Can I adjust conversion quality settings?

Yes. The settings panel lets you control output quality, resolution and format-specific parameters. Default settings are optimized for best results.

What's the best quality setting for J2K to FLV?

For FLV, the High quality preset preserves the most detail. For smaller files, Medium is a good compromise. The default setting is optimized for the best quality-size balance.

Can I convert J2K to FLV on Linux?

Yes. Xonvert works in any modern browser on any operating system — Linux, Windows, macOS, ChromeOS, and mobile platforms all supported.

FLV Video is Adobe Flash Video format once dominant for web video streaming. It is primarily used for legacy Flash-based web video content and archived streams. Uses Sorenson Spark or VP6 video codecs with MP3 or AAC audio

Is Xonvert open source?

Xonvert uses open-source conversion libraries (FFmpeg, libvips, etc.) compiled to WebAssembly. The conversion engine is transparent and trustworthy.

Can I use Xonvert offline?

Yes! Once the converter page has loaded, it works without an internet connection. All conversion logic runs locally in your browser.

Does J2K to FLV conversion work on slow internet?

Yes — and even with no internet at all. Once the page loads, conversion is entirely offline. Speed depends on your device's CPU, not your internet connection.