Log Message:
mpv: Update to 0.33.0

pkgsrc changes:
 - Remove `ass' option: libass is now always needed and enabled
 - Add `openal' option to enable openal ao (disabled by default)
 - Remove pkgsrc patches ao-s that were removed in 0.33.0 (a possible
   patch for oss ao is under discussion upstream:
   https://github.com/mpv-player/mpv/pull/8312 )

Changes:
0.33.0
======
Features
--------
Added
~~~~~
- scripting: load scripts from directories
- mac: activate logging when started from the bundle
- ytdl_hook.lua: delay load subtitles
- sub: add an option to filter subtitles by regex
- scripting: add a way to run subprocesses as "scripts"
- command: implement asynchronous commands and support for named arguments
- player: add optional separate video decoding thread
- vo_gpu: d3d11: add support for exclusive fullscreen
- w32_common: Support HiDPI on Windows
- vo_x11: add 10 bit support
- vo_gpu: add BT.2390 tone-mapping
- client API: add software rendering API
- audio: add scaletempo2 filter based on chromium
- auto_profiles: add this script
- stream: Implement slice:// for reading slices of streams
- player: add automatic loading of external cover art files
- vo_sixel: implement terminal video output using sixel

Changed
~~~~~~~
- sws_utils: use zimg by default if available
- build: pick up Lua 5.2 by default (preferred over 5.1)
- build: disable RPI vendor blob auto-detection in favor of open-source stack
- build: make C11 atomics mandatory
- build: make libass non-optional
- player: stricter filename matching for external subtitle auto-loading
- lua: support Unicode paths in script loading and IO library
- vo_direct3d: rip out texture video rendering path and dumb down OSD rendering
- audio: rewrite internal audio handling and AO API
- build: disable GLX by default

Removed
~~~~~~~
- stream_libarchive: disable tar support due to bugs
- Remove remains of Libav compatibility
- stream_smb: remove due to lack of thread safety and the abundance
  of alternatives, FFmpeg still includes SMB support
- command: remove legacy hook API (has been deprecated for a long time)
- client API: remove deprecated qthelper.hpp header
- removed audio outputs: sndio, rsound, oss
- x11: remove xdg-screensaver invocations that supported dbus based idle inhibit
- client API: deactivate the opengl_cb API
- build system: drop Python 2 compatbility

Options and Commands
--------------------
Added
~~~~~
- demux: add option to disable cache "sharing" between back and \ 
forward buffers
- player: add ab-loop-count option/property
- ytdl_hook: add a way to use ytdl's default formats
- ytdl_hook: add all_formats option that loads all formats that were found
- demux_mkv: document probe-start-time option and enable it by default
- command: extend osd-overlay command with bounds reporting
- player: a number of new playlist contol commands/properties
- ipc: add --input-ipc-client option
- options: add option to control display-sync factor
- vo_gpu: add better gamut clipping option
- vo_gpu: vulkan: add ability to disable events
- x11: add option to make window appear on a specific workspace
- wayland: expose wayland-app-id as a user option
- player: add --subs-with-matching-audio option
- command: add read-only focused property
- screenshot: option to use software rendering for screenshots
- command: add delete-watch-later-config
- command: new property mouse-pos with current position and hover state

Changed
~~~~~~~
- options: remove deprecation warning for "-foo bar" syntax
- player: make audio hr-seek default
- ad_lavc: disable decoder downmix by default
- command: support save-position-on-quit for "stop" command too
- command: extend subprocess command
- options: do not accept ":" as separator anymore in key/value lists

Deprecated
~~~~~~~~~~
- demux: deprecate --cache-secs

Removed
~~~~~~~
- wayland: remove wayland-frame-wait-offset option
- input: remove deprecated --input-file option
- vo_vdpau: remove deprecated/inactive --vo-vdpau-deint option

Fixes and Minor Enhancements
----------------------------
- options: stop hiding deprecated options from --help output
- lua, js: add mp.get_script_directory() function
- lua: fix security relevant loading order issue with scripts
- player: make screenshot each-frame mode more accurate
- bash completion: complete ao/af/vo/vf options
- zimg: add alpha support
- wayland: make resizing better
- edl: add mechanism for delay loading streams
- stream_file: fix caching-related performance regression on CIFS
- cocoa-cb: fix crashes and issues with UI updates
- sub, demux: improve behavior with negative subtitle delay/muxed subs
- demux: make seek ranges work for static images + audio
- cocoa-cb: support maximize/minimize on startup
- umpv: change from legacy FIFO to socket
- stats: move input speed to cache page, make it a graph
- stats: add fourth page with performance graphs
- command: print edition title to OSD when cycling
- zimg: add support for big endian input and output
- demux_mkv: add png intra support
- build: detect VT_GETMODE on FreeBSD and DragonFly
- win32: use windows 10 native virtual-terminal if available
- vo_gpu: enable frame caching for still frames
- command: add property to return text subtitles in ASS
- vo_gpu: ra_pl: add timers support
- build: allow vo_wlshm on more Wayland platforms (e.g. FreeBSD)
- zimg: add slice threading and use it by default
- command: add a way to access properties of a current track
- vo_gpu: EGL: fix transparency on X11/EGL/Mesa
- vd_lavc: add AV1 to the default allowed hwdec codec list