3.3.0

• Improved target-size accuracy by measuring preserved audio, encoded video packets, and container overhead during bitrate refinement
• Changed target-size units to decimal megabytes so configured limits match common upload-service limits
• Preserved every compatible source audio stream without re-encoding and added an option to completely omit audio
• Added clear errors when original audio cannot be preserved in MP4 or leaves insufficient room for viable video
• Added an experimental AV1 quality preset that prefers SVT-AV1 and falls back to libaom when necessary
• Preserved supported source bit depth, chroma format, color information, chapters, and metadata more consistently
• Made lossless-remux and encoded outputs apply the same audio, chapter, and metadata policy
• Changed automatic FFmpeg installation to download the latest Essentials build and verify its rolling SHA-256 checksum
• Added real-media integration coverage and reproducible video-quality comparison tooling