Ask YC: Do you know how to cut down a .caf file?

#1

Post by nomad » Thu, Dec 11, 2008, 8:00 PM UTC

We just released an iPhone app that's 2.2mb. We're trying to cut down the audio .caf (.5mb now) to make it more efficient. Any ideas?

Re: Ask YC: Do you know how to cut down a .caf file?

#2

Post by thomasswift » Thu, Dec 11, 2008, 9:10 PM UTC

I really don't think you can. .caf gives you a big increase in quality to size. Is there a reason you choose .caf over mp3?

Re: Ask YC: Do you know how to cut down a .caf file?

#3

Post by nomad » Thu, Dec 11, 2008, 9:30 PM UTC

thomasswift wrote: post #2

I really don't think you can. .caf gives you a big increase in quality to size. Is there a reason you choose .caf over mp3?

You're only allowed to use .caf, .aif, or .wav files.

Re: Ask YC: Do you know how to cut down a .caf file?

#4

Post by thomasswift » Thu, Dec 11, 2008, 9:39 PM UTC

nomad wrote: post #3

thomasswift wrote: post #2

I really don't think you can. .caf gives you a big increase in quality to size. Is there a reason you choose .caf over mp3?

You're only allowed to use .caf, .aif, or .wav files.

Your right. Sorry about that.

Re: Ask YC: Do you know how to cut down a .caf file?

#5

Post by nomad » Thu, Dec 11, 2008, 9:48 PM UTC

thomasswift wrote: post #4

nomad wrote: post #3

Earlier quoted context omitted.

You're only allowed to use .caf, .aif, or .wav files.

Your right. Sorry about that.

No worries. There's no clear cut reason for that limitation, it's just there.

Re: Ask YC: Do you know how to cut down a .caf file?

#6

Post by thomasswift » Thu, Dec 11, 2008, 10:41 PM UTC

nomad wrote: post #5

thomasswift wrote: post #4

Earlier quoted context omitted.

Your right. Sorry about that.

No worries. There's no clear cut reason for that limitation, it's just there.

On the Stanford iPhone class they have some sample code for using AVAudioPlayer (it's in 2.2) and they are loading an mp3 from within the project.

http://www.stanford.edu/class/cs193p/cgi-bin/index.php Lecture 20 - 20-AVWSamples.zip

This is an intersting area to me, so post any reasons you shy away from it. Cheers!