Every time you re-encode a video, there is a theoretical loss in quality. However, if you use a high bitrate or "Constant Quality" setting in HandBrake, the difference will be invisible to the human eye.

Most people don’t realize that the world’s most popular video player is also a powerful converter. Since it is open-source and free, it is the safest "free download" option available.

Regardless of the software you choose, the process generally follows these four steps:

Users who want a quick conversion without installing new software. 2. HandBrake (Best for High Quality)

Most mobile devices cannot play FLV files natively.

Drag your FLV file into the window, choose the "Fast 1080p30" preset (or similar), ensure the format is set to MP4, and click Start Encode .

Use the "Add File" or "Open Media" button to load your FLV video.