Скачать или смотреть How to Merge MP3 and MP4 in Python: Mute MP4 and Add MP3 Soundtrack

Learn how to efficiently merge an `MP3` audio file with an `MP4` video file in Python using `moviepy`, while muting the original video's audio.
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How to Merge MP3 and MP4 in Python: Mute MP4 and Add MP3 Soundtrack

Are you looking to enhance your videos by merging an MP3 audio file with an MP4 video? Maybe you want to replace the existing audio of an MP4 video with a catchy MP3 soundtrack? If so, you are in the right place! In this guide, I'll guide you through the process of removing the original sound from an MP4 video and adding a new MP3 audio track using Python's moviepy library.

Why Use MoviePy?

moviepy is a great library for video editing in Python. It allows you to manipulate video files easily and supports various formats. In this guide, we’ll leverage moviepy to achieve our goal of merging audio and video.

The Problem

You may have an MP4 video file that contains unwanted audio, and you want to replace it with a fresh MP3 soundtrack. This process involves two main tasks:

Muting the original MP4 file - Removing the existing audio track.

Adding the new MP3 file - Overlaying the MP3 soundtrack onto the video.

Solution: Using MoviePy to Combine Audio and Video

Here’s a step-by-step approach to merging MP3 and MP4 files effectively:

Step 1: Install MoviePy

If you haven't already installed the moviepy library, you can do so using pip. Open your terminal or command prompt and run the following command:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Import Required Libraries

In your Python script, you’ll need to import the necessary functions from the moviepy library. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Create the Combine Function

Now, let’s create a function to handle the merging of audio and video. Here’s a sample code snippet:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Usage of the Function

Now that we have our function, we can easily use it to modify our files. Here’s how you can call the function:

[[See Video to Reveal this Text or Code Snippet]]

The first call creates a new output file called test_over.mp4 with the new audio track.

The second call overwrites the existing test.mp4 file, muting it and adding the new audio track.

Notes on FPS

The fps parameter stands for frames per second and is typically set to 60 for smooth video playback. You can adjust this as necessary based on your video's original frame rate.

Conclusion

With just a few simple lines of code, you can easily replace an MP4 video’s audio with your favorite MP3 soundtrack. The moviepy library makes the process straightforward and effective for anyone looking to edit their videos in Python.

Key Takeaways:

Install moviepy to handle video editing in Python.

Use the set_audio method to replace the audio track.

Save your final product using write_videofile with your desired output options.

Happy coding and editing! If you have any questions or run into issues, feel free to leave a comment below.