Audacity is a free, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. The interface has been translated into many languages.
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Features:
Recording - Audacity can record live audio through a microphone or mixer, or digitize recordings from cassette tapes, records or minidiscs. With some sound cards, and on any Windows Vista, Windows 7, 8 or 10 machine, Audacity can also capture streaming audio.
Import and Export - Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in many different file formats, including multiple files at once. Import and export WAV, AIFF, AU, FLAC and Ogg Vorbis files. Sound Quality: Supports 16-bit, 24-bit and 32-bit (floating point).
Editing - Easy editing with Cut, Copy, Paste and Delete. Edit and mix large numbers of tracks. Multiple clips are allowed per track.
Accessibility - Excellent support for JAWS, NVDA and other screen readers on Windows, and for VoiceOver on Mac.
Effects - Change the pitch without altering the tempo (or vice-versa). Remove static, hiss, hum or other constant background noises. Alter frequencies with Equalization, Bass and Treble, High/Low Pass and Notch Filter effects. Adjust volume with Compressor, Amplify, Normalize, Fade In/Fade Out and Adjustable Fade effects.
Kaltura is an online video platform that allows publishers and content owners to publish and manage their video and other rich-media content.
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Tutorials and Information
Video Upload and Ingestion - Easily upload and ingest video, audio, images and docs. Bulk or individual file uploads, via browser, desktop app, email or mobile.
Video Publishing - Publish the best quality video across any device - mobile, PC or set-top-box. Broadcast live videos.
Video Streaming - Stream the best quality video, with full security and control.
Video Management - Organize your content, search media, edit, moderate, create playlists, and much more - all in one intuitive interface.
Video Editing Tools - Trim videos to create clips, add subtitles, and cue points to enable chaptering, advertising and deep search