The HandBrake Team - 9.9MB - Бесплатно (Freeware)
HandBrake is a tool for converting video from nearly any format to a selection of modern, widely supported codecs.

Reasons you’ll love HandBrake:

  • Convert video from nearly any format
  • Free and Open Source
  • Multi-Platform (Windows, Mac and Linux)

WonderFox Soft, Inc. - 45.1MB - Бесплатно (Freeware)
Free HD Video Converter Factory is powerful High Definition Video Converter and it builds in 150 video format, it can easily support Multi-track HD video M2TS, MKV, AVCHD, HDTV BDAV and MPEG-TS video movies. It also supports converting all the High Definition and HD-Camcorder videos, to both portable and console players, such as iPad, iPod, iPhone, Apple TV, PS3, PSP, Xbox, Zune, PDA, Blackberry, Nokia, Android, Zen, etc,.

WonderFox Soft, Inc. - 54.2MB - Бесплатно (Freeware)
There are currently many HD video converters in this field, which claim to be the best HD videos converter. But if you got the idea of HD conversion for a long time, you must know WonderFox HD Video Converter Factory Pro is a program of the first batch supporting HD video conversion. 

HD Video Converter Factory Pro is designed to take advantage of your computer hardware. It supports Multi-CPU and Hyper Threading, increasing CPU utilization on video conversion processing with mature technology.

With only a few clicks, you can easily download HD video files (download 4K video, new VR video, 360 degree video, HD MP4, HD MKV, HD AVI, HD TS, HD ASF, HD MOV, HD WMV) and then transfer them to any of your portable devices.

The HandBrake Team - 9.6MB - Бесплатно (Freeware)
HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded video transcoder, available for MacOS X, Linux and Windows.

Key Features:
  • Chapter selection, Chapter Markers
  • Basic subtitle support
  • Constant Quality or Average Bitrate Video Encoding
  • Support for VFR, CFR and VFR
  • Video and Filters: Deinterlacing, Decomb, Detelecine, Deblock, Grayscale Cropping and scaling
  • Live Video Preivew
  • Built-in presets for common devices
Supported Sources:
  • Most common multimedia files that libavformat and libavcodec support.
  • Any DVD or Bluray-like source which is NOT copy-protected. (removal of copy protection is not supported)
Outputs:
  • File format: MP4(M4V) and MKV
  • Video: H.264(x264), MPEG-4(ffmpeg), MPEG-2(ffmpeg), or Theora(libtheora)
  • Audio: AAC, CoreAudio AAC/HE-AAC (OS X Only), MP3, Flac, AC3, or Vorbis. AC-3, DTS, DTS-HD, AAC and MP3 pass-thru

Audacity Development Team - 25.8MB - Бесплатно (Freeware)

Аудиоредактор Audacity, распространяющийся бесплатно, является очень мощным и функциональным инструментом для правки звуковых файлов. Программа является кроссплатформенным решением и одинаково уверенно "чувствует себя" в Windows, Linux и Mac.