Castle Paradox

Guest · Guest

When I import OGG files, some of them come out slower and lower pitched than they should be. This occurs with both files that were always OGG and ones that were converted to it from MP3.

Why is this happening, and is there a solution to the problem?

Bob the Hamster · Posted: Mon Jan 04, 2010 1:13 pm Post subject: Re: OGG not importing correctly?

Guest · Guest

Yes, they do. They seem completely normal, but then when they get imported, they get slooooow....

TMC · Posted: Mon Jan 04, 2010 10:09 pm Post subject:

This is likely because the sample rate of the music is something unusual. Unfortunately, the SDL_Mixer library, which is used by our default music 'backend' music_sdl, is not very good and can not handle files with unusual sample rates, and even crashes when attempting to play such an MP3 file (which is why we convert all MP3s to OGGs). The solution is to resample the music to something like 44.1kHz.
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Bob the Hamster · Posted: Tue Jan 05, 2010 7:49 am Post subject:

Good point. What is the sample rate of the files, Guest?

J_Taylor · Posted: Tue Jan 05, 2010 11:05 am Post subject:

This is a good question. I've encountered the same problem. Like, I import the music as a sound effect, it turns out fine; I import it as music, too slow.

And my sample rate is whatever Magix sets it at... Oh, yeah. Magix Music Maker 7 was freeware last I checked. The new ones aren't, though. Not that that's a prob for me.
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Bob the Hamster · Posted: Tue Jan 05, 2010 11:32 am Post subject:

The easiest way that I know of to check sample rate is by opening the file in audacity.

Guest · Guest

Looks like my sample rate is 48000Hz. Do I just change the "Project Sample Rate" down to 44100, and then export it again to fix this?

Bob the Hamster · Posted: Tue Jan 05, 2010 1:34 pm Post subject:

Guest · Guest

Thanks very much--it works great now! Happy

By the way, is there a way to quickly change the sample rate for a whole bunch of OGGs, or am I going to have to do it manually one by one?

Bob the Hamster · Posted: Tue Jan 05, 2010 3:11 pm Post subject:

Hmmm... you could probably do it with http://sox.sourceforge.net/ and a batch file, but depending on how many files you have to work with, it may or may not be worth the trouble of figuring it out...

TMC · Posted: Wed Jan 06, 2010 3:43 am Post subject:

We could automatically detect and resample OGG files in incompatible sample rates, but unfortunately we'd have to include something like oggdec and ogginfo. (But oggdec at least is much smaller than oggenc, ogginfo probably also)