Prism Video File Converter Free for Mac is the most comprehensive and stable multiple format video file converter available.

Prism Video Converter Free features an intuitive graphic user interface that makes using the program simple and fun. To add files to be converted simply drag and drop the files on to the work space. Prism is lightning fast and can convert multiple video files within minutes. Prism Free supports all popular video formats. Converts hundreds or thousands of videos all at once!

Prism Video Converter Free for OS X allows you to set encoder/compression rates, resolution, and frame rate for converted files. Prism supports everything from small clips to high definition videos. Use the included video effects to add a personal touch to your videos. You can adjust brightness, contrast, and gamma before converting your video.

Prism Video File Converter Free for Mac OS X will help make converting multiple videos quick and fun!

What's New

Version 2.66

* UI Updates
* Minor Bug Fixes

Ratings and Reviews

4.6 out of 5
64 Ratings
64 Ratings

Steals all file type associations without asking

This app will take over all associations for video file types without asking, and to change them back you’ll have to manually right click each different file type (avi, mp4, flv, etc etc) choose Get Info, select the app it’s supposed to open with like QuickTime or VLC and then click Change All. Whatever undocumented method it uses to do this, even after changing them back, all the files still show the icon from this app as a nice reminder. Apparently there was another review of someone reporting this a year ago, and the company replied that they would fix it a year ago, and they still haven’t. Too bad I didn’t see that review before installing it.

Developer Response

We are working on having a new release soon. There have been some delays due to changes and new requirements made by Apple. We apologize you had this issue and hope that you message our support team:
They would be happy to try to work on resolving your file associations problem you have had.
-NCH Software Team


good stuff

good stuff and it’s free. I had a wmv file and other windows files that I simply needed converted so I could play them in Quicktime on my MAC.
This did just that! It quickly converted my file and I’m able to play it.
I’m not sure about whether or whether not you’re able to edit with this app, as I only use it to convert Windows files for my MAC.

Jed Gel

What a Relief

I had one SWF file (2gb) that I wanted to convert to mpeg. As I will most likely never convert again, I didn’t want to pay for an app. I tried all sorts of free and lite version, but none of them worked, or only converted a couple minutes of the file. Prism converted the whole file and didn’t charge me a penny. Thanks!


NCH Software
6.3 MB
OS X 10.6.6 or later
Age Rating
Rated 4+
© 2016 NCH Software


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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