RedFFmpegatron 1.2.9 Release

Release notes

• Encoding Fix: Enforced UTF-8 encoding across all internal system calls (metadata retrieval, executable discovery, duration checks, etc.) to ensure stability across different regional system settings and prevent crashes with special characters;
• Tooltip Optimization: Metadata tooltips are now more compact (verbose tags filtered) and feature vertical screen boundary clamping to ensure they remain fully visible;
• Improved Stability: Added robust null-safety checks for subprocess outputs to prevent "NoneType" attribute errors during command execution.