MKVToolnix 48

June 28, 2020 - Software
MKVToolnix 48

MKVToolNix is the one of the best collection of tools (mkvmerge, mkvinfo, mkvextract, mkvpropedit and mmg) for modifying MKV files.

The graphical user interface (GUI) of the program allows you to manipulate Matroska (MKV) files in several ways.

You can use those tools to create, split, edit, mux, demux, merge, extract or inspect Matroska files.

MKVToolnix will also work with other video formats. Such as AVI, MPEG, MP4, MPEG, Ogg/OGM, RealVideo, MPEG1/2, H264/AVC, Dirac, VC1.

And more as well as some video codecs such as VP9 video codec support – reading from IVF, Matroska, WebM files, extract to IVF files.

Moreover the program can work with audio files such as AAC, FLAC, MP2, MP3, AC3, DTS/DTS-HD, Vorbis, RealAudio. And also work with most subtitle formats including SRT, PGS/ SUP, VobSub, ASS, and SSA.

It is a cross-platform application that will work on Microsoft Windows (both 32 and 64-bit versions), Apple macOS and Linux operating systems.

Here is also the portable version which does not require installation. You just need to start the function. It can also be stored on external devices and run on any computer you have access to.

# Change Log

# Version 48.0.0 “Sick Of Losing Soulmates” 2020-06-27

## New features and enhancements

* mkvmerge: AC-3: file identification will report AC-3 tracks encoded in Dolby

Surround EX as codec “AC-3 Dolby Surround EX”. Implements #2740.

* MKVToolNix GUI: multiplexer: on new installations the GUI will now recognize

all known ISO 639-2 language codes in file names by default instead of only

the top 100 of languages by native speakers.

* MKVToolNix GUI: multiplexer: on new installations the list of “often used

languages” will by default only contain certain agnostic ones (“multiple

languages”, “no linguistic content”, “reserved for local use”, “uncoded

languages”), “English” and the default user interface language. The “list of

spoken languages by native speaks” isn’t used anymore. Also implements #2716.

* MKVToolNix GUI: header editor: added an option to remove all attachments to

the tree context menu. Implements #2835.

* MKVToolNix GUI: while the GUI is running it will remember the last page that

was selected when the preferences dialog is closed. Upon re-opening the

preferences that page will be selected by default. Implements #2852.

## Bug fixes

* mkvmerge: fixed a segmentation fault when exiting prematurely due to write

errors such as the destination having run out of space. Fixes #2843.

* mkvmerge: DTS: fixed wrong channel count for DTS tracks with XCh

extensions. Fixes #2715.

* mkvmerge: MPEG TS reader: fixed detecting h.264/AVC and h.265/HEVC tracks

that consist of only a single frame. Part of the fix of #2849.

* mkvmerge: MPEG TS reader: fixed handling of unbounded PES sizes for tracks

that consist of only a single PES packet. Part of the fix of #2849.

* mkvmerge: MPEG TS reader: PGS subtitle tracks are now exempt from the

“detect bogus subtitle timestamps” heuristic which could lead to some PGS

subtitles not being timestamped correctly. Symptoms were that they were

shown at the wrong time or that they were shown indefinitely. Fixes #2736

and partially fixes #2824.

* mkvmerge: MPEG TS reader: when reading MPLS playlists the start timestamps

of a play items were handled wrong: all the timestamps of packets read were

compared to that start timestamp, dropping those packets whose timestamps

were smaller than the play item’s start timestamp. The correct behavior is

to accept all packets as soon as the first one with a timestamp equal to or

larger than the play item’s start timestamp is encountered. This could

result in PGS subtitle entries located right at the start of the play item

being garbled/lost as they consist of multiple PES packets for which some

timestamps are often slightly smaller. Part of the fix of #2824.

* mkvmerge: MPEG TS reader: when reading MPLS playlists mkvmerge will no

longer read the whole M2TS files they reference, processing only the packets

lying inside the timestamp range given by the playlists’s play item’s start

& end timestamps. Instead mkvmerge will use the index information present in

corresponding clip information (CLPI) files in order to seek to the nearest

file position of the play item’s start timestamp. Additionally mkvmerge will

simply stop processing a file once the end timestamp is seen. This change

greatly speeds up processing files from which only small portions must be

read. Part of the fix of #2824.

* mkvmerge: WavPack: fixed support for files created by v5 of the

program. Checksums, DSD audio data and non-standard sampling rates are

handled correctly. Patch by David Bryant.

* MKVToolNix GUI: multiplexer: fixed the cursor being positioned wrong after

entering or pasting characters that aren’t allowed in file names into the

“destination file” control. Fixes #2855.

## Build system changes

* libEBML v1.4.0 and libMatroska v1.6.0 are now required.

## Other changes

* The source code repository’s main development branch was renamed to `main


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