Changes between Initial Version and Version 1 of How to change audio volume up-down with FFmpeg

Timestamp:

07/04/2012 03:43:19 AM (11 months ago)

Author:

burek

Comment:

--

How to change audio volume up-down with FFmpeg

@@ +1 @@
+To turn the audio volume up or down, you may use FFmpeg's Audio Filter named [http://ffmpeg.org/ffmpeg.html#volume volume], like in the following example.
+If we want our volume to be half of the input volume:
+{{{
+ffmpeg -i input.wav -af 'volume=0.5' output.wav
+}}}
+
+In older versions of FFmpeg, the option "-af" wasn't implemented, so we had to use this:
+{{{
+ffmpeg -f lavfi -i "amovie=input.wav,volume=0.5" output.wav
+}}}
+
+More info here: http://ffmpeg.org/trac/ffmpeg/ticket/720