• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: QTMovie quality
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: QTMovie quality


  • Subject: Re: QTMovie quality
  • From: William Stewart <email@hidden>
  • Date: Wed, 13 Aug 2008 12:13:47 -0700

Yes, there is - but I'm not exactly sure what API you use to do that - the QT API list should be able to help

On Aug 13, 2008, at 11:10 AM, Todd Stanley wrote:

Hello All,

I'm trying to use QTMovie for sound replay in an application where I need to be able to change the rate of replay. The problem is that when play is slowed down the sound has a distinct echo, which isn't accaptable in my application. I have programmed the same function with CoreAudio using the TimePitch format converter. The sound is identical to what I get with QTMovie if the render quality is set to 'minimum', but sounds good if render quality is set to maximum. I'm guessing that QTMovie, CoreAudio and QuickTime are all sharing the routines to do the TimePitch shift. My question is this: Is there a way to get the QuickTime movie from QTMovie and set some setting equivalent to render quality to make QTMovie have better sound output - like CoreAudio?

Thanks,
Todd
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden

_______________________________________________ Do not post admin requests to the list. They will be ignored. Coreaudio-api mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
References: 
 >QTMovie quality (From: "Todd Stanley" <email@hidden>)

  • Prev by Date: Re: Problem with Cocoa AU Templates
  • Next by Date: Re: FLLR (compression ?) in AIFF file
  • Previous by thread: QTMovie quality
  • Next by thread: Error on AUGraphInitialize
  • Index(es):
    • Date
    • Thread