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Diffstat (limited to 'DOCS')
| -rw-r--r-- | DOCS/man/af.rst | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/DOCS/man/af.rst b/DOCS/man/af.rst index 5c2b066a6b..55bf3d0f85 100644 --- a/DOCS/man/af.rst +++ b/DOCS/man/af.rst @@ -161,6 +161,28 @@ Available filters are: Would play media at 1.2x normal speed, with audio at normal pitch. Changing playback speed would change pitch, leaving audio tempo at 1.2x. + +``scaletempo2[=option1:option2:...]`` + Scales audio tempo without altering pitch. + The algorithm is ported from chromium and uses the + Waveform Similarity Overlap-and-add (WSOLA) method. + It seems to achieve a higher audio quality than scaletempo and rubberband. + + By default, the ``search-interval`` and ``window-size`` parameters + have the same values as in chromium. + + ``min-speed=<speed>`` + Mute audio if the playback speed is below ``<speed>``. (default: 0.25) + + ``max-speed=<speed>`` + Mute audio if the playback speed is above ``<speed>`` + and ``<speed> != 0``. (default: 4.0) + + ``search-interval=<amount>`` + Length in milliseconds to search for best overlap position. (default: 30) + + ``window-size=<amount>`` + Length in milliseconds of the overlap-and-add window. (default: 20) ``rubberband`` High quality pitch correction with librubberband. This can be used in place |