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Re: QTMovie grabing while playback
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Re: QTMovie grabing while playback


  • Subject: Re: QTMovie grabing while playback
  • From: Bob Smith <email@hidden>
  • Date: Fri, 25 Apr 2008 18:34:02 -0700

On Apr 25, 2008, at 7:41 AM, douglas a. welton wrote:

Bob,

re: Quartz Composer
Did you check the "Asynchronous Mode" checkbox on the Movie Loader patch's Settings panel? This box is specifically available to allow for playback of streaming material.

Eh? I don't see a patch called "Movie Loader" at all. I see a Generator patch called "Image With Movie", and the only setting is "Highest Quality". I'm doing all development under Tiger because I have to deploy on older systems, could you be describing something which is new to Leopard? I should repeat my tests under 10.5, it is possible one of these approaches will "just work". That isn't necessarily a solution since I would have to persuade the client to upgrade a pile of old G5 systems, but I should find out if this problem is only on Tiger.


re: QT flaw
The supposition that QuickTime is fundamentally flawed is not accurate. If you had time to explore, I would point you in the direction of the QT Broadcaster interface and the sample code available for receiving (and parsing) RTSP/RTP streams. If you don't have time, don't go down this path - the API is cryptic (at best) and very poorly documented.

Today I agree with you, my jumped-to conclusion isn't justified. Sorry, I was feeling a bit frustrated last night. There is surely some way to get this to work by using the QuickTime C APIs directly, but some subtlety involved in streaming just isn't being handled by the Cocoa APIs, at least not on 10.4. However, other than doing some tests on 10.5, I have to set this aside due to time constraints. I've got something deliverable now, hopefully I'll have a chance to figure out how to do it right later.


Thanks!

Bob

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References: 
 >QTMovie grabing while playback (From: Nikolai Hellwig <email@hidden>)
 >Re: QTMovie grabing while playback (From: "douglas a. welton" <email@hidden>)
 >Re: QTMovie grabing while playback (From: Bob Smith <email@hidden>)
 >Re: QTMovie grabing while playback (From: Randall Meadows <email@hidden>)
 >Re: QTMovie grabing while playback (From: Jean-Daniel Dupas <email@hidden>)
 >Re: QTMovie grabing while playback (From: "Bob Smith" <email@hidden>)
 >Re: QTMovie grabing while playback (From: "douglas a. welton" <email@hidden>)
 >Re: QTMovie grabing while playback (From: Bob Smith <email@hidden>)
 >Re: QTMovie grabing while playback (From: Uli Kusterer <email@hidden>)
 >Re: QTMovie grabing while playback (From: Bob Smith <email@hidden>)
 >Re: QTMovie grabing while playback (From: Scott Anguish <email@hidden>)
 >Re: QTMovie grabing while playback (From: "douglas a. welton" <email@hidden>)
 >Re: QTMovie grabing while playback (From: Bob Smith <email@hidden>)
 >Re: QTMovie grabing while playback (From: "douglas a. welton" <email@hidden>)

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