How To Convert FLV to MP4 Step By Step Guide [2023]

The FLV file format is one of the fastest-growing video streaming formats on YouTube, Twitch, and other platforms. However, for the FLV video to be compatible with most video players, you need to convert it to MP4.

Despite the huge number of free FLV to MP4 converters, very few of them are reliable. Most of them are costly and difficult for beginners.

In this article, you will learn various aspects of how to convert FLV to MP4.

Before going into the details of how to convert FLV to MP4, do you know what an FLV file is? What about MP4? These files have different functions and are compatible with different players.

What is an FLV file?

A Flash file is a file that uses Flash Air or Adobe Flash Player to store and transmit audio and video over the Internet. Even though FLV files work pretty well with Mac and Windows 10/8/7, the system crawlers don’t recognize them.

The use of an FLV file is severely limited by several factors.

First, they are not supported by Android phones running Android 4.0 and below.

Secondly, the appearance on the market of simple media players compatible with mobile phones and PCs, such as Windows Media Player and KM player.

That’s why you need to convert your favorite YouTube FLV videos on YouTube and other video hosting sites to MP4.

The best FLV players include Winamp, AnvSoft Web FLV Player, VLC Media Player, and MPC-HC.

What is an MP4 file?

MP4 is the short form of MPEG-4 Part 14. MP4 is a file format that can store and transmit both audio and video. MP4 files are compatible with more than ten different media players and can be played on Smart TV, Android/iPhone, and personal computers.

You can also stream MP4 files on the Internet since this format is supported by a large number of video programs and devices.

Part 2: How to Convert FLV to MP4 for Free with Filmora [For Windows/Mac]

1. Wondershare Filmora is the best converter and editor.

If you are a video enthusiast, stop limiting yourself. You can download and convert any video with the Filmora video editor. With this program, you can create videos, edit, convert, and share videos on social networks of your choice.

Why You Should Use Wondershare Filmora

  • Simple and clear interface
  • Hundreds of effects and transitions
  • Thousands of free videos and images
  • Support for almost all video formats
  • Compatible with Mac and Windows

Here is how to convert FLV to MP4:

Step 1: Download and Install Filmora

If you haven’t installed Filmora yet, click below for a quick download and installation. After installation, double-click the program icon on your Windows/Mac desktop to launch. Choose according to your operating room.

Step 2: Start a New Project

Now that Filmora is already open, select the New Project option. Set the frame rate, aspect ratio, and resolution.

Step 3: Upload the FLV video to the timeline.

Download the video you want to convert by clicking the file in the top left corner to import it from media. You can also drag the video to the timeline and crop any areas you don’t need.

Step 4: Choose an output format and convert FLV to MP4

Click on the highlighted Export menu between the preview window and the timeline. A drop-down menu will appear with many file formats for you to choose from. MP4 is very common and therefore tops the list.

Name the video, select the MP4 option, and click Export to start converting your video.

Step 5: Save your video

After conversion, the message Find Target will appear. Click and save your video to MP4.

With just five easy steps, you can convert any file format with the Wondershare Filmora video editor in less than 10 minutes. Try it right now on how to convert FLV to MP4!

Part 3: Alternative FLV to MP4 Converters for Mac/Windows 10/8/7 Computers

Besides Filmora, there are many more FLV to MP4 converters for computers. The only problem is that you will need to dig in your pockets in search of money. Here are some of the converters.

2. FLV converter

This software is designed to convert flash files to any file format of your choice including how to convert FLV to MP4.

Operating systems: Windows 10/Windows 8/Windows 7/Windows XP and Vista


  • Easy and fast conversion
  • Can convert multiple files in one click
  • You can select part of the flash file to convert
  • Email support
  • Audio extraction function

To use, you have two options; download FLV Downloader Plus for $19.99/year or download FLV Converter Plus for $14.99/year. There is a complete guide on how to convert FLV to MP4 with FLV Converter on the main page of the site.

3. Miro Video Converter

If you like Android or Apple devices, you can use Miro Video Converter.

