FFmpeg - How to replace the image of a video with a png without modifying the audio?

FFmpeg is a powerful command-line tool that allows you to manipulate and convert audio and video files. One common task you may encounter is replacing the image of a video with a PNG file, without modifying the audio. In this article, we will guide you through the process of achieving this using FFmpeg.

Before we begin, make sure you have FFmpeg installed on your computer. If you don't have it, you can download it from the official FFmpeg website and follow the instructions to install it.

Once you have FFmpeg installed, open your command prompt or terminal and navigate to the directory where your video file is located.

To replace the image of a video with a PNG file, you can use the following FFmpeg command:

Let's break down this command:

• -i input.mp4: This specifies the input video file. Replace input.mp4 with the name of your video file.
• -i image.png: This specifies the input PNG file. Replace image.png with the name of your PNG file.
• -map 0 and -map 1: This tells FFmpeg to include all streams from the first input (the video file) and the second input (the PNG file) in the output file.
• -c copy: This instructs FFmpeg to copy the audio and video streams without re-encoding them, which ensures the audio remains unchanged.
• -shortest: This option makes the output video duration match the shortest input stream duration, which is usually the video file in this case.
• output.mp4: This specifies the output video file. Replace output.mp4 with the desired name for your output file.

Once you have entered the command, hit Enter and FFmpeg will start processing your video. The time it takes will depend on the size and duration of your video.

After the process is complete, you will find the output video file in the same directory as the original video file. The new video will have the same audio as the original, but with the image replaced by the PNG file you provided.

That's it! You have successfully replaced the image of a video with a PNG file using FFmpeg without modifying the audio. You can now use this technique to customize your videos or add overlays.

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