Version 6.3.1

• Adding #745 #755 Settings option to play a sound when the queue completes, as a popup-free alternative to the completion message (thanks to Augusto7743)
• Adding #747 source frame rate (FPS) to the Video Info line under the source file (thanks to Augusto7743)
• Adding #762 Maxrate without Bufsize for NVEncC, QSVEncC and VCEEncC, which pick the VBV buffer size automatically (thanks to Augusto7743)
• Adding #765 subtitle track titles to the subtitle panel, so tracks can be told apart without checking MediaInfo (thanks to gojetablade)
• Fixing #750 Linux builds on Python 3.14 (such as the AUR package) failing to start and running out of memory, because the new forkserver default re-launched FastFlix endlessly; Linux now uses the fork start method as on Python 3.13 (thanks to cinnamonmatexfce)
• Fixing #756 Burn In toggle showing unticked when editing a subtitle track again after an encode, and burned-in text subtitles being stretched after cropping or rotating (thanks to eikixsh)
• Fixing #761 Remove Metadata not clearing subtitle track metadata for NVEncC, QSVEncC and VCEEncC (--sub-metadata clear on copied tracks only) (thanks to Augusto7743)
• Fixing #764 portable FastFlix sharing queue.yaml, history and logs with the installed version in AppData; portable mode now keeps them in a fastflix_data folder next to its fastflix.yaml (thanks to Egosumumbravir)
• Fixing #767 OpenCL detection passing the invalid -log_level option to FFmpeg instead of -loglevel (thanks to cinnamonmatexfce)
• Fixing #771 Copy Dolby Vision not explaining that rigaya encoders only output BL+RPU, so dual-layer profile 7 sources become profile 8.1 (tooltip and README note) (thanks to Jared Markell)
• Fixing #772 #773 Start/End time losing millisecond precision (01:05:45.003 was sent to FFmpeg as 3945.3); times now parse leading-zero fractions correctly and display with millisecond precision (thanks to SkyAprilGit)
• Fixing #774 Windows installer builds failing to detect GPUs ("No module named 'pywintypes'") because the bundled embeddable Python never processed pywin32.pth; the pywin32 directories are now added to python313._pth, and a WMI failure now skips GPU detection instead of aborting the startup task (thanks to bhazard451)