If you have macOS 10.15 or newer you must use Logger Pro 3.16 or newer to use video features.

For Logger Pro only, note that you cannot insert a video by using the Open command from the File menu. This will generate an error message about incompatible file types. Instead, you must use the Movie command from the Insert menu to insert a video.

Vernier Video Analysis updates when you reload the page in your browser.

The remaining discussion applies both to Logger Pro and Vernier Video Analysis.

A movie will not display in your app if it cannot read either the codec or the file type. Instead, you will see a black or gray box, or you will not be able to choose the movie file to insert.

The quick answer is that you need to convert the movie to a codec and/or file format that the app can read. We recommend .mp4 as a readable file type.

Here is a deeper explanation followed by several file conversion options:

Digital video files have both a codec and a file format.

A codec (compression-decompression method) is a way to code and decode digital movies. This is necessary because movie files are very large; codecs make the file size manageable.

A codec should not be confused with the media file format, which is the package type indicated by file extension, for example: .avi, .mov, .mp4, and m4v.

Logger Pro video on Windows, as of version 3.12, is based on Windows Media Foundation. Windows Media Foundation opens a wide variety of files, but not all formats and codecs.

Logger Pro video on macOS uses the macOS AV Foundation toolset. Like the Windows equivalent, it opens a wide variety of files, but not all formats and codecs.

Vernier Video Analysis uses the browser to open video files.

Note that while many video files can be opened on both macOS and Windows, there will be some that open on only one platform or the other, or on neither.

You have several options if a video won’t open in your app:

1) Video conversion

Use a video conversion program to encode your movie with a different codec or file format. There are many free and paid software applications that can do this. The best option for conversion is to use a .mp4 file format. Most codecs that use mp4 format can be opened in our apps.

Here are some options for converting files that won’t open on your platform:

This is a free online tool for light use. We have had no issues with it, but the site is advertising supported.

Handbrake is a free conversion utility, but may be intimidating to new users. Use the default “normal” preset, which creates an .mp4 file with the H264 codec.

There are several other free and paid video compression and conversion applications.

2) Camera software export

Open the video in the application you used to create the video (often a webcam or movie maker application that came with the camera), and look for any video export options to save the video in a different format. Often this will force the application to use a different codec, which Logger Pro will then be able to open.

How do I transfer a Logger Pro file containing a movie or image to another computer?
Why does the movie player in Logger Pro show a blank panel?
Logger Pro displays video as solid green
Why does a video captured on an iOS device give a codec error or render as a gray or black box in Logger Pro or Vernier Video Analysis?