There are many reasons why the repaired file plays faster or slower than normal. Mainly, while repairing your corrupt file you choose a healthy file as a reference to repair the corrupted file.
Remo Repair MOV software repairs the corrupted MOV file with reference to the healthy file selected. If the healthy file and corrupt files were recorded using same camera and settings such as, frame rates, pixel rate etc. then the repaired file will play as normal. We recommend selecting a healthy reference file which is recorded using same settings as the corrupt MOV file.