MKVToolNix 74.0.0 リリース

Matroska ファイルを作成 / 再編成 / 分解 / 解析 することができるツールパック。各種動画 / 音声 / 字幕 ファイルを元に MKV / MKA / MKS / MK3D / WebM ファイルを作成したり、MKV / MKA ファイルから素材を無劣化で抽出したり、MKV / WebM ファイル内のトラックを再編成したりすることができます。複数のファイルを連結して一つのファイルにする機能や、マルチトラックの MKV / WebM を作成する機能、作成するファイルにチャプターを添付する機能… 等々が付いています。
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MKVToolNix 74.0.0

Version 74.0.0
Released Feb 12, 2023

Noteworthy changes / Bug fixes

## New features and enhancements

* mkvmerge: SRT handling: added a hack called `--engage
  keep_whitespaces_in_text_subtitles` which disables stripping whitespaces
  from the start & end of each line of SRT entries during muxing. Part of the
  implementation of #3470.

## Bug fixes

* all: Windows: UNC paths of type `\\?\C:\…` are supported again by switching
  back to Boost's file system library instead of using C++17's file system
  library. Fixes #3058.
* mkvmerge: AVC/H.264 & HEVC/H.265 packetizers: when appending tracks the
  pixel dimensions will be checked & muxing will be aborted if they don't
  match. Fixes #3480.
* mkvmerge: file type detection: file types that can be detected unambiguously
  by their content (e.g. Matroska, MP4, WAV…) will now preferred in the
  detection order over file types based on their extension. Prevents certain
  cases of mis-detection, e.g. DTS in WAV but with a file name extension of
  `.dts` being detected as the wrong type of DTS. Fixes #3462.
* mkvmerge: SRT handling: whitespaces will now be stripped from the start &
  the end of each line of each entry, not just from the end of the last
  line. Part of the fix of #3470.
* mkvextract: SRT extraction: whitespaces will not be stripped from the start
  & end of the whole entry anymore. Part of the fix of #3470.
* MKVToolNix GUI: multiplexer: when adding multiple files that include certain
  file types (chapters, segment info and tag files) and when the choice where
  to add them is "all files to a single new tab", these certain file types
  will now be added in the newly added tab as well instead of the current tab
  that had already been open. Fixes #3469.
* build system: fixed compatibility with Ruby 3.2.0 by using `FileTest.exist?`
  instead of `File.exists?`, `Dir.exists?` & `FileTest.exists?` which were
  removed in that release.

## Build system changes

* MKVToolNix is now using & requiring Boost's "file system" and "system"
  libraries again instead of C++17's file system library. This is due to gcc's
  library not supporting UNC paths of types `\\?\C:\dir\file.ext`.

アップデート情報元 
https://mkvtoolnix.download/doc/NEWS.md

公式サイト
https://www.bunkus.org/blog/