But these methods are not stable and usually crash. Of course, the online MP3 to MP4 converters are convenient methods. The article shares the best methods to convert MP3 to MP4. It does not have any custom options to enhance the videos. Limited to handle 150MB per conversion of MP4 files for free at a time. Send output MP4 files to your email address when conversion is done. Support extensive multimedia formats to the desired MP4 video files. Upload MP3 files from hard drive or a URL for a batch conversion easily. It will remain the desired audio quality if the original MP3 files are in good condition. It can process up to 5 MP3 files at the same time. Zamzar is another way to convert MP3 to MP4 online for free. Lacks audio editing tools to enhance the audio, trim the file and more. Take a period of time to convert MP3, even in a stable environment. Provide extensive custom options to tweak the output MP4 files easily. Convert multiple MP3 files within a batch process without any charge. Upload MP3 files from your computer, a URL and even Google Drive. It has been around for years and more stable than other web apps for converting the audio files. Online Convert is a collection of file converters online. Here are 2 recommended methods you can take into consideration. Of course, you can also take advantage of online MP3 to MP4 converters to transcode the audio files within clicks. Part 3: 2 Best Methods to MP3 to MP4 Converters Online Go to the Video tab, you can select MP4 and choose a proper resolution to export the images and MP3 audio as MP4 according to your requirement. Step 3: Just preview the desired video files, you can click the Export button at the bottom right side to open the export dialog. Optionally, click the Edit Audio to open the audio editor and modify the MP3 file. After that, you can click the Add Background Music at the bottom and add the MP3 file that you want to convert to MP4.

Step 2: Adjust the order of the images, and add transitions between them. You can combine them into an MP4 movie according to your requirement. Step 1: When you download and install the MP3 to MP4 converter, you can launch the program and click the Add photo(s) and video(s) here option to add the photos and MP3 files. How to Add MP3 to a MP4 Movie as Background In order to combine the MP3 music to the movie, AnyMP4 Video Editor is a desired MP3 to MP4 converter to make your videos standout with filters, transitions, themes and more other elements within clicks. When you have some favorite movie, or even a photo, you can also add the MP3 file as a background of the MP4 movie.

Part 2: How to Add MP3 to MP4 as Background

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