Zen Convert

Convert FLV to WebM

Free online FLV to WebM converter — no signup, no watermark

Convert FLV (Flash Video) files to WebM (WebM (VP8/VP9)) format online for free. Our FLV to WebM converter runs entirely in your browser — just drag in your file, click convert, and download the result. No software to install, no account required, and your files stay private.

Converting.flvto.webm
Max 2GB · Files deleted in 1h
Drop your FLV file here
or click to browse — only .flv files accepted

How to convert FLV to WebM in 4 steps

  1. 1

    Upload your FLV file

    Drag and drop your FLV file into the converter, or click to browse from your device. We support files up to 2GB.

  2. 2

    Choose WebM as the output format

    WebM is pre-selected. Optionally adjust quality, resolution or bitrate if your file needs custom settings.

  3. 3

    Convert FLV to WebM

    Click the convert button. Our converter processes your FLV file and produces a high-quality WebM output, usually in under a minute.

  4. 4

    Download your WebM file

    Once conversion is complete, download your WebM file. Your original FLV stays untouched and we delete uploaded files within an hour.

Why convert FLV to WebM?

FLV was the dominant format for web video during the Adobe Flash era. While Flash is deprecated, FLV files still exist in many legacy systems and require conversion to modern formats for playback. WebM is a royalty-free, open video format developed by Google specifically for the web. It uses VP8 or VP9 codecs to deliver high-quality video at small file sizes, making it ideal for HTML5 video playback. Converting from FLV to WebM is useful when you need html5 web video embedding or want to take advantage of open source and royalty-free.

Top reasons to switch to WebM

  • HTML5 web video embedding
  • Modern browser-based streaming
  • Open-source video projects

FLV vs WebM: side-by-side

FLV

Pros

  • + Small file sizes
  • + Once-universal web compatibility

Cons

  • Adobe Flash is deprecated
  • No modern browser support
  • Should be converted to MP4 or WebM

WebM

Pros

  • + Open source and royalty-free
  • + Excellent web compression
  • + Native support in Chrome, Firefox, Edge

Cons

  • Limited support on iOS and Safari
  • Slower encoding than H.264
  • Less editing software support

FLV to WebM — Frequently Asked Questions

Is converting FLV to WebM free?

Yes, our FLV to WebM converter is 100% free. There are no hidden fees, no signups required, and no watermarks added to your converted WebM files.

Will I lose quality converting FLV to WebM?

Our converter uses high-quality encoding settings to preserve as much of the original FLV quality as possible in the WebM output. For lossless results, choose the "high quality" preset.

How long does FLV to WebM conversion take?

Most FLV files convert to WebM in 30 seconds to a few minutes, depending on the file size, duration, and your internet connection. Larger files take longer.

Is it safe to upload my FLV file?

Yes. All uploads use encrypted HTTPS connections, files are processed on isolated servers, and converted WebM files are automatically deleted within one hour of conversion.

Can I convert FLV to WebM on mobile?

Absolutely. Our FLV to WebM converter works in any modern browser on iPhone, Android, iPad, Windows, macOS and Linux — no app install required.

What's the maximum file size for FLV to WebM?

You can convert FLV files up to 2GB to WebM for free. For larger files, contact us about our batch and premium options.

Related video conversions

Other format pairs people convert alongside FLV to WebM.