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  1. homeHome
  2. chevron_rightFLV to AAC

FLV to AACConverter — Fast & Free Online

Drag and drop your FLV file to convert it to AAC. Results ready in seconds. FLV (FLV (Flash Video)) is adobe flash's video format.

FromFLVarrow_forwardToAAC
uploadConvert FLV to AAC Now
check_circle100% Free
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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 AAC Conversion Works

Flash Video (FLV) packages Sorenson Spark or VP6 video in Adobe's Flash container, now largely obsolete following the end of Flash Player support. Advanced Audio Coding (AAC) uses psychoacoustic lossy compression similar to MP3 but with improved efficiency, delivering better quality at the same bitrate. This extracts the audio stream from the video container, discarding the video track. The audio track is decoded and re-encoded (or stream-copied if the codec matches) while the video frames are discarded. The result is a standard AAC file readable by any compatible application. 1converter handles FLV-to-AAC conversion server-side: files are uploaded over HTTPS, processed on isolated cloud infrastructure, and the converted output is available for download for 24 hours before automatic deletion. No account is required for standard conversions.

How to Convert FLV to AAC

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

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Step 1

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

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2

Step 2

Confirm AAC as the target format

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3

Step 3

Pick the resolution, codec, and bitrate for the AAC 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 AAC 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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aac

Output file

Size:0.7 MB
Saved:-69%
69%
Size Reduction
5s
Processing Time
95%+
Quality Retained

This visualization shows the typical conversion process from FLV to AAC 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 AAC 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 AAC?

Discover the advantages of converting your FLV files to AAC format

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FLV offers streaming

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AAC provides apple standard

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AAC provides efficient

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Fast FLV to AAC conversion in seconds

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AAC plays on all major devices and platforms

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 AAC converter in real-world scenarios

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Streaming content in AAC

Convert FLV to AAC for this purpose quickly and easily.

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2

Webinar recordings in AAC

Convert FLV to AAC for this purpose quickly and easily.

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3

YouTube uploads from FLV recordings

Convert FLV to AAC for this purpose quickly and easily.

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4

FLV files for youtube

Convert FLV to AAC for this purpose quickly and easily.

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5

FLV files for streaming

Convert FLV to AAC for this purpose quickly and easily.

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Trusted by Professionals In

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Frequently Asked Questions

Everything you need to know about converting FLV to AAC

No software installation needed. Our FLV to AAC converter works entirely in your web browser on any device - desktop, tablet, or mobile.
Yes! Our batch conversion feature lets you upload and convert multiple FLV files to AAC 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.
Your original FLV file and the converted AAC file are automatically deleted from our servers within 24 hours for your privacy and security.
Yes, our basic FLV to AAC conversion is completely free. No registration required. Premium plans offer larger file sizes and batch processing.
Yes! You can set start and end points to trim your FLV video during conversion to AAC. No need for separate video editing software.

Still Have Questions?

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

Contact SupportView All FAQs
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Learn More About File Conversion

Helpful guides and tutorials related to FLV and AAC 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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