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  2. chevron_rightFLV to KEY

FLV to KEYConverter — Fast & Free Online

Convert FLV to KEY with compression settings. Balance output quality against file size. FLV (FLV (Flash Video)) is adobe flash's video format.

FromFLVarrow_forwardToKEY
uploadConvert FLV to KEY Now
check_circle100% Free
shield_lockedSecure & Private
boltFast Conversion
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1CONVERTER Media Team - 1CONVERTER Team Logo
1CONVERTER Media Team·Audio & Video Specialists·Updated Mar 15, 2026
Official
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How FLV to KEY Conversion Works

The Flash Video format packages Sorenson Spark or VP6 video in Adobe's Flash container, now largely obsolete following the end of Flash Player support. Converting to KEY produces a document file that stores data in the KEY format. This conversion changes the file's encoding, compression method, and supported feature set. Metadata such as creation date and embedded colour profiles is preserved where the target format supports it. This makes KEY the practical choice when the destination system requires it or when the original format is not supported by the target application. 1converter runs this conversion on the server: your file is uploaded encrypted over HTTPS, converted using trusted open-source libraries, and the output is held for 24 hours before automatic deletion.

How to Convert FLV to KEY

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

1

Step 1

Drop your FLV file into the box above or pick it from your device

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2

Step 2

Confirm KEY as the target format

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3

Step 3

Pick the resolution, codec, and bitrate for the KEY video

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4

Step 4

Start the conversion and watch the live progress

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5

Step 5

Download the finished KEY file — it is deleted from our servers after 24 hours

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Average conversion time: Less than 2 minutes

Visual Conversion Preview

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flv

Source file

Size:2.4 MB
Format:FLV
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Converting...

~5s

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key

Output file

Size:1.5 MB
Saved:-39%
39%
Size Reduction
5s
Processing Time
99%+
Quality Retained

This visualization shows the typical conversion process from FLV to KEY format, including expected size reduction and quality retention.

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Choose Your Conversion Quality

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

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Low Quality

Smallest file, basic quality

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

Balanced size and quality

File Size:Medium
Speed:Fast
Quality Level
target

High Quality

Larger file, great quality

File Size:Large
Speed:Moderate
Quality Level
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Maximum Quality

Largest file, best possible quality

File Size:Very Large
Speed:Slow
Quality Level

tips_and_updatesQuality 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.

Why Convert FLV to KEY?

Discover the advantages of converting your FLV files to KEY format

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FLV offers streaming

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Secure conversion with automatic file deletion

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KEY provides apple integration

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KEY output ready for streaming and download

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Preserve audio tracks during conversion

Additional Features

243+
Supported Formats
<2 min
Average Time
24/7
Available
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Popular Use Cases

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

1

FLV files for mac presentations

Convert FLV to KEY for this purpose quickly and easily.

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2

FLV files for apple ecosystem

Convert FLV to KEY for this purpose quickly and easily.

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3

YouTube uploads from FLV recordings

Convert FLV to KEY for this purpose quickly and easily.

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4

Training videos converted to KEY

Convert FLV to KEY for this purpose quickly and easily.

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5

Old websites with KEY output

Convert FLV to KEY for this purpose quickly and easily.

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Trusted by Professionals In

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Web Development
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Frequently Asked Questions

Everything you need to know about converting FLV to KEY

Most FLV to KEY conversions complete in under 30 seconds. Larger or more complex files may take 1-2 minutes depending on file size and settings.
Yes! Our batch conversion feature lets you upload and convert multiple FLV files to KEY simultaneously, saving you significant time.
Free users can convert FLV files up to 10 MB. Pro plan supports up to 200 MB, and Business plan supports up to 500 MB per file.
No software installation needed. Our FLV to KEY converter works entirely in your web browser on any device - desktop, tablet, or mobile.
FLV has some limitations: Deprecated, Flash discontinued. Converting to KEY can help overcome some of these limitations.
Yes! You can set start and end points to trim your FLV video during conversion to KEY. No need for separate video editing software.

Still Have Questions?

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

Contact SupportView All FAQs
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Learn More About File Conversion

Helpful guides and tutorials related to FLV and KEY conversions

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Can't Find Your Conversion?

We support 243+ file formats. Browse our complete list of conversions or start converting now!

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