Summary:
FLV used to power the web in its early days. But now Flash is dead, what do you do with these files? In its early days, this legacy video format, FLV, was popular for streaming video online. However, modern browsers and players have moved on from Flash. This post explains what is FLV, its history, and why it ended. You’ll also learn how to play it without Flash Player and how to convert it to a modern format.
An FLV file is a container format used to deliver media over the Internet to the Adobe Flash Player. It was used for streaming video online because of its efficient delivery on the web and its small file size. However, Flash began to lose its popularity when HTML5 video came along to replace Flash playback. Today, FLV is a legacy format as Adobe ended Flash Player in 2020.
PROS:
PROS
CONS
How to play FLV files after Flash Player discontinued? You don’t need an Adobe Flash Player (FLV player) to open an FLV today. There are still media players that support the FLV container.
VLC Media Player is a long-running open-source media player that has been around for decades. It can open and play FLV natively and many other legacy video formats.
MPC-HC, better known as Media Player Classic – Home Cinema, has built-in splitters and filters to open FLV files. It means you can play them right after installation with no extra tools.
PotPlayer comes with an internal codec collection to play FLVs. It uses hardware acceleration for smooth playback with low resource usage.
AnyMP4 FLV Player is a premium all-media player that can handle local video files beyond Blu-rays. It can play almost every local video file you name, including the legacy FLV format. It includes built-in codecs to decode media streams packed inside FLV containers. Also, its hardware acceleration can process poorly compressed FLVs smoothly.
Here’s how to play FLV files:
1. Download AnyMP4 FLV Player, install it, and complete the setup.
Secure Download
Secure Download
Click Open File in the home interface and select the FLV video you want to play.
2. Once the video is loaded, it will start playing immediately. Use the controls below to pause, resume, and stop the FLV playback.
AnyMP4 FLV Player’s native codec support for FLVs ensures it plays the files smoothly without extra plugins. It is a solid choice when your default players are unable to open and play legacy video formats.
AnyMP4 Video Converter Ultimate is an established video-to-video conversion software. It converts FLV to MP4 locally, meaning your files won’t leave your computer. It ensures safe and secure video conversion process. It can batch-convert multiple files simultaneously without crashing the software or experiencing lag. Also, it uses the most advanced hardware-accelerating media processing to achieve a 120× conversion speed.
1. Download the FLV-to-MP4 converter and complete the installation. After setup, the software opens to the Converter tab.
Secure Download
Secure Download
Click +Add Files to import the FLV videos from your computer. This software does not limit the file size or number of files you can process, so you can upload multiple files.
2. Navigate to Output Format and select MP4 under the Video category. Select Same as Source as your quality preset to convert FLV to MP4 without losing quality.
3. Return to the main interface and toggle on Hardware Acceleration to speed up the conversion. Set the folder destination, then click Convert All to start the conversion.
AnyMP4 Video Converter Ultimate can make legacy Flash Video files easier to play. This software can also do the reverse; check here how to convert MP4 to FLV. Here’s our tip: Avoid upscaling old FLVs to a higher preset like HD 1080p or 4K video. It will only make the video quality worse because it forces the computer to guess the missing details.
CloudConvert
CloudConvert is a universal FLV converter service that supports both media and file types. It can convert FLV to MP3, MP4, SWF, and other formats. However, be aware of its 1 GB file size limit.
Convertio
Convertio is another online service that supports exactly 125 FLV conversions, including FLV to MP4. While it is free to use, free users have a daily conversion of 10 credits.
| FLV | MP4 | SWF | |
|---|---|---|---|
| Developer | Adobe | Moving Picture Experts Group | Adobe |
| Full Filename | Flash Video file | MPEG-4 Part 14 | Small Web Format (originally Shockwave Flash) |
| Filename Extension | .flv | .mp4 | .swf |
| Audio Codec | Speex, G.711, Nellymoser, etc. | AAC, MP3, AC3/E-AC3, or ALAC | Nellymoser Asao, ADPCM, Raw PCM, etc. |
| Compression | Lossy | Lossy | Can be both lossy and lossless |
| Container For | Synchronized video, audio, and metadata | Video, audio, subtitles, and metadata | Multimedia and vector graphics |
| File Size (3-minute 1080p video) | 100 to 400 MB | 200 to 600 MB | 200 to over 500 MB |
| Editing | No, because it is obsolete and unsupported | Yes, but not for smooth editing | Yes, but not for graphic editing |
| Video Quality | Good quality | HD and UHD | It depends if it uses vector graphics or embedded raster bitmaps |
| Use Cases | Legacy web video and FLV streaming | Universal | Legacy web animations and interactive content |
No, FLV videos are no longer used for content or web streaming in 2026. Web browsers and modern OS have dropped native support and switched to HTML5 video standards. However, you may still encounter FLV files when opening legacy training modules, old screen recordings, and archived internet videos.
What does FLV mean?
FLV means Flash Video. It is a digital video format that can store synchronized video, audio, and metadata inside a single container.
How to open FLV files after Flash Player was discontinued?
Even after Flash Player ended, you can still open FLV files using third-party FLV players. As a free option, you can use VLC. But if you want more than basic playback, opt for AnyMP4 FLV Player.
How do I make an FLV file?
You can make an FLV from an existing video regardless of the format. Use AnyMP4 Video Converter Ultimate to convert your existing video to FLV.
Knowing what is FLV explains why these files still appear despite Flash Player's end. Flash is a legacy video format, and the best option depends on what you want to do with the old file. For watching archived FLVs, AnyMP4 FLV Player offers a full-featured playback experience. And to make FLV work on modern browsers and media players, you can use AnyMP4 Video Converter Ultimate to convert Flash videos.
Updated by Alice Thorne to GlossaryMore readings
3 Best Ways to Convert FLV to GIF (Free & Online) in 2026
Convert FLV files into high-quality GIFs without losing frames. Follow our 2026 guide to use the best FLV to GIF converters for Windows, Mac, and web browsers.
FLV to MOV - How to Convert FLV to MOV Without Quality Loss
What is FLV? What is MOV file format used for? How to convert FLV to MOV? This post gives you a detailed FLV vs MOV and 3 ways to convert/change FLV to MOV.
What Is DPG? How to Open & Play DPG Files in 5 Mins
What Is DPG? Read this post to learn how to open and play these Nintendo DS video files on modern devices without sync issues right now!
2 Best AMV Editor Tools for High-Quality Anime Music Videos
Do you want to learn what AMV means? Discover what Anime Music Videos are and what the best video editors are to produce such content for YouTube online.
Add your comments to join the discussion here