My movie is not supported by QuickTime. How can I analyze video in Logger Pro 3?

There are several reasons a movie might not display in Logger Pro 3. Before continuing, please refer to:
TIL 2498: Why does the movie player in Logger Pro show a blank panel?

A codec (compression-decompression method) is to code and decode digital movies. This is necessary because movie files are very large, and 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, and m4v. The codec used to create a movie is independent of the media file format.

Logger Pro video is based on QuickTime, which is installed with Logger Pro. QuickTime installs with a large set of codecs (40+), which can open many videos. For details on the codecs supported by QuickTime, see:
TIL 2497: Which media file formats are supported by Logger Pro 3?

You have four options to attempt a workaround:

1) QuickTime plugins

If you close Logger Pro and open the video file directly in QuickTime, you will sometimes get a prompt to download the missing codec.

Another way to find a QuickTime plugin is to find the name of the codec, then search for a QuickTime plugin on the internet:

     To find the codec of a file in QuickTime, go to Window > Show Movie Inspector. Then look for the name of the codec under Format in the Movie Inspector. It is usually the first item listed under format.

     For example, a Google search for "AVC QuickTime plugin" produces several useful results.

2) QuickTime for Mac

The Mac version of QuickTime seems to include more codecs, so you may have better luck opening the file on a Mac.

3) 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.

4) Video conversion

Use a video conversion program to encode your movie with a different codec. There are many free and paid options for software to do this. The free version that seems to work well with most formats is VLC, which is free from:
http://www.videolan.org/vlc/

See also:
TIL 1394: How do I convert a Windows Media Format (.wmv) file for use in Logger Pro 3?
TIL 2176: How do I transfer a Logger Pro file containing a movie or image to another computer?