Many multimedia software converters available on the market can help you with 264 to mov conversion, i.e. converting of MPEG-4 AVC video (.264) to Apple QuickTime movies (.mov). H.264 codec can use more extensions then just 264, so maybe also check the alternatives like h264 to mov converters.
Open 264 file Open MOV fileA video converting tool for macOS / OS X
One of the many multimedia converter programs for Windows
Easy to use video converter for Mac