Free online OGV to FLV converter

Source format: OGV

OGV is a video container format commonly associated with the Ogg ecosystem and the Theora video codec, often with Vorbis or Opus audio. It is widely used in open-source environments, web publishing, and projects that prefer patent-free media formats. OGV files are often found in browser-based video playback, documentation sites, and software distributions that need broadly accessible open formats.

Target format: FLV

FLV is the Flash Video container format. It was historically used for web video delivery and streaming through Adobe Flash-based players. FLV can still be useful for legacy systems, older web applications, and archival workflows that require compatibility with older playback software. Its main advantage is its long-standing support in legacy media tools, though it is now considered outdated for modern web use.

How to perform the conversion

The most reliable way to convert OGV to FLV is with FFmpeg, a widely used command-line multimedia tool that supports both formats.

1. Install FFmpeg if it is not already available on your system.
2. Open a terminal or command prompt in the folder containing your OGV file.
3. Run a conversion command such as ffmpeg -i input.ogv output.flv.
4. If you need to control compatibility more carefully, you can specify codecs explicitly, for example ffmpeg -i input.ogv -c:v flv -c:a mp3 output.flv or ffmpeg -i input.ogv -c:v flv -c:a aac output.flv, depending on the playback target.
5. Open the resulting FLV file in a player or editor that supports FLV to verify the output.

If you prefer a graphical workflow, desktop media converters and editors that use FFmpeg internally can also perform this conversion. In such tools, the usual process is to import the OGV file, choose FLV as the output format, and then export or convert.

Notes on quality and compatibility

Because OGV and FLV are different containers and often use different codec combinations, the conversion may involve re-encoding, which can reduce quality slightly compared with the source. If the source video uses Theora, it will usually not be copied directly into FLV; instead, FFmpeg will encode video into a FLV-compatible codec. Audio may also need to be re-encoded for compatibility.

FLV is a legacy format, so playback support is limited in modern browsers and current media software. For best results, use FLV only when you specifically need compatibility with older systems. If the goal is general-purpose distribution, a more modern format such as MP4 is usually a better choice.