Nouveautés & Corrections
- mkvmerge: AAC: added support for LOAS/LATM files with channel configuration indexes 9–21 (e.g. channel count 22.2 for index 13) according to Rec. ITU-R BS.1196-7 & ISO/IEC 23008-3:2019.
- mkvmerge: HEVC/H.265 parser: fixed invalid memory access that could happen when reading certain types of HEVC data (e.g. with changing parameter sets mid-stream) from certain containers (e.g. Matroska). This bug was introduced in release 56.0.0.
- mkvextract: AAC: mkvextract will now abort with an useful error message when the user tries to extract a track whose 'audio-specific config' element in`CodecPrivate` signals a number of channels of 7 or greater than 8 as that isn't supported by the ADTS format.
- configure: the `--enable-ubsan` option hasn't actually enabled anything since release 39.0.0.
- mkvmerge, mkvpropedit: tags: the programs will no longer write tag elements that are mandatory and set to their default value (e.g. "tag language" set to `und` = undetermined).
- mkvmerge, mkvpropedit, MKVToolNix GUI chapter editor: chapters: the programs will no longer write chapter elements that are mandatory and set to their default value (e.g. "chapter language" set to `eng` = English or "Chapter flag enabled" = 1).
- mkvextract: chapters: mkvextract will no longer add a `ChapterLanguage` element set to `eng` to the generated XML content if the source file doesn't contain such an element.
- MKVToolNix GUI: multiplexer: when using the "tab widget below the files & tracks" layout option for the track properties the elements in the "general options" tab will use six rows à four columns instead of twelve rows à two columns, greatly reducing the required height.
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