FliFlik LOGO
home Home > Video Tips > 6 Ways to Convert AVI to MP4 [Free & Batch Processing]

6 Ways to Convert AVI to MP4 [Free & Batch Processing]

By Maxwell Clark · Published on October 24, 2025

AVI files are known for being good quality, but they can be big and occasionally won’t work on phones, tablets, or smart TVs. MP4, on the other hand, is small and works with practically anything. Anyone who wants smoother playback, reduced file sizes, or improved interoperability across platforms has to convert AVI to MP4. We will show you six simple ways to convert AVI to MP4 in this post. You can do it for free, in bulk, or online. You don’t need any tech abilities; simply choose the approach that works best for you and get your videos ready to watch, share, or edit without any problems.

Convert Avi to Mp4

Part 1: Why You May Need an AVI to MP4 Converter?

AVI has been around for a long time and is known for keeping video quality high, but by today’s standards, it is not very efficient. AVI files are big, difficult to transfer, and sometimes don’t work with modern devices or apps because the format was designed long before streaming and mobile playback became common. If you try to upload one to your phone or edit it with a simple video editor, you can have lag, sync problems, or even playback faults.

MP4, on the other hand, has become the standard for all videos. It compresses information in a smart way that doesn’t lose quality, which makes it great for streaming online, storing files in the cloud, and sharing files quickly between platforms. It works with advanced codecs like H.264 and H.265, which make sure that the playback is of great quality even at lower sizes. That’s why changing an AVI to MP4 file is more than simply a file change; it’s a technique to make sure your videos will play, edit, and share smoothly anywhere in the future.

Part 2: 3 Free Desktop Tools for Converting AVI to MP4

Desktop converters can save your life if you constantly have to deal with big video files. They are speedier, more stable, and don’t depend on how fast the internet is. Here are three desktop apps that are easy to use and work well for both beginners and experts. They make converting AVI to MP4 quick and easy.

1. UltConv Video Downloader

When it comes to converting AVI to MP4, few tools combine speed, quality, and flexibility as well as FliFlik UltConv Video Downloader. Its clean interface makes it easy for anyone, from beginners to tech-savvy editors, to process multiple files at once, while still maintaining crisp video and audio quality. On top of that, you can convert between 100+ formats, download from over 10,000 websites, and even strip DRM from music platforms like Spotify and Apple Music. In short, it’s not just a converter; it’s a total media freedom tool built for modern creators and everyday users alike.

  • Batch convert AVI to MP4, no waiting around
  • Keep original video quality even after compression
  • Convert video and audio into 100+ formats
  • Download or convert 4K, 2K, and 1080p videos easily
  • Built-in browser to find and download media quickly
  • Remove DRM from music platforms like Spotify or Apple Music

▼ How to Convert AVI to MP4 with UltConv?

To convert videos from AVI to MP4 format with FliFlik UltConv Video Downloader, download the software and install it. Once everything’s ready, follow these simple steps:

FREE DOWNLOAD
secure download Secure Download
FREE DOWNLOAD
secure download Secure Download
  1. Open UltConv Video Downloader on your PC and head to the Converter tab. Click the ‘Convert All to’ button to choose the format you want for your video.

    Open Ultconv Video Downloader Converter Tab
  2. Pick your preferred format (MP4) to get the best playback quality.

    Choose Format in Ultconv Video Downloader
  3. Now in the main window just add your AVI file. You can also drag files here.

    Add Avi File in Ultconv
  4. Now, click on the convert button to start the conversion process.

    Convert Avi Video
  5. Wait for the process to finish, then you will find the converted MP4 file in the ‘Converted’ tab.

    Check Converted Mp4 File in Ultconv
  6. Once the process finishes, all your videos will be stored on your computer in MP4 format, ready to enjoy anytime, even without an internet connection.

    2. HandBrake

    Handbrake

    HandBrake is a free and open-source video converter that works on Windows, macOS, and Linux. It doesn’t cost anything and works with a lot of different file types, such AVI, MP4, and MKV. It may look a little complicated at first, but it’s a good choice for quickly changing AVI files to MP4 files.

    Key Features
    • Free and open-source tool for video conversion.
    • Supports batch conversion and multiple output presets.
    • Allows adjusting video quality, codec, and resolution manually.
    Limitations
    • The interface can feel complicated for beginners.
    • Conversion speed is slower compared to paid tools.

    ▼ How to Convert AVI to MP4 with HandBrake?

    • Step 1: Download and install HandBrake from its official website, then launch the program.
      Extract Music from Dvd Handbrake
    • Step 2: Click on File to bring in your AVI video, or on Folder to add more than one file. Pick MP4 as the output format on the Summary tab.
    • Step 3: (Not Required) If you wish to change the resolution, codec, or frame rate, go to the Video tab.
    • Step 4: To start converting AVI to MP4, click the Start Encode button at the top.
      Start Encoding Avi to Mp4 in Handbrake

    Your new MP4 file will be saved in the destination folder you chose earlier after the conversion is done. You can now play or share it anywhere.

