Monthly Archives: April 2014

MKVToolNix v6.9.1 released


I’ve released MKVToolNix 6.9.1 mere hours after the release of 6.9.0 due to a severe bug that wasn’t present in 6.8.0. Here’s the combined announcement for both releases.

There were the usual bug fixes all over the place. No major new features, but it was time for a new release.

You can download the source code or one of the binaries. Note that binaries for 6.9.1 are still being built and may not be available for download yet.

Here’s the full ChangeLog since release 6.8.0:

  • 2014-04-18 Moritz Bunkus <>
    • Released v6.9.1.
    • mkvmerge: bug fix: fixed huge memory usage when probing files (it was reading the whole file into memory for that).
    • Released v6.9.0.
    • all: new feature: added a Brazilian Portuguese translation of the programs by Thiago Kühn (see AUTHORS).
    • mkvpropedit, mmg’s header editor: bug fix: fixed a failed assertion in libEBML when writing the same changes twice to certain files (those for which a seek head with a single entry pointing to the elements modified by mkvpropedit/mmg’s header editor; e.g. x264 creates such files). Fixes #1007.
  • 2014-03-22 Moritz Bunkus <>
    • mkvmerge: bug fix: reading fonts embedded in SSA/ASS files was sometimes truncating the attachments created from them. Fixes #1003.
    • mkvmerge: bug fix: fixed display of very large IDs during attachment extraction.
    • mkvmerge: enhancement: improved file type detection speed for text subtitle formats.
  • 2014-03-10 Moritz Bunkus <>
    • mkvextract: bug fix: during the extraction of chapters, tags or segment info XML files with the –redirect-output parameter the BOM (byte order mark) was written twice.
  • 2014-03-05 Moritz Bunkus <>
    • mkvmerge: bug fix: MPEG TS: timestamp outliers are ignored if they differ at least five minutes from the last valid timestamp. Fixes #998.
    • mkvmerge: enhancements: trailing zero bytes will be removed from AVC/h.264 NALUs. Implements #997.
  • 2014-03-04 Moritz Bunkus <>
    • mkvmerge: bug fix: fixed timestamp assignment for AVC/h.264 videos in which recovery point SEIs occur in front of the second field of two interlaced fields.

Have fun.