H.264 is an excellent codec that will shrink the file size. The parameter that affects file size is data rate. So if the file’s too big after you encode lower the data rate. Conversely, if the file’s under your maximum size you can increase the data rate to get higher quality. If you Google data rate calculator you may find one that will do the calculation for you. And don’t forget that 8 kilobits (8kb) = 1 Kilobyte (1KB).
John
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