mkvtoolnix gui split files keeps adding extra few seconds

mkvmerge: added support for the 'video projection' track header attributes.Additionally, push buttons to move them up & down are shown if the corresponding option is enabled in the preferences. MKVToolNix GUI: job queue: selected jobs can now be move up and down by pressing the `Ctrl+Up` and `Ctrl+Down` keys.MKVToolNix GUI: header editor: added support for the 'video projection' track header attributes.MKVToolNix GUI: header editor: added support for editing the video colour attributes.If enabled, only source files containing video tracks will be used for setting the destination file name. MKVToolNix GUI: multiplex tool: added an option in the preferences on 'Multiplexer' → 'Output' labeled 'Only use the first source file that contains a video track'.It will also force setting the destination file name once if automatic destination file name generation is turned off in the preferences.

It will force the GUI to consider the selected file to be the reference for automatically setting the file name, no matter which file was originally added as the first file. MKVToolNix GUI: multiplex tool: added a new entry to the 'source files' context menu labeled 'Set destination file name from selected file's name'.

Mkvtoolnix gui split files keeps adding extra few seconds