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Re: Vu-meter
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Re: Vu-meter


  • Subject: Re: Vu-meter
  • From: Todd Freese <email@hidden>
  • Date: Tue, 2 Aug 2005 12:14:25 -0500

I have not run into this. However, there is something in this QTKit FAQ:

http://developer.apple.com/technotes/tn2005/tn2138.html

Check out the first issue.

Todd


On Aug 2, 2005, at 11:38 AM, Philip Dow wrote:

Check out Apples WhackedTV example. It has a VU meter example in it.

Todd Freese
The Filmworkers Club


Todd. Thanks for this link. I've been looking for ages for a vu meter example that I could understand. Last night I downloaded the code and hacked my way through it, managing to incorporate the vu meter and other audio settings options into my app. I've run into a problem though.


I can sample incoming audio and write it to disk as a movie. I can preview this movie in finder and I can load it in quicktime without any problems, so I know it's a valid movie. However, when I try to load the file into QTKit's QTMovie and either play it or export the audio as an aiff, I run into problems. The movie seems to load, but I can't do anything with it. Any experience with this?

-Phil

Am 01.08.2005 um 23:20 schrieb Todd Freese:




On Aug 1, 2005, at 3:51 PM, Sanri Parov wrote:



On Mon, 01 Aug 2005 16:26:49 -0400, Douglas A. Welton wrote:



I think that NSLevelIndicator be a better choice for what you are trying to
accomplish... or you can easily drawn your own using the QuickTime functions
for metering sound levels and frequencies.






Hmmm... NSLevelIndicator? I can't find it out on 10.3.9.
Maybe is just in Tiger?
BTW, do you please have any kinda clue on using the QuickTime functions
you sayd?
I haven't ever coded anything on QT and I just need a snippet of code
(even in the public domain) or something really illuminating.


Thanks again

--
Sanri Parov
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  • Follow-Ups:
    • Re: Vu-meter
      • From: Philip Dow <email@hidden>
References: 
 >Re: Vu-meter (From: "Douglas A. Welton" <email@hidden>)
 >Re: Vu-meter (From: Sanri Parov <email@hidden>)
 >Re: Vu-meter (From: Todd Freese <email@hidden>)
 >Re: Vu-meter (From: Philip Dow <email@hidden>)

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