Converting .avc videos to .mpe format.
Converting MPEG-4 Advanced Video Coding Movie Format directly to MPEG Movie Files (.avc to .mpe conversion) is certainly possible and should be quite straightforward, even though your options are limited.
Your only option appears to be using the ImTOO DPG Converter, which allows users to import AVC videos and export them in MPE format.
A video to DPG convertor