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Free WebM to AVI Converter

Release date:
Chinese (simplified), Czech, English, Finnish, French, German, Greek, Hungarian, Italian, Latvian, Japanese, Polish, Portuguese (BR), Russian, Serbian, Spanish, Turkish
Windows XP, Vista, 7, 8, 10



Free WebM to AVI Converter is the freeware application which converts YouTube videos (WebM, MP4, FLV, 3GP) into AVI or MPG (MPEG-1, MPEG-2).

WebM is an open media file format designed for publishing videos on websites compatible with HTML 5 specification. WebM files are commonly used by many websites, including YouTube, Wikipedia. Unfortunately, many players and video editing programs does not support WebM. In this case, it is necessary to convert WebM files to more popular format, such as AVI or MPG.

The application allows you to set many parameters used by encoder: audio and video codec, audio and video bitrate, fps, sampling frequency, resolution and other.

The Free WebM to AVI Converter interface is a very simple and user-friendly. To convert video files, just drag & drop them into main window and click button on the toolbar.

The program is available in both 32 bit and 64 bit version. The conversion process of the 64-bit version is faster by a few to 25% (depending on the selected video encoder).


The most important features

  • Converting videos from WebM, MP4, FLV, 3GP to AVI or MPG.
  • Limited support for other video formats (including AVI, MKVWMVMTS, OGM, AMV, MOV).
  • Decoding audio and video codecs used in WebM files: VP8, Vorbis.
  • Supported video codecs: H.264 AVCXvid, DivX 3 Low-Motion, WMV, FFmpeg ISO MPEG-4, MS MPEG-4 ver. 2, Motion JPEG (MJPEG), HuffYUV (lossless).
  • Supported audio codecs: MP3 (Lame), MP2, AC3AAC, WMA, PCM 16-bit.
  • Support for multithreaded encoding using the H.264 (x264) encoder.
  • The ability to convert any audio stream from a video file with multiple audio tracks.
  • Generating video files compatible with the MPEG-1 (VCD) and MPEG-2 (SVCD, DVD) standard.
  • Predefined conversion profiles. Possibility to save your own settings to an INI file.
  • A large number of encoding parameters: audio and video bitrate, fps, number of channels and audio sampling, the volume, change the resolution, scaling and cropping the image, and others.
  • Possibility of 2-pass encoding, which will increase the image quality and reduces the volume of output file.
  • The ability to save the FFmpeg encoder commands in a BAT file.
  • The program has a built-in support for multiple languages. Current version supports Chinese (simplified), Czech, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Latvian, Polish, Portuguese (BR) Russian, Serbian, Spanish, Swedish, Turkish.
  • The program is portable: it does not use system registry and all settings are stored in INI files. Thanks to this program can be run from portable devices such as pendrives, removable drives.
  • 100% freeware! – for private and commercial use. The program does not require registration, there is no built-in limitations and spyware applications, does not add to the generated files “watermarks”, etc.

How to uninstall?

If you no longer use Free WebM to AVI Converter application or if you want to free up space on your hard disk, you can uninstall this program from your computer. To do this, follow these steps:
  1. Open Programs and Features by clicking the button, clicking Control Panel, clicking Programs, and then clicking Programs and Features.
  2. On the list of installed programs select Free WebM to AVI Converter and then click Uninstall. This will launch the uninstall wizard.
  3. Follow the instructions displayed on the screen.

End User License Agreement

This program is completely free. You can use it without any restrictions, also for commercial purposes.

3rd party software

To encode the video files the program uses the FFmpeg encoder (

To retrieve information about video files, the program uses the library MediaInfo.dll (

The program is accompanied by a special version of the FFmpeg encoder, adapted to the needs of the program. Not recommended to use other versions of FFmpeg.


Version 1.5 (2018.07.06)

  • Program name was changed from Pazera Free WebM to AVI Converter to Free WebM to AVI Converter.
  • New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
  • New modules: Check for updates and Tools info.
  • Added option to save the creation, last access and last write time of the source files in the output files.
  • New video filters: color conversion to grayscale or sepia, brightness, saturation, flip horizontal, flip vertical, rotation, negative.
  • Displaying the size of the resulting file during conversion.
  • Highlighting the conversion speed and highlighting the number of the current pass during two-pass conversion.
  • A new control displaying a list of pre-defined video resolutions. All resolutions that meet the 16:9 aspect ratio are highlighted in green, 4:3 – light red. The list has also been complemented with slightly less used resolutions.
  • The control displaying the list of profiles has been changed. Now additional separators are displayed between the profiles, which increases the readability.
  • Changed the position and size of some interface elements, mainly related to facilitating access to advanced program options.
  • A small changes to many controls: file list (table), buttons, audio volume slider, menus, some panels…
  • Added the ability to select visible columns from the context menu of the file list and from the main menu.
  • The error causing displaying of negative values of processed data after exceeding the 2GB threshold has been fixed.
  • Automatic scrolling of text in the window with the conversion progress.
  • Lots of smaller improvements and bug fixes.

