On 9/20/18, Michael Koch <[email protected]> wrote: > >> >>> c://ffmpeg/ffmpeg -i ultrasonic.wav -f lavfi -i >>> "sine=frequency=15000:sample_rate=48000" -filter_complex >>> "[0]highpass=f=15000,highpass=f=15000,highpass=f=15000,highpass=f=15000[sound];[1]volume=8[sine];[sound][sine]amultiply[mixed];[mixed]lowpass=f=10000,lowpass=f=10000,lowpass=f=10000,lowpass=f=10000" >>> out.wav > > The ultrasonics converter works fine if used with an audio file, but now > I wanted to convert a video and I always get this error message > "Unsupported channel layout "0 channels" which I don't understand. I > want the audio be converted and the video copied as-is. Here is the > console output:
add: aformat=channel_layouts=stereo after aeval filter. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
