Bug Fixes

Fixed ValueError: could not convert string to float: in long_processing_task.py using latest FFmpeg versions.
Fixed enabling "Batch rename files" on switch_file_import method.
[TIMELINE] Fixed a bug in file import where the overall duration in the timeline would get stuck at 23.59.59.999.
[TIMELINE] Fixed the overall duration to 00:00:00.000 if no files were imported or selected. In these cases, the timeline controls will now be disabled.
Fixed bug when playing files with path names containing more than one space.
[FILE LIST] Fixed UnboundLocalError: by LEFT clicking on "Size" column headers using the latest FFmpeg versions (which changed unit names e.g. Mibyte to Mbyte etc.).
New Features

[AV/CONVERSIONS] New feature: Added the ability to set more parameters for subtitle streams, such as subtitle codec and map indexing.
[AV/CONVERSIONS] New feature: Added button to display the raw command line dialog.
[TIMELINE] New feature: Added ability to display waveform (resolve #140 feature request).
[TIMELINE] New feature (only available for Linux/FreeBSD/MacOS for now): Added a convenient playback feature to the timeline with some additions like a progress meter/cursor.
Other fixes and Improvements

[AV/CONVERSIONS] Added 16 more indexing selections for audio and subtitles.
[AV/CONVERSIONS] Removed OGV format from drop list because obsolete.
[AV/CONVERSIONS] Added subtitle stream item in Batch Mode summary dialog for user confirmation.
Updated command line and man page.
Improved tool tips for stream indexing controls.
Updated File_Catalog.txt .
Some code improvements and refactoring.
Using ffplay, the draw timestamp font size dependent on height of the video.
[TIMELINE] Improved GUI layout and usability.
[FROM VIDEO TO PICTURES] Removed the fifo filter for GIF creation because it was removed from recent versions of FFmpeg (it also seems unnecessary).
[STILL IMAGE MAKER] Iproved usability setting the images time interval.
Update Italian language (thanks to @bovirus and @jeanslack).
Update Russian language (thanks to ChourS)

Fix sorting words that are incompatible with the current locale (#778, #779, Oussama Jarrousse).
Add dark mode instructions to built-in help documentation (#848, @jendrikseipp).
Fix options dialog not closing when OK button is clicked (#857, @jendrikseipp).
Replace AppVeyor CI with GitHub Actions workflow for Windows builds (@jendrikseipp).

• DesktopOK language file updates
• Minor fixes in DesktopOK for Windows

? New & Reworked
Full Internationalization (i18n) Support: The application's code has been completely re-architected to support multiple languages and make community translations easy.

All user-facing text has been moved to modular language files (.json), allowing new languages to be added without changing the application's source code.
The language selection menu in the settings now displays language names in their native form (endonyms), such as "Deutsch" instead of "German". This is a global best practice that prevents users from getting "trapped" in a language they cannot read.
Overhauled Network Interface Monitoring: The ambiguous "Monitor All Interfaces" option has been replaced with a clear, explicit set of choices, giving users full control. The new modes are:

? Auto (Primary Interface): The smart default for most users.
? All Physical Interfaces: Aggregates speed from hardware like Wi-Fi and Ethernet while intelligently ignoring virtual adapters (VPNs, VMs).
? All Interfaces (including virtual): A new power-user option to monitor traffic from every adapter, including VPNs and virtual machines.
? Select Specific Interfaces: The existing manual selection mode.
? Preserved Stability Fixes from beta.4
This beta retains all the critical stability fixes from the previous version. The debounced refresh architecture is unchanged.

Definitive Fix for Disappearing/Flickering Widget: The robust solution for the widget flickering or disappearing when interacting with the desktop, taskbar, or RDP sessions is preserved.
RDP & Virtualization Stability: All fixes for Z-order issues and correct monitor association in RDP sessions remain in place.
? Continued Improvements
This beta retains all the successful improvements from the previous beta cycle:

Windows Server Startup Reliability: The fix for the Program Files (x86) startup path issue on 64-bit systems is still included.
Improved Decimal Formatting Clarity: The UI for setting decimal places has been redesigned to be more intuitive, with a single slider now controlling the number of decimal places (0, 1, or 2) for a more stable and consistent appearance.

New WolfSSL implementation for better performance.

fix for Youtube

[+] Добавлена настройка для выбора между lame_enc.dll и lame.exe для преобразования аудиоданных в MP3 (окно "Аудиофайлы", вкладка "Дополнительно").
[-] Исправлено использование Google TTS.
[*] Обновлен список языков для Google TTS.
[*] Обновлены болгарские, корейские, словацкие и чешские языковые ресурсы (спасибо Костадину Колеву, VenusGirl и Томашу Громадке).

Updated MPC-HC to version 2.5.2.24
Updated MPC Video Renderer to version 0.9.12.2445