MP4をFLVに変換

Convert MP4 to FLV online for free. Fast and easy converter — no software to install, no registration required. Supports batch video files conversion.

MP4

またはファイルをここにドラッグ＆ドロップ

MP4動画ファイルをアップロード

高速変換安全な処理登録不要

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page.convert.mp4ToFlv.faq.title

Why would I convert MP4 to FLV?

FLV was Adobe Flash's native video format. Some legacy web players and streaming systems still require FLV files.

Is FLV still used?

FLV is largely obsolete since Flash Player's discontinuation in 2020. However, some older content management systems still support FLV playback.

Will quality be reduced converting MP4 to FLV?

Conversion involves re-encoding, which may reduce quality slightly. Use high bitrate settings to minimize quality loss.

How long does MP4 to FLV conversion take?

Conversion time depends on video length and resolution. Most short clips convert in under a minute.

Can FLV files play in modern browsers?

No, modern browsers removed Flash support. FLV files require third-party players like VLC or legacy Flash-based players.

What codec does FLV use?

FLV files typically use Sorenson H.263 or VP6 video codecs with MP3 audio. Newer FLV files may use H.264 with AAC audio.

What is the maximum file size for conversion?

Our converter handles video files up to 500 MB. For larger files, consider splitting them first.

Can I convert MP4 to FLV for streaming?

FLV streaming requires server-side RTMP support. Modern streaming uses MP4 with HLS or DASH protocols instead.

MP4をFLVに変換 - Free Online Tool | File Converter Lab