MKVToolNix is voorzien van een update naar versie 5.4.0. MKVToolNix is een collectie opensourceprogramma's waarmee Matroska-bestanden kunnen worden bekeken, bewerkt en geconverteerd. Zo kunnen bijvoorbeeld onnodige geluidssporen en ondertiteling worden verwijderd of juist als standaard worden ingesteld. Het zijn afzonderlijke commandline-tools, maar er wordt een grafische gebruikersinterface meegeleverd. Versies kunnen worden gedownload voor Windows, een groot aantal Linux-distributies en Mac OS X. In deze release zijn de volgende veranderingen en verbeteringen aangebracht:
Changes in version 5.4.0:
- mkvmerge: bug fix: Fixed wrong calculation of the maximum number of ns per cluster in certain fringe cases if timecode scale was set to "auto" mode ("--timecode-scale -1"). Fix for bug 707.
- build system: The C++ compiler must now support the C++11 keyword 'nullptr'. configure checks for it. For GCC this means at least v4.6.0.
- mkvinfo: new feature: mkvinfo will output the track ID that mkvmerge and mkvextract would use for a track. This information is shown alongside the "track number" element in verbose mode and in the track summary in summary mode.
- mkvmerge, mmg: enhancement: The "--default-duration" in mkvmerge and the "FPS" drop down box in mmg now accept "p" or "i" as a unit -- as in e.g. "25p" or "50i". Several commonly used values have been added to mmg's "FPS" drop down box and others removed.
- mkvmerge: bug fix: When using an external timecode file with AVC/h.264 video the default duration will be set to the most-often used duration in the timecode file.
- mmg: enhancement: Added the values "50", "60" and "48000/1001" to the list of commonly used values for the "FPS" input field.
- mkvmerge: bug fix: AVC/h.264 packetizer: The value given with "--default-duration" (after internal conversion from the unit given by the user to duration in nanoseconds) is now again interpreted as the duration of a frame and not of a field.
- mkvmerge: bug fix: SRT subtitles: timecodes can contain the minus sign before any digit, not just before the first one.
- mkvmerge: bug fix: Sometimes non-AC3 files were mistakenly for AC3 after the re-write of the AC3 handling code on 2012-02-26. This has been rectified. Fix for bug 723.
- mkvmerge: enhancement: mkvmerge will keep the "enabled" track header flag when muxing. mkvmerge will also output its value in verbose identification mode as "enabled_track".
- mkvmerge: enhancement: MicroDVD text subtitles are recognized as an unsupported format instead of an unknown format.
- mmg: The warning that no default duration/FPS has been given for AVC/h.264 tracks has been removed.
- mkvmerge: bug fix: Complete re-write of the timecode handling code for AVC/h.264 tracks. Now handles several cases correctly: interlaced video, video with multiple or changing SPS with different timing information. The timing information is extracted from the bitstream. Therefore the user doesn't have to specify the default duration/FPS himself anymore. Fix for bugs 434 and 688.
- build system: Boost's "rational" library is now required.
- mkvmerge: bug fix: Complete re-write of the (E)AC3 parsing and handling code. Dependent EAC3 frames are now handled correctly. Fix for bug 704.
- mkvmerge: bug fix: The width and height of h.264 video tracks with a pixel format other than 4:2:0 are now calculated correctly. Fix for bug 649. Patch by Nicholai Main (see AUTHORS).
- mkvmerge: bug fix: Fixed file type recognition and frame drops for VC1 elementary streams that do not start with a sequence header but with frame or field packets instead.
- mkvmerge: bug fix: Fixed mis-detection as unsupported DV files (happened for e.g. PGS subtitle files).
- doc: enhancement: Updates for option file usage and supported subtitle formats.
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