How to “transcode” FLV into MP4 files with OBS – JAY VERSLUIS
How to Convert OBS Recorded FLV to MP4?
Streamlabs OBS Tutorial - How to change FLV File to MP4 (2019 Version) - YouTube
OBS Studioで録画した動画ファイルの保存先を確認&変更する方法
OBS on Twitter: "There have been a number of new audio features added including Stereo Balancing, to shift audio left and right, and three new audio filters: Invert Polarity, Expander and Limiter.