2016-12-19 20:45 GMT+01:00 Bernhard Döbler <programmer at bardware.de>: > FFMpeg Doc says > > cutoff > > Set cutoff bandwidth in Hz. > > https://ffmpeg.org/ffmpeg-codecs.html Thank you, I had not completely understood the real issue. As said, feel free to send a patch or open an enhancement ticket. Carl Eugen