There are many ways to determine the width and height of a video. We recommend using the open source program MediaInfo.
- Download and install the GUI version of MediaInfo with installer. Download MediaInfo here.
- Open MediaInfo.
- In Windows, click on the button labeled "...". In OS X, click on the icon with a magnifying glass over top of a musical note, or in the program menu, select File -> Open -> Open File(s).
- Navigate to the location of the file, select it and click Open.
- In the section "First Video Stream", you will see something similar to "English, 314 Kbps, 320*240 (4:3), at 30.000 FPS, WMV1". The third item in is the one we're interested in: 320 = height; 240 = width.