2018-12-28 11:32 GMT+01:00, Michael Koch <astroelectro...@t-online.de>: > Am 28.12.2018 um 10:18 schrieb Carl Eugen Hoyos: >> 2018-12-28 10:14 GMT+01:00, Michael Koch <astroelectro...@t-online.de>: >>> Am 28.12.2018 um 00:50 schrieb Moritz Barsnick: >>>> On Thu, Dec 27, 2018 at 20:29:34 +0100, Michael Koch wrote: >>>>> I think the bigger problem is "outputting through the computers >>>>> speakers". As far as I know it depends on the operating system, and >>>>> under Windows it's impossible. >>>> You can always pipe to ffplay, which plays audio also under Windows >>>> (using SDL audio). >>> I did try that some time ago, without success. >> What did you try? (Command line and complete, uncut console output >> missing.) > > Below is the console output. It's an ultrasonic converter and it works > fine when I send the output to a file. > > F:\Sound\Ultraschall_Konvertierung>c://ffmpeg/ffmpeg -f dshow -channels > 2 -i aud > io="Mikrofon (Realtek High Definiti" -f lavfi -i > aevalsrc="sin(3000*2*PI*t):c=st > ereo:s=44100" -filter_complex > "[0]volume=3,highpass=f=3000,highpass=f=3000,highp > ass=f=3000,highpass=f=3000[sound];[sound][1]amultiply,lowpass=f=10000,lowpass=f=
> 10000,lowpass=f=10000,lowpass=f=10000" -t 10 -f mp3 pipe:play - > //ffmpeg/ffplay The syntax looks broken here: Do you want to use a named pipe "play"? Iiuc, you have to create this pipe before launching FFmpeg, no need to specify a second output url. Or you want to use the pipe "-", in this case I believe you do not consume it with your ffplay command: > -i pipe:play Finally, I would expect that you have to separate the call to ffmpeg from the call to ffplay: "|" Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
