Software update: MKVToolnix 73.0.0

Moritz Bunkus has released version 73 of MKVToolNix. This open source program allows viewing, editing and converting matroska files. Sound tracks and subtitles can be added, removed or set as default. MKVToolNix is ​​a collection of separate commandline tools, but a graphical user interface is also included. Downloads are available for Windows, macOS and various Linux distributions. The following changes and improvements have been made in this release:

New features and enhancements

• mkvmerge: greatly enhanced the speed of Base64 decoding which is used eg when reading pictures embedded in Ogg or FLAC files or for binary data inside XML chapter & tag files. Even small blocks of data could take unreasonably long.
• mkvmerge: added support for reading HEVC/H.265 video from FLV containers. Implements #3466.

Bug fixes

• mkvmerge: splitting: fixed a typo in the string output in GUI mode regarding the timestamps before which splitting was done. See #3421.
• MKVToolNix GUI: job output: after having run multiple jobs the “Clear output” functionality only reset the visible parts. However, using the “save output” function would also save the output generated before the user used “clear output”. Now only the output after the last use of “clear output” is saved. Fixes #3438.
• build system: when trying for the FLAC library the Ogg libraries will be linked with the compiled test program as well. This fixes detection if the pkg-config settings for FLAC don’t list Ogg & the linker doesn’t find the library automatically (eg for my macOS builds). Fixes #3439.