Since the first two channels of a 5.1 audio stream are front-left and front-right[1] all you need is to extract those channels. Ffmpeg can do this. Here's what I concoct (untested) based on some web advice.[2] ffmpeg -i input.mkv -vn -c:a copy -ac 2 stereo.flac -vn means don't take the video, -c:a copy means copy the audio stream without decoding/re-encoding, -ac 2 means take two audio channels. It's possible you might have to move the '-ac 2' earlier in the command. Depending on position, options affect either the input or output stream. Let us know how it goes! 1. https://en.wikipedia.org/wiki/5.1_surround_sound 2. https://superuser.com/questions/1041858/converting-5-1-audio-to-stereo-and-keeping-both-tracks joel On Mon, Oct 16, 2017 at 11:18:05PM +0000, Linux for blind general discussion wrote: > I recently downloaded a .mkv file with 5.1 audio encoded to flac and > as I inteneded to listen to it on my Blaze ET, which doesn't support > mkv files, I used mkvextract to extract the audio, producing a 1.1GB > file with roughly a 90 minute runtime. Unfortunately, My Blaze ET > apparently can't handle surround files and trying to play the flac in > ogg123 seems to only be producing sound effects. > > Can anyone suggest either a means of converting the surround flac file > to stereo from the command line or suggest a lightweight command line > flac player that can properly playback surround sound files through > earphones? > > -- > Sincerely, > > Jeffery Wright > President Emeritus, Nu Nu Chapter, Phi Theta Kappa. > Former Secretary, Student Government Association, College of the Albemarle. > > _______________________________________________ > Blinux-list mailing list > Blinux-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/blinux-list -- Joel Roth _______________________________________________ Blinux-list mailing list Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list