    3. VLC Media Player

    Vlc Media Player

    You may use VLC Media Player to watch videos, but it’s also a useful free converter that can change AVI files to MP4 files without having to download any further software. It’s easy to use, works quickly, and works on Windows, macOS, and Linux. You don’t need any extra software to quickly change formats if you already have VLC.

    Key Features
    • Completely free
    • Converts AVI, MKV, MOV, and other formats to MP4
    • Works smoothly on all major operating systems
    Limitations
    • Limited conversion settings and slower processing speed
    • Output quality may drop slightly in larger file conversions

    ▼ How to Convert AVI to MP4 with VLC Media Player?

    • Step 1: Open VLC Media Player on your computer. Click Media > Convert / Save.
      Open Vlc Media Player Convert Save Option
    • Step 2: Click Add in the pop-up box to bring in your AVI file. After that, click “Convert / Save” at the bottom.
    • Step 3: Choose Video — H.264 + MP3 (MP4) from the Profile drop-down menu as the format for your output.

      Select Mp4 Output Format in Vlc Converter
    • Step 4: Click Browse to choose a folder where you wish to save the converted MP4 file.
    • Step 5: To start the conversion, click Start.

    Your MP4 file will be saved in the folder you choose after a short time. You can play it on any device, including those that don’t accept AVI.

    Part 4: 3 Free Online AVI to MP4 Conversion Tools

    Online converters are the quickest solution to change AVI files to MP4 files in only a few clicks if you don’t want to install any software. They function right in your browser, let you upload files by dragging and dropping them, and are great for small or one-time conversions. Here are three tools that you can trust and should try:

    1. Convertio

    Convert Youtube to Mkv with Convertio

    Convertio is a user-friendly online converter that supports over 300 file formats. It’s fast, convenient, and works directly from your browser no installation needed. Whether you’re converting a short video or an entire movie clip, Convertio gets the job done quickly with adjustable output settings.

    Key Features
    • Converts AVI to MP4 and 300+ other formats
    • Works directly from Google Drive or Dropbox
    • Simple drag-and-drop interface
    Limitations
    • File upload size limited to 100MB for free users
    • Requires a stable internet for larger conversions

    2. CloudConvert

    Cloudconvert

    CloudConvert is a professional-grade online converter that offers full control over output quality and file settings. You can tweak resolution, codec, and bitrate to suit your needs. It’s widely used for quick, high-quality AVI to MP4 conversions.

    Key Features
    • Supports over 200 file types, including AVI and MP4
    • Lets you adjust quality, codec, and resolution
    • Integrates with Google Drive, Dropbox, and OneDrive
    Limitations
    • Free version offers limited conversions per day
    • Large files may take longer to process

    3. FreeConvert

    Freeconvert

    FreeConvert is a simple and fast online tool designed for quick AVI to MP4 conversions. It doesn’t require registration, and its clean interface makes it easy for anyone to use. You can even compress or trim your video before downloading.

    Key Features
    • Easy drag-and-drop interface for instant use
    • Offers optional video compression and trimming
    • Works on all browsers and devices
    Limitations
    • File size limited for free users (up to 1GB)
    • Conversion speed depends on your internet connection

    Final thought

    Converting AVI to MP4 isn’t just about changing file types; it’s about making your videos easier to play, share, and store. Since MP4 works seamlessly across nearly all devices and platforms, switching formats helps you avoid playback issues and save space without losing quality. If you’re looking for a smooth, high-speed conversion tool, FliFlik UltConv Video Downloader is your go-to option. It supports batch processing, multiple formats, and keeps your video quality crystal clear. Give it a try and make your video management simpler than ever!

    FREE DOWNLOAD
    secure download Secure Download
    FREE DOWNLOAD
    secure download Secure Download

    FAQ

    Q1. Is AVI or MP4 better for video quality and sharing?

    Most of the time, MP4 is superior for everyday use. It compresses video well, giving you great quality with smaller file sizes. AVI files may offer better raw quality, but they are harder to share and stream. Most people find that MP4 is the greatest format because it balances quality and compatibility.

    Q2. Does converting AVI to MP4 lose quality?

    If done correctly, converting from AVI to MP4 doesn’t always lower the quality. The result relies on the software and parameters you use to convert. Tools like FliFlik UltConv Video Downloader keep the resolution and sound quality good, so your videos will stay clear and bright once you convert them.

    Q3. How do I play an AVI file?

    You can open AVI files with media players that can handle more than one codec, like VLC Media Player or Windows Media Player. If you have problems playing the video, you can quickly change the AVI file to MP4 format so that it plays better on phones, tablets, and smart TVs.

    Maxwell Clark

    Hey there! I am Maxwell Clark. I'm always looking for new tech tools that make a difference, from making visuals and audio better to making workflows better. I'm going to share tips and tricks for using AI tools for videos, audio, and images. I'm excited to help you navigate the digital world more efficiently and creatively!

    avatar big
    Recent stories by Maxwell Clark: