OBS Studio 30.1 Beta 1

NOTE: This beta is **NOT** the Twitch Enhanced Broadcasting Beta. This beta does not include those features.
For more information on Twitch Enhanced Broadcasting, please see their announcement:
https://blog.twitch.tv/en/2024/01/08/introducing-the-enhanced-broadcasting-beta/

Note: NVIDIA users may need to update their GPU drivers to 531.61 or newer.

30.1 New Features
-----------------

* Enabled HDR for HEVC over RTMP [nquah]
* Reworked the Image Slideshow source [Lain-B]
  + The reworked Image Slideshow source loads files asynchronously and fixes an issue where the slideshow would loop before showing all images. To change existing Image Slideshow sources to the new version, you must recreate them. Existing Image Slideshow sources will continue functioning as before.
* Added Capture Audio option to window/game capture on Windows [derrod]
* Added Premultiplied Alpha option for game capture on Windows [jpark37]
* Added option for automatic cropping to bounding box [derrod]
* Added maxRGB tonemapper for SDR in HDR Tone Mapping filter [jpark37]
* Added GPU rescaling options for streaming and recording outputs [derrod]
* Added channel selection for CoreAudio input devices [PatTheMav]
* Added Capture Card Device source type on macOS [PatTheMav]
* Enabled multi-track audio support for mpegts [pkviet]
* Added AV1 support for VA-API [nowrep]
* Added AV1 support for WebRTC/WHIP output [Sean-Der]
* Added Video Capture Device (PipeWire) source type [GeorgesStavracas]

30.1 Changes
------------

* Added HDR support for the Elgato HD60 X Rev.2 [FBirth]
* Added theme data search paths [derrod]
* Added Lua script location to search path for Lua native libraries [Smartkin]
* Added Python 3.11 support for Windows and macOS [PatTheMav]
* Updated obs-websocket to version 5.4.0 [tt2468]
  + Release notes are here: https://github.com/obsproject/obs-websocket/releases/tag/5.4.0
* Improved simple mode replay buffer settings [gxalpha]
* Switched to bigger units in the UI for high bitrate/large recordings [derrod]
* Disabled Paste Transform on locked scene items [cg2121]
* Disabled Edit Transform if scene item is locked [cg2121]
* Removed Windows 7 and Ubuntu 20.04 NVENC fallbacks [derrod]
* PCM audio in (fragmented) MP4/MOV is now supported [derrod]

30.1 Bug Fixes
--------------

* Fixed crash when loading Python at runtime on Windows [PatTheMav]
* Fixed crash in Image Slideshow when adding a directory with no files in it [notr1ch]
* Fixed crash on macOS when attempting to stream to a WHIP servers with certain configurations [RytoEX/Sean-Der]
* Fixed crash when trying to stream with WebRTC/WHIP [CrackThrough]
* Fixed deadlock when adding a macOS Screen Capture source [PatTheMav]
* Fixed issue where OBS could be closed by docked browser panels [WizardCM]
* Fixed high CPU usage with Virtual Camera on macOS [jcm93]
* Fixed checkbox misalignment on macOS in properties view [nikola3211]
* Fixed audio track 1 audio being offset/desynced with other tracks [derrod]
* Fixed incorrect VST window size on HiDPI display [xlinshan]
* Fixed editable list UI element having incorrect background-color [tuduweb]
* Fixed the resize cursor with respecting the item transformation [BGM99]
* Fixed disk space reporting for attached network drives on macOS [PatTheMav]
* Fixed Safe Mode removing third-party transitions from scene collection [derrod]
* Fixed being unable to use QSV in the Flatpak package [twelho]
* Fixed audio track titles not being set in Custom FFmpeg Output [tuduweb]