Normal size fixing thread for CS3.
https://forums.creativecow.net/thread/2/939829#951736
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and for strange sizes in CS4…
Since you are using strange sizes, there is no preset for you. You will have to use CS4’s custom Adobe Media Encoder.
Select Edit > Export Settings.
The Export Settings dialog box appears. This dialog box lets you perform the following actions:
Specify alternate encoding settings to deliver video for different bandwidths and applications.
Crop and resize the video clip to alter its dimensions.