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HomeFLV vs M4V
.flv
.m4v

FLV vs M4V

Compare Flash Video and MPEG-4 Video formats — understand the key differences and when to use each

Format Overview

FLV

Flash Video

Flash Video (.flv) is a video file format.

.flvvideo

M4V

MPEG-4 Video

MPEG-4 Video (.m4v) is a video file format.

.m4vvideo

FLV vs M4V: Feature Comparison

FeatureFLVM4V
Full NameFlash VideoMPEG-4 Video
File Extension.flv.m4v
Categoryvideovideo
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use FLV vs M4V

Use FLV when you need:

  • •Files in Flash Video format for maximum compatibility
  • •Industry-standard video format support
  • •Wide software and platform compatibility

Use M4V when you need:

  • •Files in MPEG-4 Video format for specific workflows
  • •Optimized video format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

FLV M4VM4V FLV
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Learn More About These Formats

FLV Converter M4V Converter

Frequently Asked Questions

What is the difference between FLV and M4V?
FLV (Flash Video) and M4V (MPEG-4 Video) are both video file formats. FLV files use the .flv extension while M4V uses .m4v. They differ in compression, quality, compatibility, and intended use cases.
Can I convert FLV to M4V for free?
Yes! Convert999 lets you convert FLV to M4V completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, FLV or M4V?
It depends on your use case. FLV (Flash Video) may be better for certain workflows, while M4V (MPEG-4 Video) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

FLV Converter

Convert from FLV

M4V Converter

Convert from M4V

File Tools

Compress, resize, merge

Convert to FLV

All sources → FLV

Convert to M4V

All sources → M4V

Format Statistics

Trends & data 2025

More Format Comparisons

JPGvsPNGPNGvsWEBPJPGvsWEBPSVGvsPNGHEICvsJPGBMPvsJPGTIFFvsJPGGIFvsPNG