As a video file type, FLV is still in use. However, because there’s no longer support for the FLV file format, its general use has declined since 2020. Most web developers prefer to use more up-to-date alternatives such as HTML5 video formats, including MP4, WEBM, and OGG.
FLV and MP4 are very similar file types in terms of video quality. However, MP4 is often considered superior for general use since it’s easier to edit, store, and compress with better results overall. MP4 is more widely compatible than FLV, too.
Apple iOS has never been compatible with Adobe Flash, which means iPhones do not support FLV files natively and will not play on your smartphone. The best way to combat this is to convert the video to a compatible file type, such as MP4.
Typically, Android devices don’t support FLV files. However, you can convert the video file to MP4 or find a third-party media player that may open it.
If you need to upload an FLV file to YouTube, you’re in luck. YouTube supports various video file formats, including FLV. Other formats include MOV, MP4, AVI, WMV, MPG, and more.