Why don't FLV files play anymore?

Adobe Flash was officially discontinued in December 2020, and all major browsers removed Flash support. FLV files use Flash codecs that modern devices don't support natively. Converting to MP4 solves this permanently.

Will the video quality change?

FLV files require re-encoding to MP4. At a matching or higher bitrate, the output quality is usually visually identical to the original. Very old FLV files were often encoded at low bitrates, so the source material quality limits the result.

Are my files uploaded?

No. All conversion runs in your browser. Your FLV files never leave your device.

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Conversion

FLV to MP4 Converter Online Free

Convert legacy FLV (Flash Video) files to MP4 to preserve old web content. Flash was discontinued in 2020 and FLV files no longer play in any modern browser or device. Converting your FLV archive to MP4 makes the videos watchable again without installing Flash.