11 replies to this topic

[PS9K]

You can check current codec used by server: join server, "Server > Information". It will show "CELT 0.11.0" right now.

 

http://mumble.source...threshold.29.3F

 

 

Murmur.ini:

opusthreshold=0

[R.E.M.]

I'm sure the developers probably know what you're talking about but maybe you could explain your idea a bit more less tech-savy people like me could understand it too. That way we might see the potential advantages of your idea a bit more clearly.

 

Also if I understand this URL link you've given correctly, does this mean that anybody who is using a version of mumble older than 1.2.4 will not be able to support this codec? Dosen't that mean they can't use mumble at all?

[PS9K]

http://opus-codec.org/

http://opus-codec.org/comparison/

 

http://celt-codec.org/ <- celt is old prototype of opus

mumble version - release date

1.2.3 - Feb. 2011

1.2.4 - Jun. 2013

1.2.5 - Feb. 2014

usage stats (http://stats.mumble.info/) as 03.04.2014:
 

    Version    Count
1    1.2.5     143099
2    1.2.4     141996
3    1.2.3     35664
4    1.2.2     2045
5    1.2.5-248-g640b532     1012
6    1.2.5-257-gc03d8fc     808
7    1.1.x     564
8    1.2.5-245-g221a5d7    331
9    1.2.5-253-gf2bfe2f     299
10    1.2.1     261

    Operating system version    Count
1    Windows 7 SP1    187973
2    Windows 8     56674
3    Windows XP     23356
4    Windows 7     18558
5    10.9.2 (i386)     12531
6    Windows Vista SP2     8895
7    10.8.5 (i386)     3122
8    10.7.5 (i386)     2532
9    10.6.8 (i386)     2026
10    10.9.1 (i386)     1977

    Operating system    Count
1    Win    298131
2    OSX    23682
3    X11    7940

So yes, ~10% players will need to update their 3 year old software. I believe actual number will be less since most people get mumble specifically for tf2center...

Edited by PS9K, 03 April 2014 - 01:15 PM.

[PS9K]

Can we have this fixed please? It should take 10 minutes literally. Just one line in Murmur.ini.

[Foxy]

In theory it takes 10 minutes, however:

 

Will need to restart server to be picked up

10% (ish) of userbase will no longer be able to join mumble until they upgrade

Ongoing support handling of why they can no longer connect for a while

Also need to compare the cost of all this, plus disruptions to each player affected, against the benefits it gives (which seem small from all the documentation).

 

Having said all this, I'm happy to do it (probably tomorrow morning for the restart). Just wanted to say why it's not just a single config line change.

[Kenneth]

Was this done foxy?

[ninjaMooCow]

Kenneth,

Just a question.  What is the advantage of opus over celt?  I mean, current mumble sounds fine and I don't think we care much about bandwidth concerns.

 

Just wonder if "not broke, don't fix it" applies.

[PS9K]

Kenneth,
Just a question.  What is the advantage of opus over celt?  I mean, current mumble sounds fine and I don't think we care much about bandwidth concerns.
 
Just wonder if "not broke, don't fix it" applies.

CELT is part of opus and have less capabilities
 

Why not keep the SILK and CELT codecs separate?
Opus is more than just two independent codecs with a switch. In addition to a linear prediction "SILK mode" and a MDCT "CELT mode" it has a "hybrid mode," where speech frequencies up to 8 kHz are encoded with LP while those above 8 kHz are encoded with MDCT. This is what allows Opus to have such high speech quality around 32 kb/s. Another advantage of the integration is the ability to switch between these modes seamlessly, without any "glitch" and without any out-of-band signalling.

CELT:
http://upload.wikime...m-simple-en.svg
OPUS (note celt encoder is part of it):
http://upload.wikime...iagram-1-en.svg

[zkxs]

Also, if the server restart is worrying anybody, Mumble clients by default will automatically reconnect if they are disconnected.  They'll even join the channel they were in.  When I've restarted my Mumble server, the clients all usually reconnect in ~5 seconds.

[Kenneth]

My personal opinion on this, wait until the next version of mumble comes out and do it then. That way we can blame it on the new version coming out, and we could easily have a popup for everyone joining the site saying "Please download the new mumble release"

 

This next release will also hopefully have a fix for the "I'm already in the server but I clicked the mumble link and now everything is stuffed up" problem.

[ninjaMooCow]

5 December, 2013

After more than two years of development, we have released Opus 1.1. This includes:

• new analysis code and tuning that significantly improves encoding quality, especially for variable-bitrate (VBR),
• automatic detection of speech or music to decide which encoding mode to use,
• surround with good quality at 128 kbps for 5.1 and usable down to 48 kbps, and
• speed improvements on all architectures, especially ARM, where decoding uses around 40% less CPU and encoding uses around 30% less CPU.

[Waffle]

As stated above this has been done. Arhciving