Looking for a fast and easy way to convert FLV files to MP4 format? Change My File offers the best free FLV to MP4 converter online. Whether you're a content creator, video editor, or just need to play an old Flash video, you can convert FLV to MP4 free without installing any software.

Our online converter supports quick uploads and delivers high-quality MP4 files compatible with all devices and platforms, including iPhone, Android, Windows, and Mac.

Why Convert FLV to MP4?

The FLV (Flash Video) format is outdated and no longer supported by most browsers or media players. Converting to MP4 offers these benefits:

Full compatibility with modern devices
Smaller file size with high-quality video
Seamless playback on mobile and desktop
Easy editing and uploading to YouTube, Instagram, and more

Switch to MP4 and make your videos future-proof.

How to Convert FLV to MP4 Online?

Using Change My File is simple:

Upload your FLV file from your device or cloud storage.
Our tool instantly begins the FLV to MP4 conversion.
Download your MP4 video in just a few clicks.

No registration. No watermarks. Completely free.

FLV to MP4 Converter – Features

Fast Video Conversion
Instant processing with no delays.
Safe & Secure Uploads
Your files are encrypted and automatically deleted after conversion.
Works on All Devices
Convert FLV to MP4 on mobile, tablet, or desktop—no app needed.
Cloud-Based & Always Free
No hidden charges, no limits, no sign-up.

What Is FLV and Why Is MP4 Better?

FLV (Flash Video) is a format once widely used for video streaming but now mostly obsolete. MP4 (MPEG-4 Part 14) is the industry standard and supported by all major platforms.

That’s why converting from FLV to MP4 is essential for compatibility, performance, and ease of use.

Try the #1 Free FLV to MP4 Converter Online

Don’t waste time with complicated software or unreliable sites. Change My File is trusted by thousands of users worldwide for quick, safe, and free FLV to MP4 conversions.

Whether you're converting for personal use or professional projects, we’ve got you covered.

Start your conversion now – upload your FLV and get a high-quality MP4 in seconds!

Frequently Asked Questions

Q: Is the FLV to MP4 converter really free?

Yes! Our service is 100% free with no usage limits.

Q: Will I lose quality after converting?

No. We ensure minimal loss with high-quality output.

Q: Can I use this tool on mobile?

Absolutely. Our FLV to MP4 converter works on iPhone, Android, and all browsers.

Information about MP4

File extension

mp4

File category

Video

Stands for

MPEG-4 Video stream

Developer

Moving Picture Experts Group

Overview

It stores multimedia data. It is commonly used by manufacturers (those produce mobile products) as well as by Apple for audio, video and still images. It offers higher flexibility and is compatible with both audio and video files. The Format provided by these files i.e MPEG-4 is commonly used online for streaming the videos. Any Movie, video or Audio file can be easily downloaded or streamed online with this extension which can be free or chargeable as well, such as downloading from iTunes. The payment can be made using credit or debit cards. These files may also include audio books, photos, podcasts, songs, movies, not making them limited to just audios and videos. This format has become more common as they are being used in iPod and PlayStation Portable(PSP). Commonly portable media players are advertised as “MP4 players” although they are capable of playing other media format as well like ‘AMV format'.

Technical description

MPEG-4 files are officially named under extension .mp4 and this is the only official extension for MPEG-4 PART-14 formats. These files were introduced in 2001 under the standards of ISO/IEX 14496-1:2001. It runs on AAC encoding which restricts the users from copying the data of the files. The data embedding can be done on these files using any private stream. For instance, hint tracks to add the streaming information into the file. These files are similar to most of the modern containers containing data information which allows internet streaming.

Links

wikipedia.org

Information about FLV

File extension

flv

File category

Video

Stands for

Flash Video

Developer

Adobe Systems (initially developed by Macromedia)

Overview

It is a multimedia container file format which is used over the internet to provide digital video content to the users. Digital video content includes TV shows or series, movies; etc. Adobe Flash Player 6 and new versions provide support to it. To play flash video from Personal Computer and online websites we need an FLV player. Although, Apple iOS does not support Flash, yet, with the help of additional software, one can play flash videos. Also, it is a common platform for various websites that allows video streaming such as YouTube, Yahoo! Video, Metacafe, Hulu; etc . With the help of screen capturing and other recording programs, screen recording is possible for flash videos. Furthermore, it also supports a screen share or screen cast.

Technical description

FLV files mostly have video bitstreams which are one of the variants of H.263 Standard and it is named as Sorenson park(FourCC FLV1). The SWF files and this extension uses the identical way to encode data. There are two variants available for screen casting. First one is lossy as it reduces colour depth or bit depth (number of bits used to indicate the colour of one pixel) and compresses the data. The second type is only compatible with Flash Player 8 and the newer versions. Both these aforesaid kinds are based on bitmap tile. Uncompressed Audio or ADPCM format audio is also supported by it. This format has header and packets in its video structure. A standard header includes signature, version, flags and header size.

Links

wikipedia.org