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Convert FLV to WebM - Bring Flash Videos to Modern Browsers

Transform outdated Flash videos into HTML5-ready WebM format. Play everywhere.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format

Step 3: Convert files

Read Terms of use before using

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format

Step 3: Convert files

Read Terms of use before using

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Flash Videos No Longer Play?

Your old FLV files are stuck in the past. Adobe Flash Player was discontinued in 2020, and modern browsers no longer support FLV playback. Those archived videos, tutorials, and animations are now essentially unwatchable without conversion.

WebM is the solution. It is the open-source video format designed specifically for HTML5 web playback. Converting your FLV files to WebM brings them back to life in every modern browser without plugins or special software.

How to Convert FLV to WebM

Upload your FLV file - Drag and drop or click to select your Flash video
Confirm WebM output - WebM is pre-selected for optimal web compatibility
Download your video - Ready for HTML5 playback in any browser

The entire process happens in your browser. No software installation required, no account needed.

Why FLV Files Stopped Working

FLV (Flash Video) dominated online video from the early 2000s through 2015. YouTube, Hulu, and countless websites relied on Flash Player to stream video content. Then the shift happened:

Security vulnerabilities - Flash became a frequent target for malware
Mobile incompatibility - iOS never supported Flash; Android dropped it in 2012
Performance issues - Flash drained batteries and CPU resources
HTML5 emergence - Native browser video eliminated the need for plugins

Adobe officially ended Flash Player support on December 31, 2020. Major browsers now block Flash content entirely. In our testing, Chrome, Firefox, Safari, and Edge all refuse to play FLV files natively.

FLV vs WebM - Technical Comparison

Understanding the differences helps explain why WebM is the ideal replacement for Flash video:

Codec - FLV typically uses Sorenson Spark or H.263; WebM uses VP8/VP9 (more efficient)
Browser support - FLV requires obsolete plugins; WebM plays natively in all modern browsers
File size - WebM achieves similar quality at 30-50% smaller file sizes
Licensing - FLV codecs had proprietary elements; WebM is completely royalty-free
Mobile - FLV never worked on iOS; WebM plays on all smartphones and tablets

For web video in 2024 and beyond, WebM is the clear standard. Google developed it specifically as an open alternative to proprietary formats.

Common Use Cases

Archiving Old Content

Have a library of training videos, product demos, or creative projects saved as FLV? Convert them to WebM to preserve access. The original files become useless as Flash-compatible software disappears.

Website Migration

Updating an old website that embedded Flash videos? WebM slots directly into HTML5 video tags. Your content becomes accessible again without redesigning the entire page.

Video Editing Projects

Found FLV source footage you need to edit? Most modern video editors struggle with FLV input. Converting to WebM first gives you a format that works with current editing software.

When to Choose a Different Format

WebM is excellent for web delivery, but consider alternatives in specific situations:

FLV to MP4 - Choose MP4 if you need maximum device compatibility, especially for older smart TVs or media players that do not support WebM
FLV to MKV - Choose MKV for archival storage with multiple audio tracks or subtitles
FLV to MOV - Choose MOV if your workflow centers on Apple software like Final Cut Pro

For embedding videos on websites or serving content through modern browsers, WebM remains the best choice due to its compression efficiency and universal HTML5 support.

Quality and File Size

WebM uses VP9 video compression, which is highly efficient. In our testing, converted files typically measured 30-40% smaller than the original FLV while maintaining equivalent visual quality. This makes WebM ideal for web delivery where bandwidth matters.

The conversion preserves your video resolution and frame rate. A 720p FLV at 30fps becomes a 720p WebM at 30fps. Audio is transcoded to Opus or Vorbis codec, both of which offer excellent quality at low bitrates.

Works on Every Device

Our converter runs entirely in your browser:

Windows, Mac, Linux, Chromebook
Chrome, Firefox, Safari, Edge
iPhone, iPad, Android phones and tablets

No downloads, no plugins, no Flash Player needed. Upload your FLV, get your WebM, done.

Pro Tip

If your FLV file has multiple audio tracks or embedded captions, convert to MKV first to preserve those elements, then convert to WebM for web delivery. Direct FLV to WebM conversion typically retains only the primary audio track.

Common Mistake

Trying to play FLV files by installing old Flash Player versions. This creates security vulnerabilities. Converting to WebM is safer and provides universal playback without legacy software.

Best For

Modernizing archived Flash video content for web embedding, HTML5 video players, and cross-browser compatibility without requiring any plugins.

Not Recommended

If you need to preserve advanced container features like multiple subtitle tracks or chapter markers, consider MKV instead. WebM prioritizes web streaming efficiency over complex metadata.

Frequently Asked Questions

Adobe discontinued Flash Player in December 2020. All major browsers now block Flash content for security reasons. FLV files require Flash Player to run, so they no longer play without specialized legacy software.

Modern WebM encoding (VP9) is highly efficient. In most cases, you will not notice quality loss. The conversion maintains your original resolution and frame rate while often producing a smaller file size.

Yes. WebM is supported natively by Chrome, Firefox, Edge, Safari, and Opera. It plays without plugins on Windows, Mac, Linux, iOS, and Android devices. This is the main advantage over FLV.

Both work well for web delivery. WebM offers slightly better compression and is royalty-free. MP4 has broader legacy device support. For modern websites, either format works; WebM edges ahead on file size efficiency.

Conversion time depends on file size and your device speed. A typical 5-minute video converts in under a minute. Longer files or slower devices may take several minutes.

Yes. You can upload and convert multiple FLV files in a batch. Each file processes independently, so you can queue up an entire folder of Flash videos for conversion.

Most major platforms converted their video libraries to MP4 or WebM before Flash ended. Sites that did not update lost their video content. Personal FLV files remain playable only through conversion to modern formats.

No. Our converter runs entirely in your web browser. There is nothing to download or install. Just upload your FLV file, convert, and download the WebM result.

Yes. Audio tracks are converted to Opus or Vorbis codec, which are the standard audio formats for WebM containers. Both offer excellent quality and are supported by all modern browsers.