af_lavrresample: add normalize suboption

This commit is contained in:
wm4
2015-09-08 22:04:45 +02:00
parent 0eb72d786c
commit 4eae4a5da7
2 changed files with 13 additions and 1 deletions

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@@ -59,6 +59,13 @@ Available filters are:
(If you just want to set defaults for this filter that will be used
even by automatically inserted lavrresample instances, you should
prefer setting them with ``--af-defaults=lavrresample:...``.)
``normalize=<yes|no>``
Whether to normalize when remixing channel layouts (default: yes). This
is e.g. applied when downmixing surround audio to stereo. The advantage
is that this guarantees that no clipping can happen. Unfortunately,
this can also lead to too low volume levels. Whether you enable or
disable this is essentially a matter of taste, but the default uses
the safer choice.
``o=<string>``
Set AVOptions on the SwrContext or AVAudioResampleContext. These should
be documented by FFmpeg or Libav.