4 Best Free FLV to MP4 Converters for Windows (with Tutorial)

Author: Vita
Publish date
Updated on Mar 8, 2024
Convert FLV to MP4 Free
  • Get Get the best free FLV to MP4 converter for Windows
  • 1. Convert FLV to MP4 and other 300+ formats & devices;
  • 2. Trim, crop, rotate, merge, add text, change video/audio settings, etc.
  • 3. Download videos and music from 1000+ websites;
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Top 4 Free FLV to MP4 Converters
1. Free HD Video Converter Factory
2. HandBrake
3. FFmpeg
4. cloudconvert.com

FLV (Flash video) is a format used to play videos and animations online. It has been the standard video format on YouTube and many other streaming sites for a long time. Though HTML5 has replaced FLV gradually, some people still like to transmit videos in FLV format. However, the fact is that only a few video players and editors are able to support this format with proper codecs installed. In order to play FLV on devices smoothly, you should first solve the incompatibility issue. The best solution is converting FLV to a universal video format like MP4, which is accepted by most devices and applications.

And to complete the conversion task, a good FLV video converter is necessary. Then you may wonder which converting tool you can rely on. Don’t worry. The following introduces the 4 best free FLV to MP4 converters and explains how to do the conversion in detail. Read on.

1. Free HD Video Converter Factory

As a professional video/audio converter, WonderFox Free HD Video Converter Factory can import all mainstream video formats and convert them to over 300 output formats, and presets for devices & platforms. For example, you can free convert FLV to MP4, MKV, WMV, WebM, HTML 5, etc. Besides converting video file format, this software offers handy editing features to trim, crop, rotate, flip, add subtitles, watermarks, effects, and more.

FLV to MP4 converter free downloadfree download here and follow the simple guide below.

Free HD Video Converter Factory
FLV to MP4 Converter Free

Free HD Video Converter Factory is the best free video converter for Windows. It supports all common and some rare video and audio formats and converts them with no file size, duration, or time limit. Free, simple, yet efficient. Try it now!

Free download Download for Free
Free download Download for Free

Step 1. Import FLV File

Launch Free HD Video Converter Factory, and you’ll see two modules on the home interface. Choose Converter. Then click Add Files to import your FLV video or directly drag the target file into the software.

Add FLV File
Add FLV File

Step 2. Choose MP4

Click the format image on the right side of the interface, go to Video, and select MP4 as the output format.

Optional step: You can use the editing tools under the imported video to trim, rotate, crop, or add special effects to your video. Moreover, you can change the video bitrate, resolution, frame rate, volume, etc. in the "Parameter settings" section.

Step 3. Start Conversion

Tap the inverted triangle button at the bottom to set an output folder. Then press Run to start the conversion. Once the process is completed, a window will pop up and prompt you to check the converted file.

Convert FLV to MP4
Convert FLV to MP4

Tips. If you need to convert dozens of FLV files, the Pro version of Free HD Video Converter Factory is a better choice, which enables you to convert (and compress) files in batch mode & with hardware acceleration. Upgrade now:

WonderFox HD Video Converter Factory Pro
HD Video Converter Factory Pro

It’s the best batch video converter that enables you to convert multiple FLV files to MP4 and 500+ profiles at a lightning-fast speed. Editing, screen recording, video downloading, and GIF making are also supported. Try it now!

Free download Download for Free
Free download Download for Free

2. FLV to MP4 Converter Free – HandBrake

HandBrake is a popular converting tool for Windows and other operating systems. It can help you convert from nearly any format to a selection of common formats and codecs, including FLV to MP4. This open-source tool also allows you to add subtitles, modify presets, trim/cut/crop videos, and even rip DVDs.

Get HandBrake from the official website→

How to convert FLV to MP4 free with HandBrake?

Step 1: Run HandBrake after you install it on your PC.

Step 2: On the "Source Select" page, click "File" to load your FLV file. You can also drag and drop it into the program directly.

Step 3: Under the "Summary" tab, choose "MP4" from the "Format" drop-down list.

Step 4: Move to "Dimensions" where you can resize the video. Then go to the "Video" tab to select a video codec, adjust the video quality, and change other settings as you need.

Step 5: Click the "Browse" button to rename the file and specify an output path.

Step 6: Press "Start Encode" on the top menu bar to start the FLV to MP4 conversion.

HandBrake Convert FLV to MP4
HandBrake Convert FLV to MP4

3. FLV Converter to MP4 Free – FFmpeg

FFmpeg is a free and cross-platform multimedia framework designed to process video and audio files. It’s capable of playing, recording, converting, streaming videos and audio, as well as ripping DVD to digital formats. But since FFmpeg is based on the command line, it won’t be easy to use for beginners. If you want to try this conversion method, do the following:

In the DOS window, enter the folder where storing the .flv files. For example, the path of my FLV files is "D:\flvFolder", how to convert FLV to MP4 free using FFmpeg?

Step 1: Press Win + R and input cmd to enter the DOS window. Input d: to enter the D disk.

Step 2: Type in cd flvFolder. (Now, you are in the FLV folder.)

Step 3: Input FFmpeg command line: for /R %f IN (*.flv) Do ffmpeg -i "%f" –c copy "%~nf.mp4". Then, you will get the converted .mp4 files.

In this free FLV to MP4 converter, you can also input proper command lines to change the video parameters as you desired. (Not recommended to inexperienced users.)

Get FFmpeg from the official website→

FFmpeg FLV to MP4
FFmpeg FLV to MP4

4. FLV to MP4 Converter Free Online

An FLV converter to MP4 free online offers a convenient way to do the video conversion. And you can find a lot of online converters that directly work from your browser. The operation is quite easy (usually 3 steps). But those web-based tools always have restrictions on file size, amount, format, resolution, etc. For instance, Zamzar only imports a single file smaller than 50MB, Freefileconvert allows a combined size of 300MB, and Cloudconvert supports multiple files with a max of 1GB. What's more, during the operation, you should make your internet in a stable condition. If it fails, retry to finish the conversion.

Now, I take cloudconvert.com as an example to show you how to convert FLV to MP4 free online.

Step 1: Visit the site: https://cloudconvert.com/flv-to-mp4

Step 2: Click "Select File" to add your FLV files.

Optional. Press the wrench icon to change the resolution, video codec, trim, add watermark, etc. Then, click "Okay" to save your settings.

Step 3: Click the "Convert" button to start uploading and converting your FLV files.

Step 4: When the process is over, download and save the converted MP4 files to your local folder.

FLV to MP4 Converter Free Online
FLV to MP4 Converter Free Online

In Summary

That’s all about the 4 best free FLV to MP4 converters for Windows. With brief introductions and detailed conversion steps of each converting tool, I believe that you can convert your FLV files to MP4 for handy playback and editing on various devices. In general, WonderFox Free HD Video Converter Factory is the overall easiest and most efficient solution for such conversion tasks because it has fewer limits while offering higher output quality and more additional features.

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HD Video Converter Factory Pro
MOV/WebM/FLV to MP4 Converter No Limit
  • Bulk convert FLV and other videos to MP4 format;
  • Batch compress large videos with high quality preserved;
  • Download movies, music, and other video/audio files online;
  • Support 720P, 1080P, 4K, 8K, and videos of other resolutions;
  • Record screen with mic and system sound (no lag/watermark);
  • Make GIFs from FLV/MP4/MPEG videos or photo sequences;
  • Extract subtitles, put videos in one screen, make ringtones...
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Free download Download for Free
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