Fastflix

* Adding QP mode for FFmpeg Nvenc encoding
* Adding more preview positions
* Adding ultra high quality mode for ffmpeg nvenc encoder
* Adding Ubuntu 24.04 builds
* Adding 633 download for stable version of ffmpeg by default on Windows (thanks to Maddie Davis)
* Fixing 611 Extension type not being selected properly from profiles if encoders isn't switched (thanks to Hankuu)
* Fixing 628 Custom QP/CRF saved in profile may not be restored correctly (thanks to Gregorio O. DeMojeca)
* Fixing 631 VVC Level can't be set to 0 anymore (thanks to GT500org)
* Removing Ubuntu 20.04, 22.04 and Mac 12 builds

* Fixing 610 Do not try to divide by zero if HDR metadata has bad values (thanks to Noelle Leigh)
* Fixing 616 replace correct cmd line option for IDC level (thanks to pkleinejaeger)
* Fixing too long of log file names could crash, limiting filename to 220 characters (thanks to ProFile)
* Removing code signing as cert has expired

* Fixing 598 'dict' object has no attribute 'to_yaml' (thanks to dmo marillat)
* Fixing 599 Italian language translations (thanks to bovirus)
* Fixing 600 Update NSIS installer script 601 to include Italian (thanks to bovirus)
* Fixing 603 Themes stylesheet aren't included in python package (thanks to dmo marillat)
* Fixing 605 HDR2SDR double tonemapping in Rigaya NVENC and QSV Encoders (thanks to Darksyderz)

* Adding 283 support for experimental DTS (dca) audio by adding -strict -2 (thanks to Sub7)
* Adding 354 M1 support (thanks to Nhunz and Anton)
* Adding 536 Improve Profiles - save advanced options (thanks to CelticTaonga and DCNerds)
* Adding 568 center app on startup (thanks to Viet-Duc Le)
* Adding 587 Distribute a mac app bundle (thanks to Ivan Novokhatski)
* Adding 589 support for pydantic 2.x (thanks to dmo marillat)
* Adding 592 Add alpha channel for VP9 (thjanks to subof)
* Fixing 185 audio channels not being set properly and resetting on encoder change (thanks to Tupsi)
* Fixing 522 add file fails - fixed as of 5.7.0 (thanks to pcl5x2008)
* Fixing 531 list limitation in readme that FFmpeg must support the software encoders listed (thanks to brunoais)
* Fixing 567 Profiles for WebP did not work (nor GIF dither) (thanks to jpert)
* Fixing 582 BT.2020-10 Color transfer not maintained (thanks to Ryushin)
* Fixing 585 error when trying to return a video from queue that has the video track after audio or subtitiles (thanks to Hankuu)
* Fixing 586 audio channels being set incorrectly (thanks to Hankuu)
* Fixing 588 audio and subtitle dispositions were not set from source (thanks to GeZorTenPlotZ)

* Fixing 579 Missing Infos and no Mouse-Over info in Subs-Panel since 5.7 (thanks to GeZorTenPlotZ)
* Fixing 578 Missing code signing to FastFlix exec inside of the installer (thanks to Sam Katakouzinos)
* Fixing 580 No Downmix key error on profile save (thanks to Hankuu)
* Fixing 581 Fastflix could not recognize hevc video containing hdr10plus metadata with recent ffmpeg build (thanks to alpha-0)

* Fixing 574 Downmix audio channels not working (thanks to eikixsh)
* Fixing audio and subtitle track count in queue