Bringing a month’s worth of improvements and bug fixes, MKVToolNix 19.0.0 is here to update the mkvmerge component to take the first keyframe within 1ms of the requested value into consideration when splitting by duration, by timestamps or by timestamp-based parts. The new release also updates the GUI to allow users to save and restore the widths of columns in both the tree and list views, as well as to put a focus on the modified element when closing or reloading a modified file before asking for the user to confirm discarding unsaved changes.