FLV to MP4 Converter

Convert FLV files to MP4 online for free. Use this FLV to MP4 converter for uploads, browser playback, device compatibility, editing, and sharing.

Why convert FLV to MP4?

Video formats differ in container support, codecs, upload compatibility, playback behavior, and file size. FLV is often used for legacy Flash archives and older downloaded videos, while MP4 is useful for web video, social uploads, phones, and universal playback. Converting FLV to MP4 helps when a website, app, editor, or device expects the output format.

Before you convert

Check playback, audio sync, aspect ratio, duration, file size, and whether the destination platform accepts the converted file. Keep the original FLV file until you have opened and reviewed the converted MP4 file.

Best uses for MP4

MP4 output is best for web video, social uploads, phones, and universal playback. This converter is useful when you need a practical MP4 copy without installing desktop software.

FLV to MP4 FAQ

How do I convert FLV to MP4?

Upload your FLV file, keep FLV as the input format, choose MP4 as the output, then start the conversion and download the converted file.

What is the best use for this FLV to MP4 converter?

Use FLV to MP4 when your destination accepts MP4 more reliably than FLV, or when the output workflow specifically asks for a MP4 file.

Is this FLV to MP4 converter free?

Yes. You can convert files online without creating an account or installing desktop software.

Will converting FLV to MP4 change quality?

Quality depends on the source file and output format. Check playback, audio sync, aspect ratio, duration, file size, and whether the destination platform accepts the converted file. Keep the original FLV file until you have opened and reviewed the converted MP4 file.