Mixxx

Mixxx is free, open source DJ software that gives you everything you need to perform live mixes. Mixxx is a complete package for amateur and professional DJs alike, providing everything you need to create live mixes. Mixxx supports advanced features like comprehensive MIDI controller support, vinyl control, and multi-core CPU support.

Full Feature List

• Parallel waveform displays
• Waveform summaries
• MP3, OGG, WAVE, and FLAC playback
• Pitch-independent time stretch (key lock)
• Vinyl emulation
• Wave recording
• Free, open source software
• BPM detection and estimation
• Supported MIDI controllers
• Multichannel soundcard support (playback and capture)
• Multiple soundcard support
• Cross-platform (Windows XP and Vista, Mac OS X, Linux)
• Adjustable EQ shelves
• Crossfader curve control
• Skinnable interface with extra skins bundled
• Advanced MIDI scripting engine
• Adjustable pitch range
• Multi-core CPU support
• 24-bit/96000 Hz playback and capture
• Crystal clear audio
• Hardware video acceleration
• Vinyl control support

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MediaInfo

MediaInfo supplies technical and tag information about a video or audio file. It is free software (free of charge and free access to source code: GPL or LGPL licence).

What information can I get from MediaInfo?

• General: title, author, director, album, track number, date, duration...
• Video: codec, aspect, fps, bitrate...
• Audio: codec, sample rate, channels, language, bitrate...
• Text: language of subtitle
• Chapters: number of chapters, list of chapters

DivX, XviD, H263, H.263, H264, x264, ASP, AVC, iTunes, MPEG-1, MPEG1, MPEG-2, MPEG2, MPEG-4, MPEG4, MP4, M4A, M4V, QuickTime, RealVideo, RealAudio, RA, RM, MSMPEG4v1, MSMPEG4v2, MSMPEG4v3, VOB, DVD, WMA, VMW, ASF, 3GP, 3GPP, 3GP2

What format (container) does MediaInfo support?

• Video: MKV, OGM, AVI, DivX, WMV, QuickTime, Real, MPEG-1, MPEG-2, MPEG-4, DVD (VOB)...
• (Codecs: DivX, XviD, MSMPEG4, ASP, H.264, AVC...)
• Audio: OGG, MP3, WAV, RA, AC3, DTS, AAC, M4A, AU, AIFF...
• Subtitles: SRT, SSA, ASS, SAMI...

What can I do with it?

• Read many video and audio file formats
• Different methods of viewing information (text, sheet, tree, HTML...)
• You can customise these views
• Exporting information as text, CSV, HTML...
• Graphical Interface, Command Line, or DLL
• Integration with MS-Windows shell (drag 'n' drop, and Context menu)
• Internationalisation: Any language display on any version of your operating system
• Localisation capability (but volunteers needed)

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LAME

LAME is a high quality MPEG Audio Layer III (MP3) encoder licensed under the LGPL. LAME is considered the best MP3 encoder at mid-high bitrates and at VBR, mostly thanks to the dedicated work of its developers and the open source licensing model that allowed the project to tap into engineering resources from all around the world. Both quality and speed improvements are still happening, probably making LAME the only MP3 encoder still being actively developed.

Following the great history of GNU naming, LAME originally stood for LAME Ain't an Mp3 Encoder. LAME started life as a GPL'd patch against the dist10 ISO demonstration source, and thus was incapable of producing an mp3 stream or even being compiled by itself. But in May 2000, the last remnants of the ISO source code were replaced, and now LAME is the source code for a fully LGPL'd MP3 encoder, with speed and quality to rival and often surpass all commercial competitors.

LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to use the open source model to improve the psycho acoustics, noise shaping and speed of MP3. LAME is not for everyone - it is distributed as source code only and requires the ability to use a C compiler. However, many popular ripping and encoding programs include the LAME encoding engine, see: Software which uses LAME.

Using the LAME encoding engine (or other mp3 encoding technology) in your software may require a patent license in some countries.

LAME features:

• Many improvements in quality in speed over ISO reference software. See history.
• MPEG1,2 and 2.5 layer III encoding.
• CBR (constant bitrate) and two types of variable bitrate, VBR and ABR.
• Encoding engine can be compiled as a shared library (Linux/UNIX), DLL , Directshow filter or ACM codec (Windows).
• Free format encoding and decoding.
• GPSYCHO: a GPL'd psycho acoustic and noise shaping model.
• Powerful and easy to use presets.
• Quality better than all other encoders at most bitrates.
• Fast! Encodes faster than real time on a PII 266 at highest quality mode.
• MP3x: a GTK/X-Window MP3 frame analyzer for both .mp3 and unencoded audio files.

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MP3Gain

MP3Gain analyzes and adjusts mp3 files so that they have the same volume. MP3Gain does not just do peak normalization, as many normalizers do. Instead, it does some statistical analysis to determine how loud the file actually sounds to the human ear. Also, the changes MP3Gain makes are completely lossless. There is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding.

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Audacity

Audacity is a free, easy-to-use and multilingual audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. You can use Audacity to:

• Record live audio.
• Convert tapes and records into digital recordings or CDs.
• Edit Ogg Vorbis, MP3, WAV or AIFF sound files.
• Cut, copy, splice or mix sounds together.
• Change the speed or pitch of a recording.

Audacity is free software, developed by a group of volunteers and distributed under the GNU General Public License (GPL).

Audacity can record live audio through a microphone or mixer, or digitize recordings from cassette tapes, vinyl records, or minidiscs. With some sound cards, it can also capture streaming audio. Import sound files, edit them, and combine them with other files or new recordings. Export your recordings in several common file formats and more.

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