Convert FLV to WebM Online Free

Convert FLV video to WebM format with high-quality encoding. Powered by FFmpeg for reliable transcoding of any resolution.

Quick Answer

ChangeThisFile converts your Flash Video to the open WebM format, replacing the obsolete FLV container with modern VP9 encoding. FFmpeg handles the server-side processing while your file is encrypted in transit. Auto-deleted after conversion, no signup required, entirely free to use.

Free, no signup Under 1 minute

Convert FLV to WebM

Drop your FLV file here to convert it instantly

Drag & drop your .flv file here, or click to browse

Convert to WebM instantly

FLV vs WebM: Format Comparison

Key differences between the two formats

Feature	FLV	WebM
Video codec	H.264/VP6/Sorenson Spark	VP8/VP9/AV1
Container	Flash Video	Matroska subset
Compression	Lossy	Lossy
Audio codec	MP3/AAC/Speex	Vorbis/Opus
Streaming	RTMP streaming	Yes (WebRTC native)
Browser support	None (Flash deprecated)	Chrome, Firefox, Edge
Max resolution	1080p typical	8K
Metadata	Basic (onMetaData)	Limited

When to Convert

Common scenarios where this conversion is useful

Device compatibility

Convert FLV to WebM for playback on devices or software that does not support FLV natively.

Cross-platform sharing

Share WebM files with collaborators who use different operating systems or media players.

Video editing preparation

Convert to WebM as required by your video editing software's import format requirements.

File size optimization

Re-encode FLV as WebM to potentially reduce file size while maintaining acceptable quality.

How to Convert FLV to WebM

1

Upload your FLV file

Drag and drop your .flv file onto the converter, or click to browse. Files up to 50 MB are supported for free.
2

Server-side conversion

Your file is securely uploaded and converted on our servers using FFmpeg, the industry-standard multimedia framework. This typically takes a few seconds.
3

Download the result

Once conversion is complete, click Download to save your .webm file. The uploaded file is automatically deleted from our servers.

Frequently Asked Questions

Is the FLV to WebM conversion free?

Yes, completely free. Convert FLV to WebM with no cost, no signup, and no watermarks.

Is my file kept on your servers?

No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.

Is the transfer secure?

Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.

What technology powers this conversion?

The conversion uses FFmpeg, the industry-standard multimedia framework on our servers, ensuring reliable and high-quality output.

Will I lose video quality?

Some quality loss occurs during transcoding between formats. The converter uses high-quality encoding settings to minimize this.

Are subtitles preserved?

Embedded subtitle tracks may not transfer between all container formats. Hardcoded subtitles (burned into video) are always preserved.

Is the audio track preserved?

Yes. The audio track is transcoded and included in the output WebM file.

What video codec is used in the WebM output?

The converter uses the standard codec for WebM: VP8/VP9/AV1.

Can I convert 4K or high-resolution video?

Yes. The converter handles video of any resolution, including 4K and higher. Processing time increases with resolution.

How long does the conversion take?

Conversion time depends on file size and duration. Most files under 50 MB convert in seconds.

Can I convert multiple files at once?

Currently, files are converted one at a time. Upload your next file after downloading the result.

What is the maximum file size?

Files up to 50 MB are supported for free conversion.

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