To concatenate two MP4 files using FFmpeg, you can follow these steps:

Open your command prompt or terminal.

Navigate to the directory where your MP4 files are located using the "cd" command.

Run the following command to concatenate the files:
ffmpeg -i "concat:file1.mp4|file2.mp4" -c copy output.mp4
Replace "file1.mp4" and "file2.mp4" with the names of the MP4 files you want to concatenate, in the order you want them to appear in the final output.

Replace "output.mp4" with the name you want to give to the final output file.

Press Enter to execute the command.

Wait for FFmpeg to concatenate the files. Once the process is complete, you should see a message in your command prompt or terminal confirming that the files have been concatenated.

Your concatenated MP4 file should now be ready in the directory you specified.
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