There are several ways to bulk rename files in Windows, such as using built-in tools or third-party software. Below is a guide for bulk-renaming files, specifically removing repeated extensions like .mp4.mp4.

Option 1: Using Command Prompt (Fast and Functional)

  1. Open Command Prompt:

    • Press Win + R, type cmd, and press Enter.

  2. Navigate to the folder where the files are located:

    • Type the following command and press Enter:
      cd\path\to\your\folder
      Replace path\to\your\folder with the actual path to your folder (e.g., C:\Users\YourName\Videos).

  3. Run the renaming command:

    • Enter the following command:
      ren *.mp4.mp4 *.mp4
    • This command tells Windows to rename all files ending in .mp4.mp4 to just .mp4.

  4. Confirm the changes:

    • Check in the folder to ensure the filenames have been modified.

Option 2: Using PowerShell (Flexible and Powerful)

  1. Open PowerShell:

    • Press Win + R, type powershell, and press Enter.

  2. Navigate to the folder:

    • Run the command:
      cd "path\to\your\folder"
      Make sure to use double quotes if the path contains spaces.

  3. Rename the files:

    • Run this command:
      Get-ChildItem *.mp4.mp4 | Rename-Item -NewName {$_.Name -replace ".mp4.mp4",".mp4"}
    • This will find all files ending in .mp4.mp4 and replace it with .mp4.

Option 3: Using Bulk Renaming Tools

For more advanced control or a GUI experience, you can use third-party software such as:

  1. Bulk Rename Utility:

    • Download from Bulk Rename Utility.
    • Install and open the tool.
    • Navigate to your folder with the videos.
    • Use the search-and-replace function to remove .mp4.mp4 from all filenames.

  2. Advanced Renamer:

    • Download from Advanced Renamer.
    • Import your files into the tool.
    • Use the pattern/remove feature to bulk edit filenames.

Option 4: Manually in File Explorer (Simple, but Time-Consuming)

  1. Open the folder containing the files.
  2. Select all files (Ctrl + A).
  3. Right-click any selected file and choose Rename.
  4. Manually remove .mp4.mp4 from each filename.

The Command Prompt or PowerShell methods are generally the quickest for this specific task. Let me know if you need help with any of the steps!