MKVToolNix 53.0.0 (32-bit)

What's new in this version:

New features and enhancements:
- mkvmerge: AVI reader: added support for reading the video aspect ratio from the video properties header (`vprp` chunk) if present and setting the display dimensions accordingly. Implements
- mkvmerge: MP4 reader: for h.264/AVC tracks that don't have an AVCConfigurationBox` (`avcC` atom) in their sample description (`stsd`) atom or whose `avcC` atom contains no content `mkvmerge` will now re-derive the `AVCConfigurationBox` from the bitstream
- mkvextract: mkvextract will now check if any of the destination file names is the same as the source file name and abort with an error if that's the case
- MKVToolNix GUI: when querying the user for a file name for saving things e.g. multiplexer settings or an attachment in the header editor), the automatically suggested file name will now be based on the situation-specific file names (e.g. the destination file name for multiplexer settings or the attachment's name when saving an attachment in the header editor) instead of the directory's name
- MKVToolNix GUI: multiplexer: when deriving track languages from file names the GUI will now select the right-most match instead of the left-most
- one. For example, "La.vie.en.rose.(fr).srt" will now be detected as French fr) instead of English (en)
- MKVToolNix GUI: preferences: the items in the "pre-defined …" lists can now be renamed by double-clicking with the mouse or pressing the F2 key. Windows installer: the `bluray_dump` command-line utility will be installed into the `tools` sub-directory. `bluray_dump` can read & dump certain file types used on Blu-rays: `.mpls` playlists, `.clpi` clip information databases, `.bdmv` index files, `bdmt_….xml` disc library databases and tnmt_….xml` track & chapter name databases.

Bug-fixes:
- mkvmerge: stretching chapter timestamps with `--chapter-sync` now works correctly with floating point values including fractions of floating point numbers (e.g. `12.3/45.67`). The tooltips in the GUI have been adjusted accordingly
- mkvmerge: MPEG 1/2 video handling: the "default duration" header field was often half the value it actually should be, resulting in all video frames having an explicit block duration with the correct value
- mkvmerge: MPEG 1/2 video handling: the data stored in `Codec private` and Codec state` doesn't contain extensions other than sequence & sequence display extensions anymore
- mkvmerge: tag handling: when remuxing a Matroska file with the no-track-tags`, existing `SOURCE_ID` track tags are now skipped, too
- MKVToolNix GUI: multiplexer: the drop-down boxes with pre-defined track names now follow the order set in the preferences instead of sorting the entries alphabetically