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MP4 to FLV Converter — Fast & Free | 1converter
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  2. MP4 to FLV

MP4 to FLV Converter — Fast & Free Online

Real-time MP4 to FLV converter. Watch your file transform before your eyes. FLV format offers small size.

FromMP4ToFLV
Convert MP4 to FLV Now
100% Free
Secure & Private
Fast Conversion
1CONVERTER Media Team - 1CONVERTER Team Logo
1CONVERTER Media Team·Audio & Video Specialists·Updated Mar 15, 2026
Official

How to Convert MP4 to FLV

Follow these simple steps to convert your MP4 files to FLV format in seconds

1

Step 1

Upload your MP4 file

2

Step 2

Choose FLV as output format

3

Step 3

Adjust quality and conversion settings if needed

Visual Conversion Preview

mp4

Source file

Size:2.4 MB
Format:MP4

Converting...

~2s

flv

Output file

Choose Your Conversion Quality

Select the perfect balance between quality and file size for your MP4 to FLV conversion

Low Quality

Smallest file size, faster conversion

File Size:Very Small
Speed:Very Fast
Quality Level
Recommended

Why Convert MP4 to FLV?

Discover the advantages of converting your MP4 files to FLV format

MP4 offers good compression

MP4 offers streaming ready

Secure conversion with automatic file deletion

Popular Use Cases

See how professionals use our MP4 to FLV converter in real-world scenarios

1

Training videos converted to FLV

Convert MP4 to FLV for this purpose quickly and easily.

2

Social media with FLV output

Convert MP4 to FLV for this purpose quickly and easily.

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MP4

Frequently Asked Questions

Everything you need to know about converting MP4 to FLV

Yes, our basic MP4 to FLV conversion is completely free. No registration required. Premium plans offer larger file sizes and batch processing.
Your original MP4 file and the converted FLV file are automatically deleted from our servers within 24 hours for your privacy and security.
Absolutely. All uploads are encrypted with SSL/TLS, processed on secure servers, and automatically deleted within 24 hours. We never share or access your files.
Yes! You can set start and end points to trim your MP4 video during conversion to FLV. No need for separate video editing software.
MP4 (MPEG-4 Part 14) is The most widely used video container format. It was introduced in 2001 by MPEG.
Most MP4 to FLV conversions complete in under 30 seconds. Larger or more complex files may take 1-2 minutes depending on file size and settings.

Still Have Questions?

Our support team is here to help you with any questions about MP4 to FLV conversion.

Contact SupportView All FAQs
No Registration
4

Step 4

Click Convert to process your file

5

Step 5

Download your converted FLV file

Average conversion time: Less than 2 minutes

Size:1.4 MB
Saved:-41%
41%
Size Reduction
2s
Processing Time
99%+
Quality Retained

This visualization shows the MP4 to FLV conversion process. A source MP4 file of 2.4 MB is converted to FLV format resulting in 41% file size reduction while retaining 99%+ quality. The conversion takes approximately 2s.

Medium Quality

Balanced quality and size

File Size:Medium
Speed:Fast
Quality Level

High Quality

Better quality, larger files

File Size:Large
Speed:Moderate
Quality Level

Maximum Quality

Best quality, largest files

File Size:Very Large
Speed:Slow
Quality Level

Quality Selection Tips

When to use Low/Medium:

  • ‱Web uploads and social media sharing
  • ‱Email attachments with size limits
  • ‱Quick previews and thumbnails

When to use High/Maximum:

  • ‱Professional printing and publishing
  • ‱Archive and long-term storage
  • ‱When quality is more important than size

Video Tip: Medium quality is ideal for web streaming. Use High or Maximum for videos you plan to edit further or archive.

Maintain video quality from MP4 source

Batch process multiple MP4 files at once

Additional Features

200+
Supported Formats
243+
File Formats
<2 min
Average Time
24/7
Available
3

Video editing with FLV output

Convert MP4 to FLV for this purpose quickly and easily.

4

MP4 files for legacy web video

Convert MP4 to FLV for this purpose quickly and easily.

5

MP4 files for old websites

Convert MP4 to FLV for this purpose quickly and easily.

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Can't Find Your Conversion?

We support 200+ file formats. Browse our complete list of conversions or start converting now!

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