Operating systems: Mac OSX, Kindle Fire, Android, Apple, and Windows Version 3.0


  • Converting audio files
  • Simultaneous multiple conversion
  • Changeable aspect ratio options
  • Easy to use

To download the converter without ads, you need to donate between $5 and $200. Miro Video Converter has a user-friendly interface that allows you to convert and copy videos to any device of your choice.

4. 4Media FLV to MP4 Converter

With the free version of this software, you can only convert FLV videos in less than three minutes.

Operating systems: macOS


  • Extracting sound
  • Built-in media player
  • Many output formats
  • Compatible with multi-core processors and graphics cards
  • Audio CD ripper

Besides converting FLV files to MP4, you can use 4Media FLV to MP4 Converter to convert flash files to MPEG-4, MPEG-4 AVC, MOV and. To convert videos longer than three minutes, you need to subscribe to the $29.99 plan.

5. Any Video Converter Free Ultimate

With this FLV converter, you can upload, convert, burn, and edit any video file.

Operating systems: Windows 10/8/7/ Vista and Mac OS


  • Video editing features
  • Download YouTube videos
  • Screen recording and screenshots
  • 4K UHD video support
  • 30 times faster than other converters

Any Video Converter Free Ultimate is among the most expensive flash file converters. To access all features, you will have to pay $49.95. 

Part 4: Best Free Online FLV to MP4 Video Converter

6. Files-Conversion

Files conversion is the easiest tool any beginner should use to convert FLV files to MP4. All interface details are clear. With this converter, you can convert FLV to AVI, MP4, MPG, MOV, MJPEG GIF, 3GP, and many other formats.

How to convert FLV to MP4 using Files-Conversion

  1. Open the Files-Conversion page on your computer and click Choose File to upload your FLV video
  2. Select the video output in the file format options (MP4)
  • Select the video quality your media player can support without buffering
  1. Change video resolution (Optional)
  2. Click convert that’s all.


Converting flash files with is easy, simple, secure, and 100% free. It is compatible with Windows 10/8/7 and Vista. The biggest advantage of downloading and using this software is that you can use it both online and offline. You can also use to compress your video.

How to convert FLV to MP4 using

  1. Download and install this software on your computer (Optional)
  2. Upload FLV files to the program
  • Select MP4 as the output format
  1. Customize settings for MP4 video
  2. Click “Convert” and wait while the files are being converted

8. Zamzar

Zamzar is an online FLV to MP4 converter compatible with Mac and Windows 10/8/7. In addition, it has an open-source VLC Media Player that will suit all your playback needs. To convert unlimited files up to 2GB at a faster speed, you need to register with Zamzar, it’s free.

How to convert FLV to MP4 using Zamzar

  1. Click Select Link to download FLV files directly from the Internet
  2. Click Convert to and select MP4 as the output format
  • Click Convert to convert

9. FreeFileConvert

It is one of the few universal file converters that can convert audio, fonts, documents, images, and more. FreeFileConvert allows you to download, convert and play various file formats online for free.

How to convert FLV to MP4 using FreeFileConvert

  1. Start by uploading videos from your media, the internet, or cloud storage.
  2. Select MP4 as the target output format
  • Click Convert and that’s it

10. Files

If you want to convert flash files directly from YouTube, use the Convert.Files app. Compared to other FLV converters, this application has the simplest and clearest interface. You can extract audio files and thumbnails and convert them with this application.

How to convert FLV to MP4 using Convert.Files

  1. Click Browse to upload a file to convert or download a file from YouTube
  2. Click the down arrow on the input option to define the file format
  • Choose an output file format
  1. Click convert and wait for the conversion to finish

Choose your preferred FLV to MP4 converter from the list above to enjoy any video from your media or YouTube.


Many file converters on the internet can be used online or offline. Some of them are expensive and others are free. Their usefulness is determined by features. Most professional video editors prefer desktop video converters like Filmora as they can be used offline and everywhere.

All the FLV to MP4 converters listed above are tested and proven to be easy to use, safe, and compatible with Windows 10/8/7 and Mac.

What app or software are you using and why? Was this article helpful to you? Please share your comments on our social networks.

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