How to convert .264 videos to .h264 format.
Converting Ripped Video Data Files directly to H.264 Encoded Video Files (.264 to .h264 conversion) is certainly possible and should be quite straightforward.
Try using one of several video editing programs or (online) conversion tools, such as the Freemake Video Converter or Adapter, which allow users to import 264 videos and export them in H.264 format.
A free video converter offering high-quality conversions between many video formats