HydrogenAudio

Lossy Audio Compression => Opus => Topic started by: thind on 2018-04-24 09:36:44

Title: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: thind on 2018-04-24 09:36:44
 ::) There is this Complexity check box in some of the lossy formats' encoder settings in TAudio Converter.
What significance does it have ?
Title: Re: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: sveakul on 2018-04-24 20:29:04
From the Xiph opusenc page:

"--comp N
Set encoding computational complexity (0-10, default: 10). Zero gives the fastest encodes but lower quality, while 10 gives the highest quality but slower encoding."

https://mf4.xiph.org/jenkins/view/opus/job/opus-tools/ws/man/opusenc.html (https://mf4.xiph.org/jenkins/view/opus/job/opus-tools/ws/man/opusenc.html)

Title: Re: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: jmvalin on 2018-04-24 23:13:30
Basically, leave it at 10 unless you need the encoding to run faster (and you're willing to accept slightly lower quality).
Title: Re: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: Deathcrow on 2018-04-26 15:17:59
I've always been curious about the impact of this setting. How much is "slightly lower" quality? By how much would I need to increase my bitrate (percentage wise) if I decrease complexity by half.
Title: Re: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: kolt54321 on 2018-05-13 17:56:11
Basically, leave it at 10 unless you need the encoding to run faster (and you're willing to accept slightly lower quality).

This is interesting. Using OPUSENC in Foobar doesn't show the complexity option. Do you know if it's default set to 10 or 0?
Title: Re: I am wondering what does this Complexity option do (in TAudio Converter) ?
Post by: lvqcl on 2018-05-13 20:10:45
From the 2nd post in this thread: "default: 10".