LEADTOOLS Multimedia SDK

LEADTOOLS Multimedia SDK provides a comprehensive set of DirectShow and Media Foundation filters for audio and video processing. It offers developers tools to implement features such as playback, capture, conversion, and processing of multimedia content within .NET and C/C++ appl

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• VQEG P.1203 Software Tools PageVideo Quality Experts Group's index of ITU-T P.1203/.1/.2 QoE model implementations (video and audio quality modules).
• subconv — SCC (CEA-608) to WebVTT converterRuby library converting SCC (EIA-608/CEA-608) caption files to WebVTT; niche 608 conversion path.
• metadata — Rust FFmpeg-backed media metadata parserRust CLI (FFmpeg-backed) parsing and formatting media metadata for human consumption; MediaInfo/ffprobe alternative.
• Cavern — object-based audio engine (Atmos render)Object-based audio engine and codec pack: Dolby Atmos rendering, HRTF, room correction, unlimited objects (C#).
• libspatialaudio — VideoLAN spatial audio rendererSpatial audio renderer supporting ADM objects, Higher-Order Ambisonics and IAMF; from VideoLAN, actively maintained.
• SceneSeg (Local-to-Global Scene Segmentation)CVPR 2020 multimodal movie scene segmentation using place and audio features on the MovieNet dataset; reference ML baseline with code.
• butteraugli (Rust port)Pure Rust port of Butteraugli from libjxl with XYB color, visual masking, and multi-scale bands, validated to within 0.001% of the referenc…
• SimpleVQADeep-learning no-reference video quality assessment for user-generated content, in PyTorch with SlowFast feature extraction.
• IMFTool — IMF CPL editor with IMSC subtitlesOpen-source editor for IMF (Interoperable Master Format) Composition Playlists with IMSC1 text-profile subtitle decode/render/preview.
• AutoSubSyncSubtitle auto-sync GUI wrapping ffsubsync/autosubsync/alass; can sync against a reference subtitle instead of the video.