@stephann np, ffmpeg is a great tool, once you learn how the flags work it starts to become second nature. Also don't forget to use it's paired ffprobe tool to inspect video files, a handy trick on most upload sites is to download the transcoded version and inspect it to get the exact settings the site uses for audio/video, then use those when you convert with ffmpeg yourself, most sites will then just do a stream copy instead of re-converting, keeping better quality.