[FFmpeg-user] VBR Encoding with libopus

James Darnley james.darnley at gmail.com
Sun Feb 10 23:04:37 CET 2013

On 2013-02-10 22:40, Werner Robitza wrote:
> libopus lets us supply -vbr with the values "off", "on" and "constrained".
> In the latter two modes, how does one choose the quality level?
> -q:a does not seem to have any effect, and Opus falls back to 96 kBit/s.
> Without any option other than -vbr on, it also uses CBR encoding.

Perhaps nobody has added that yet.  I certainly can't see anything like
what is used with libmp3lame or libvorbis.

> Furthermore, the source code (
> https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/libopusenc.c)
> mentions a "compression_level" option, but how can I set this as a user?

-compression_level X where X is between 0 and 10 (inclusive)

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