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1 year agoYou may want to pass through the audio so it’s not reencoded. The top answer on this stack overflow article has an example. https://stackoverflow.com/questions/9913032/how-can-i-extract-audio-from-video-with-ffmpeg
And a copy/paste:
ffmpeg -i input-video.avi -vn -acodec copy output-audio.aac
It sounds like your ask is for a recommendation to back up personal files from disparate locations to a server.
I use a self hosted Nextcloud instance for this purpose.