AviSynth

2.6.0 Video manipulation tool for Windows

Tina de Pierre

Powerful scripting language for video processing, enabling advanced editing and effects customization.

Free and open source video editing software download, reviewed by Tina de Pierre
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Video editing tool designed for post production.

AviSynth is an advanced, script-based set of tools which help users with the post production of video files.

The application does not come with a graphical user interface, so it isn't exactly suitable for novice users but it does provide a very rich set of tools and examples for polishing up video files.

Creating and editing scripts can be done using a basic text editor and once completed, save them as AVS files. Several mainstream video and media players can open these files.

Even though the program may seem difficult to use, it is very powerful and can create some excellent custom effects which may be applied to videos. Furthermore, AviSynth supports a wide variety of video formats.

In conclusion: AviSynth is a very powerful set of tools which are suitable for intermediate users. The included examples are a great way to get started creating custom effects and filters and finding tutorials and other examples online is also an option.

Features of AviSynth

  • Audio Processing: Audio synchronization and processing support.
  • Color Correction: Precise color manipulation and correction.
  • Deinterlacing: Improve video quality with deinterlacing.
  • Format Conversion: Easily convert between different formats.
  • Frame Interpolation: Manipulate video frames with interpolation.
  • Hardware Acceleration: Automatically use GPU or hardware acceleration.
  • Image Processing: Comprehensive set of filters and effects.
  • Multi-Threading: Improve performance with multi-threading.
  • Real-Time Processing: Instant processing of video and audio.
  • Scripting: Simple scripting language to automate tasks.
  • Video Decimation: Reduce video size with decimation.
  • Video Decoding: High-performance video decoding support.
  • Video Editing: Powerful frame-level video editor.
  • Video Encoding: Optimized encoding of videos for streaming.
  • VirtualDub Support: Directly use VirtualDub filters within AviSynth.

Compatibility and License

AviSynth has been released under the open source GPL license on Windows from audio and video editors. The license provides the options to freely download, install, run and share this program without any restrictions. The source code for AviSynth should be freely available and modifications are certainly permitted as well as the option to inspect the software.

What version of Windows can AviSynth run on?

AviSynth can be used on a computer running Windows 11 or Windows 10. Previous versions of the OS shouldn't be a problem with Windows 8 and Windows 7 having been tested. It runs on both 32-bit and 64-bit systems with no dedicated 64-bit download provided.


Filed under:
  1. AviSynth Download
  2. Free Audio and Video Editors
  3. Open source and GPL software
  4. Video Editing Software
AviSynth has been picked by our editors as good software.
We have tested AviSynth 2.6.0 against malware with several different programs. Please review the test results. We have not certified this program as clean. [Read more]