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    Compress a FLV video

    Compress FLV (Flash Video) files, a container from the Adobe Flash era.

    Accepted source formats

    FLV

    How it works

    1

    Drop your FLV.

    2

    Choose the recommended conversion to MP4 for universal compatibility.

    3

    Download the result, compressed and modernized.

    Common mistakes

    • Using a source file of poor quality.
    • Publishing without checking the final result.
    • Confusing file size, dimensions and quality.
    • Overwriting the original file without keeping a copy.

    Pro tips

    • Always keep an original version.
    • Test several settings before downloading.
    • Use WebP for the web when possible.
    • Choose descriptive file names for SEO.

    Privacy and file handling

    File handling depends on the selected tool and format. For sensitive files, review the tool information before starting the operation.

    How to convert a FLV file to Compress a FLV video?

    Drag and drop or select your FLV file from your device. Click "Convert" and wait a few seconds. Get your converted Compress a FLV video file instantly. Convert FLV files to Compress a FLV video online. If a file fails, try a smaller version or split it when the tool supports that workflow.

    Supported formats

    Source format: FLV. Target format: Compress a FLV video. The final format should match how you plan to use it. Always check the output file before sharing it. Convert FLV files to Compress a FLV video online. The result depends on what the FLV and Compress a FLV video formats can preserve.

    What is the maximum FLV file size?

    The practical file-size limit depends on the format, browser and memory available on your device. If a file fails, try a smaller version or split it when the tool supports that workflow. Keep the original until you have approved the result. Convert FLV files to Compress a FLV video online.

    Which browsers are compatible?

    Use a recent, up-to-date browser. Behaviour can vary with the file format, available memory and the features supported by your device. Always check the output file before sharing it. The final format should match how you plan to use it. Keep the original until you have approved the result.

    Can I use the tool on mobile?

    You can try the tool on a phone or tablet with a recent browser. Large files may require more memory or be easier to process on a desktop computer. Choose a file, run the conversion, then check the result before downloading it. Current quotas and higher plans are shown on the Pricing page.

    Discover all our tools

    Convert, compress, merge and edit your files in a few clicks.

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    Guides and tutorials

    Learn how to use our tools with our detailed guides.

    Frequently asked questions

    Since Adobe Flash's end (2020), FLV is no longer natively read by browsers. Only VLC and a few dedicated software still read it. Converting to MP4 is best practice.

    FLVs were massively used from 2005-2015 for YouTube, Vimeo, and streaming sites. Many old downloads and professional archives are still in FLV.

    By choosing a bitrate equivalent to the source, no — conversion uses the same underlying H.264 codec. If the FLV uses old Sorenson Spark codec, H.264 conversion even improves compression.

    Our batch mode accepts multiple FLVs and converts them all to MP4 with the same settings. Ideal for normalizing an archive of historical videos.

    Yes, our audio extraction tool separates the audio track of an FLV into MP3, preserving the original soundtrack.
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