Monthly Archives: July 2010

Matroska moving IRC channel to Freenode network

Regular users of the #matroska IRC channel on irc.corecodec.org have known for quite some time that the service offered by irc.corecodec.org wasn’t as stable and fast as they’d liked. The server has been down a couple of times or the connections unstable for days on end. Therefore the Matroska team decided that they move their channel over to the Freenode network. Freenode offers Free and OpenSource projects a stable and scalable home with the usual IRC services like channel and nick registration (ChanServ and NickServ respectively).

So join us in our new home: #matroska on Freenode.

mkvtoolnix v4.2.0 released

I’ve released mkvtoolnix v4.2.0. It contains a lot of bug fixes and a few enhancements but no major new features.

There are no changes for package maintainers in this release.

Here are the usual links: the home page, the source code and the Windows installer and 7zip archive.

All binaries that I provide myself have already been uploaded.

Here’s the full ChangeLog since release 4.1.1:


  • 2010-07-28 Moritz Bunkus <moritz@bunkus.org>
    • Released v4.2.0.
    • mkvmerge: bug fix: mkvmerge was accessing invalid memory In certain cases, e.g. when appending Matroska files that use compression while turning compression off.
  • 2010-07-27 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: bug fix: Splitting output files by size was basing its decision when to create a new file on an uninitialized variable. This caused effects like a lot of small files being created with sizes much smaller than the intended split size.
  • 2010-07-19 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: bug fix: The speed with which mkvmerge skips garbage in DTS tracks has been greatly improved.
  • 2010-07-18 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: enhancement: Reading Matroska files: DisplayWidth & DisplayHeight values that are obviously not meant to represent pixels but only to be used for aspect ratio calculation (e.g. 16×9) are converted into proper ranges based on the track’s PixelWidth & PixelHeight values and the quotient of DisplayWidth / DisplayHeight.
  • 2010-07-12 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: enhancement: Attachments will be rendered at the end of the file instead of at the beginning. The attachments will be placed after the cues but before the chapters. Fix for bug 516.
    • mkvmerge: enhancement: Header removal compression has been enabled by default for MPEG-4 part 10 (AVC/h.264) video tracks with a NALU size field length of four bytes.
    • mkvmerge: bug fix: Header removal compression has been deactivated for MPEG-4 part 2 (aka DivX/Xvid) video tracks due to incompatibility with packed bitstreams.
  • 2010-07-10 Moritz Bunkus <moritz@bunkus.org>
    • mmg: enhancement: The taskbar progress is reset as soon as mkvmerge finishes/as soon as all jobs are done (Windows 7).
  • 2010-07-06 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: bug fix: Fixed reading AVC/h.264 tracks from AVI files if they’re stored without NALUs inside the AVI. Was broken by a fix for handling AVC/h.264 in NALUs inside AVI.
    • mkvmerge: bug fix: All readers that only handled file formats which do not contain more than one track did not respect the “–no-audio / –no-video / –no-subtitles” options. This applied to the following readers: AAC, AC3, AVC/h.264, CorePicture, Dirac, DTS, FLAC, IVF, MP3, MPEG ES, PGS/SUP, SRT, SSA, TrueHD, TTA, VC1, WAV and WavPack.
  • 2010-07-05 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: enhancement: Improved reading text files that use mixed end-of-line styles (DOS & Unix mixed).
  • 2010-07-04 Moritz Bunkus <moritz@bunkus.org>
    • mkvmerge: bug fix: Fixed invalid memory access in the PCM packetizer. Fix for bug 510.
    • mmg: bug fix: When mmg starts it will check the entries in the file and chapter menu’s list of recently used files and remove those entries that no longer exist. Fix for bug 509.
    • mkvmerge: bug fix: Fixed a crash when reading Matroska files that were damaged in a certain way.

Have fun.