On Mon, Apr 3, 2017 at 1:25 PM, Cecil Westerhof <ce...@decebal.nl> wrote:
> On Monday 3 Apr 2017 20:58 CEST, William Caulfield wrote: > > > On Sat, Apr 1, 2017 at 1:21 PM, Cecil Westerhof <ce...@decebal.nl> > wrote: > > > >> I was asked to make videos during a ToastMasters contest. I had > >> ordered a microphone for this, but sadly it did not arrive in time. > >> So I needed to use the internal microphone from my Canon HS60 SX. > >> Being away about ten meters from the speakers, their voices are > >> much to soft. So I needed to pump up the audio. I did this with: > >> ffmpeg -y -i speaker.MP4 -vcodec copy -af volume=3 > >> speakerAudioInc.MP4 > >> > >> Is that the correct way, or is there a better way? > >> > > Not really an answer to your question, but speaking as an audio > > engineer: > > > > The boost you want is around 2.5Khz. That's where vocals are > > understood. 700hz up to 3.5khz is probably a good range. Avoid > > boosting below 400hz (muddy) and above 10Khz (zingy). > > > > I guess I'm suggesting some sort of EQ before the volume increase. > > Not sure how that is done in FFMPEG. > > That is good to know. (Know I have to find out how to do that.) > > You can get as complicated as you need to, but start with something like this: equalizer=f=2500:width_type=h:width=500:g=3 -- *William Caulfield *| *ContentBridge Systems* Product Manager, Digital Media & Systems | www.contentbridge.tv _______________________________________________ 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".
