Re: MovieAudioExtraction + mp3 problems [solved]

Subject: Re: MovieAudioExtraction + mp3 problems [solved]

From: Dominic Feira <email@hidden>

Date: Wed, 28 Mar 2007 15:36:04 -0400

Delivered-to: email@hidden

As usual, I find the solution shortly after sending an e-mail to the list.

http://developer.apple.com/qa/qa2006/qa1469.html

The short version: Since I'm using QTKit to load the movie initially, it is loading asynchronously by default. Conversion (which MovieAudioExtraction is) shouldn't be done until that has completed. The other option is to ensure that the movie loaded synchronously.

Dominic Feira / Code Monkey / Ambrosia Software, Inc. -- http://www.AmbrosiaSW.com

On Mar 28, 2007, at 14:38, Dominic Feira wrote:

Hello. I'm having trouble using MovieAudioExtraction to extract audio from mp3s. After about the 12 minute mark in the mp3 I suddenly get just silence. mp3s longer than 15 minutes cause this to happen. I don't have any trouble with any other file formats that QuickTime can handle that I've tried, including m4a, aiff, mov, and wave.

The mp3s in question are CBR, 128kbps, Joint-stereo. I have tried mp3s from various sources and have validated them with a mp3 validator. Both iTunes and QuickTime Player open and play the files correctly.

Has anybody else had trouble with mp3s? Any suggestions?

I wrote a small test application that exhibits the same problem. I can make this available as well as a mp3 that exhibits the problem.

Dominic Feira / Code Monkey / Ambrosia Software, Inc. -- http://www.AmbrosiaSW.com

_______________________________________________ Do not post admin requests to the list. They will be ignored. QuickTime-API mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/quicktime-api/email@hidden This email sent to email@hidden

References:

>MovieAudioExtraction + mp3 problems (From: Dominic Feira <email@hidden>)