[FFmpeg-trac] #1454(undetermined:closed): FFMPEG Volume not working as documented
FFmpeg
trac at avcodec.org
Sun Jun 17 13:47:34 CEST 2012
#1454: FFMPEG Volume not working as documented
-------------------------------------+-------------------------------------
Reporter: ramitbhalla | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution: invalid
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Changes (by ubitux):
* status: new => closed
* resolution: => invalid
Comment:
Replying to [ticket:1454 ramitbhalla]:
> Summary of the bug: What's the right syntax for -vol
>
> When I run ffmpeg -h the documentation says:
>
> -vol volume change audio volume (256=normal)
>
> So if I want to double the volume should I use 512 and to half should I
use 128?
>
> The website: http://ffmpeg.org/ffmpeg.html#volume
Careful, this is the audio volume filter, not the -vol option (the -vol
option will transparently insert a volume audio filter, the option is just
kept for backward compatibility, and as a simpler way of changing the
volume).
-vol 512 should indeed double the volume.
If you want to use the volume audio filter, use -af volume=2.0 (for
example).
Please re-open this ticket if you believe something is still wrong, or
open another one if you think something can be improved in the
documentation.
[...]
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1454#comment:3>
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