Version 61.0.0 "In Your Eyes" [Listen on YouTube] New features and enhancements all: IETF BCP 47/RFC 5646 language tags: implemented support for officially registered IANA language tag extensions. mkvmerge: track selection: when using language tags for selecting which tracks to keep, mkvmerge will now use component-based language tag matching instead of comparing them verbatim. This means that only those components (language, region etc.) the user specified will be required to exist and be equal. For example, if a file contains three subtitle tracks with languages es (generic Spanish), es-MX (Spanish as spoken in Mexico) and es-ES (Spanish as spoken in Spain), the user can use --stracks es to match all three tracks or be more specific with e.g. --stracks es-MX which would only match one track. Similarly inverting the selection with e.g. --stracks !es would get rid of all three tracks, not just the one for the generic Spanish. MKVToolNix GUI: multiplexer: deriving track languages from file names: the GUI can now detect full BCP 47/RFC 5646 language tags in file names. Part of the implementation of #3173. MKVToolNix GUI: multiplexer: deriving track languages from file names: the default list of boundary characters now includes -. Part of the implementation of #3173. MKVToolNix GUI: multiplexer: the GUI now defaults to the "lower" process priority setting for new installations in order to leave more room for other applications, especially interactive ones. Up to and including v59 the default was the "normal" process priority. v60 changed that to "lowest", which turned out to be much slower on Windows for no real gain over "lower". The setting will be auto-corrected by the GUI if the settings file were saved last with a version between v60.0.0.0 & v60.0.0.17 & "lowest" & it is still set to "lowest". HEVC dumper development tool: the tool has been renamed to xvc_dump and extended to be able to dump AVC/H.264 bitstreams, too. It now also detects the type of bitstream framing (ISO 14496-15 vs. ITU-T H.264/H.265 Annex B). Bug fixes