Version 1.4 (2016.11.19)

  • From now the program is also available in a 64-bit version.
  • New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
  • The default video encoder was changed from H.264 to Xvid, which is more “native” to AVI files.
  • Improved compatibility with Windows XP.
  • New action: Uncheck selected files.
  • Added support for Swedish language.
  • Minor bug fixes and enhancements.

Version 1.3 (2016.06.28)

  • New conversion engine (FFmpeg) and multimedia information library (MediaInfo).
  • Improved matching of encoding parameters with automatic settings.
  • New file list control with many additional features (sorting, row and column moving…).
  • New columns: Duration, Audio (summary), Audio codec, Audio codec ID, Audio profile, Audio bitrate, Channels, Sampling, Audio stream size, Video (summary), Video codec, Video codec ID, Video profile, Video bitrate, Width, Height, Resolution, Display aspect, Frames/sec., Scan type, Bits/pixel, Video stream size.
  • Better support for WebM, MP4, FLV and 3GP video files.
  • Changed toolbar.
  • New icons.
  • Added support for additional languages: Chinese (simplified), Finnish, Hungarian, Russian.

Version 1.2 (2014.05.19)

  • Small changes in the program interface.
  • New version of the FFmpeg and MediaInfo library.
  • Fixed saving audio codec ID when converting audio to AC3 and AAC.
  • Improved detection of data streams in video files.
  • Closing the window with the conversion progress at the end of the conversion process.
  • Improved reading and writing of encoder parameters from/to profiles.
  • Added support for additional languages: Greek, Latvian, Portuguese, Serbian, Turkish.
  • New conversion profiles.

Version 1.1 (2013.06.11)

  • New version of the FFmpeg that supports the latest versions of the x264, XviD and other encoders.
  • New version of the MediaInfo library.
  • Changed the application toolbar.
  • Adding to the processing list of all supported files from the selected folder and its subfolders.
  • Removed automatically adding a program icon to the system tray after startup. This icon is added only after selecting the Minimize to system tray command.
  • Improved matching of encoding parameters with automatic settings.

Version 1.0 (2013.03.22)
Initial release.

Previous versions

Free WebM to AVI Converter 1.5 32-bit
Release date: 2018.07.06
File size: 13.1 MB
SHA-256 checksum: 038b5c8073052f46103de409c46125a919c25d434b9729b4c7730c02b36dc7db
Free WebM to AVI Converter 1.5 64-bit
Release date: 2018.07.06
File size: 14.3 MB
SHA-256 checksum: 2c86d8ab7793d7d33c62a94f1614d476d74a9495b85cd978a1787908b594583f
Pazera Free WebM to AVI Converter 1.4 32-bit
Release date: 2016.11.19
File size: 10.4 MB
SHA-256 checksum: 3241d24540a0c38d294d4f8c0180771b26f85eee880d01375cc5b8a21372186d
Pazera Free WebM to AVI Converter 1.4 64-bit
Release date: 2016.11.19
File size: 11.7 MB
SHA-256 checksum: ba14d4cd4585e2ab1e2a5e9f2da7b9f55dd46f487fe4b25cdee0d442d4346ee8
Pazera Free WebM to AVI Converter 1.3 32-bit
Release date: 2016.06.28
File size: 10.1 MB
SHA-256 checksum: bc4da02ee7ef787ed63f2bc5994a11f4815a702ada812be9fc09dc6a1367e105
Pazera WebM to AVI Converter 1.2 32-bit
Release date: 2014.05.19
File size: 7.2 MB
SHA-256 checksum: 59ad6b4827358ec80672d920f4877762bb12c14d0a28355f8df29dd07b233a31
Pazera WebM to AVI Converter 1.1 32-bit
Release date: 2013.06.11
File size: 10.0 MB
SHA-256 checksum: 6fb28dd7b4ab1f4cda32ed697c066cd079cb37a2a0f7ea5968dcfb9ebead891f
Pazera WebM to AVI Converter 1.0 32-bit
Release date: 2013.03.22
File size: 8.6 MB
SHA-256 checksum: eca003d3ebf356e7d46670f5f4b242187209ea09b25aabcac6f0faaa2d7025bd