Opus tuning

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This page is meant to provide help on tuning the current Opus encoder. It assumes you are working on the master branch, not 1.0.x. As work progresses, some info (especially any line numbers) may become outdated. The numbers in parentheses represent (in order):

  • Impact on quality
  • Quality of current tuning
  • Difficulty

Contents

Parameters

tonality (10 5 1)

trim (7 7 8)

dynalloc (5 5 9)

stereo saving (4 6 6)

spreading (4 7 7)

tapset (1 4 9)

transient estimator (10 8 8)

transient boost (8 6 6)

tf estimator (6 6 9)

Intensity threshold (7 8 3)

skip threshold (3 6 4)

mode/bandwidth decisions (6 4 4)

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