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[Frontpaged] MKVToolNix 57.0.0


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MKVToolNix 57.0.0



May 22, 2021

Changelog: https://mkvtoolnix.download/doc/NEWS.md

# Version 57.0.0 "Till The End" 2021-05-22

## New features and enhancements

* mkvmerge: MP4 reader: added support for reading Dolby Vision from MP4 files
  (FourCCs `dvh1` and `dvhe`; configuration records `dvcC`, `dvvC` and `hvcE`
  will be converted into block addition mappings). Implements #2784.
* mkvmerge: SRT subtitles: mkvmerge now accepts empty text files with the
  extension `.srt` as SRT subtitle files, enabling the creation of empty SRT
  tracks. Implements #3089.
* mkvmerge, mkvextract: HEVC/H.265: access unit delimiter NALUs will no longer
  be discarded, neither during muxing nor during extraction.
* MKVToolNix GUI: preferences: switched the order & wording of controls in the
  "enabling items" panel to make it clearer that certain controls define
  exceptions. Inspired by 3086.

## Bug fixes

* mkvmerge: HEVC/H.265 parser: several NALU types, notably the Dolby
  Vision-specific NALUs ("unspecified 62" and "unspecified 63") and suffix SEI
  NALUs, are now stored with the frame they belong to instead of with the next
  frame. Part of fixing & implementing #2784, #2818, #3093 and #3113.
* mkvmerge: HEVC/H.265 packetizer: fixed setting the track's default duration
  when reading HEVC/H.265 from Matroska files that don't have a default
  duration set.
* mkvmerge: HEVC/H.265 packetizer: fixed the calculation of the duration of
  frames so that `SimpleBlock` elements can be used again instead of
  `BlockGroups` with `BlockDuration` elements. Fixes #3114.
* mkvmerge, mkvextract: HEVC/H.265 parser: fixed issues with ordering &
  duplication of certain NALUs (parameter set & prefix SEI NALUs). Part of
  fixing & implementing of #2784, #2818, #3093 and #3113.
* MKVToolNix GUI: multiplexer: when dragging & dropping files to the
  multiplexer, the source directory will be remembered as the "last open
  directory" again, causing subsequent uses of the "open file" dialog to start
  in the same directory. Fixes #3110.
* mkvinfo: fixed the position of frames in block groups containing "block
  duration" elements in summary mode (e.g. for subtitle tracks).

## Build system changes

* `configure` will now try to detect `libmagic` via `pkg-config` and fall back
  to including & linking directly if it cannot be found via `pkg-config`.




Installer - https://mkvtoolnix.download/windows/releases/57.0.0/mkvtoolnix-64-bit-57.0.0-setup.exe

Portable - https://mkvtoolnix.download/windows/releases/57.0.0/mkvtoolnix-64-bit-


Installer - https://mkvtoolnix.download/windows/releases/57.0.0/mkvtoolnix-32-bit-57.0.0-setup.exe

Portable - https://mkvtoolnix.download/windows/releases/57.0.0/mkvtoolnix-32-bit-

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