Convert AVI to FLV

Free online AVI to FLV converter. No signup required.

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How to Convert AVI to FLV

Follow these simple steps to convert your file in seconds.

  1. 1

    Upload your .avi file

    Drag and drop your .avi file into the upload area, or click "Browse" to select it from your device. Your file is uploaded securely and processed on our servers.

  2. 2

    Click "Convert to FLV"

    Once your file is uploaded, press the convert button to start the AVI to FLV conversion process.

  3. 3

    Wait for the conversion to complete

    The conversion usually takes just a few seconds. You can see the progress in real time while your file is being processed.

  4. 4

    Download your converted .flv file

    When the conversion is finished, click the download button to save your new .flv file. The file is ready to use immediately.

Understanding AVI and FLV Formats

Learn about the source and target file formats to understand what happens during conversion.

Source Format

AVI Video

video/x-msvideo

AVI (Audio Video Interleave) is a multimedia container format introduced by Microsoft in 1992 as part of the Video for Windows framework. It stores video and audio data interleaved together and supports a wide variety of codecs. While AVI is a mature and widely supported format, it lacks many features found in modern containers such as native streaming support and variable frame rates.

Advantages

  • Very wide compatibility with both old and new media players
  • Simple container structure that is easy to process
  • Supports virtually any video and audio codec combination

Limitations

  • No native support for variable frame rate or modern streaming features
  • Poor subtitle and metadata support compared to MKV or MP4
  • Older container design lacks advanced features like chapters

Common Uses

  • Legacy video file storage and archival
  • Video capture from older software and hardware
  • Simple video editing and offline playback

Target Format

Flash Video

video/x-flv

FLV (Flash Video) is a container format that was used to deliver video content over the internet via Adobe Flash Player. It typically contains video encoded with Sorenson Spark or VP6 codecs and audio in MP3 or AAC format. FLV was once the dominant web video format but became obsolete after major browsers discontinued Flash Player support in 2020.

Advantages

  • Compact file sizes with acceptable streaming quality
  • Simple container structure that is quick to parse
  • Large existing archive of legacy web video content

Limitations

  • Obsolete format since Adobe Flash Player reached end-of-life in 2020
  • No modern browser supports FLV playback without third-party tools
  • Limited codec support compared to modern containers like MP4

Common Uses

  • Legacy web video archives and content migration
  • Converting old Flash-based video content to modern formats
  • Historical video content from early streaming platforms

Frequently Asked Questions

Common questions about converting AVI to FLV.

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