated for
  `mkvmerge`. The user had to change between the two settings manually. Fixes 
  #2660. 
* MKVToolNix GUI: multiplexer: the progress dialog shown when scanning a 
  Blu-ray wasn' t closed properly in certain situations . Fixes #2678. * MKVToolNix GUI : general : the configured font was not applied to a lot of 
  controls ( e . g . the file &  
 track lists or the menu entries ) on application 
  startup . Instead the user had to open & close the preferences in order for 
  the font to be applied to all controls . Fixes #2671.  

官網地址： https://mkvtoolnix.download

官網更新記錄：  https://mkvtoolnix.download/doc/NEWS.md

軟件下載地址：
Download官網x86綠色版：MKVToolnix 42.0.0 Final綠色免安裝版
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