Home page of Jan E. Schotsman

Updated July 28th 2017

I specialize in digital video software for Macintosh.
Currently I am offering six pieces of freeware for download:

  1. Deinterlacer
  2. Video Cleaner
  3. Clips Cleaner
  4. Movie Tools
  5. Extensifier
  6. Audio Channel Tool
You can discuss this software in the JES forum.
In order to register you have to answer a simple question. This is a measure to keep the spam bots out.

Contact author: my email address

Donations:      you can make donations to my PayPal account using my email address.
Suggested donation: $5 for Extensifier, Audio Channel Tool or Movie Tools, $15 for Video Cleaner and $25 for Deinterlacer.

Disclaimer:      even though my software is designed and tested carefully I cannot be held responsible for any loss of data or other damage resulting from the use of any of these applications. Use "as is".


All field manipulations (and much more)

JES Deinterlacer v3.8.4 (2.3 MB, click link to download)

Universal binary (Intel and PPC) for Mac OS X 10.5 (Leopard) and higher
New in JES Deinterlacer v3.8


Third version, first posted 10th of May 2006.
Updated 5th of February 2013.
Universal application, requires Mac OS 10.5 (Leopard, Intel or PPC).
G4 and SSE accelerated.

A comparison of JES Deinterlacer slow-motion vs. iMovie slow-motion: slomotests movie (18 MB, by Dave Lute)

plist for debugging startup problems

JES Deinterlacer v3.8.5a5 alpha test at your own risk
New in JES Deinterlacer v3.8.5a5
Deinterlacer PAD file


Fixes various artifacts

JES Video Cleaner v1.4.3 (796 kB, click link to download)

JES Video Cleaner v1.4.4a3 (1.7 MB, works on Lion 10.7.4)


First version, updated May 21st 2012.
Carbon Macho application, G4 and SSE accelerated.
Requires Mac OS X 10.4 (Intel or PPC) or higher.

General Noise Reduction
Remove Logo
NB: noise reduction works well for "wavy" noise, not for point noise or film grain.

Old universal version for Tiger and Leopard: JES Video Cleaner v1.2.4 uni (616 kB)

This version still has the "bottom garbage" feature (aligning lines at the bottom of video digitized from a JVC VCR). No average or reduce noise.

JES Video Cleaner v1.5a0 alpha  test at your own risk


Mask out an area on movies and images

Clips Cleaner v1.3 (1.9 MB, click link to download)

This video tool adds a png banner (with transparency) over the top of all QuickTime movies and jpg image files in the selected folder and saves them to the selected target folder.
The original purpose is to anonymize medical movies.


Assorted operations on movies

JES Movie Tools v1.0 (729 kB, click link to download)


First version, posted 24th of May 2009.
Universal application, requires Mac OS 10.5 (Leopard, Intel or PPC) .
G4 and SSE accelerated, multiprocessing (motion movie).


Edit image description extensions

JES Extensifier v3.0.5 (3.7 MB)

Extensions serve to encode interlace, scale (pixel aspect ratio), clipping and gamma.
This application lets you inspect and set these properties on a file, a group of files or a folder.
For professional use create presets and watch folders.
Can be called from the command line.
Also contains a timecode editor.

Updated 28th of July 2017.


Prepare movie sound for iTunes

JES Audio Channel Tool v1.0 (788 kB, click link to download)

Add sound files to a video-only movie.
Assign channel labels automatically based on file name or track name.
Conform track IDs.
Manually edit sound track names and channel layouts
Universal binary (Intel and PPC) for Mac OS X 10.5 (Leopard) and higher

JES Audio Channel Tool v2.0.2 (3.5 MB, click link to download)

Modern version, written in Swift, for macOS 10.11 (El Capitan) and higher
Updated 30th of July 2017.