Re: Adding sound to movie with QTKit
Re: Adding sound to movie with QTKit
- Subject: Re: Adding sound to movie with QTKit
- From: Eric Matecki <email@hidden>
- Date: Wed, 16 Nov 2011 14:31:48 +0100
Thanks, I'll try that.
(Sorry Robert for the msg to your address...)
However, I don't like creating temporary files :)
Would it work if I put the sound (with a prepended AIFF header) into a NSData,
creating a movie from that (movieWithData:error:), and inserting that
movie's audio track into the "video only" movie ?
I'm really new to Cocoa and QTKit...
Thanks.
Robert Martin wrote:
One way: Save your PCM audio to an AIF file, then open it as a QTMovie. Set the attribute 'QTMovieEditableAttribute' to TRUE. It will just have one audio track.
Then:
QTTimeRange videoRange = QTMakeTimeRange(QTZeroTime, [videoTrkOnlyMovie duration]);
[audioTrkOnlyMovie insertSegmentOfTrack:[videoTrkOnlyMovie firstVideoTrack] timeRange:videoRange atTime:QTZeroTime];
Then flatten it.
On Nov 16, 2011, at 5:03 AM, Eric M. wrote:
Hello,
I create my movie this way:
QTMovie* qtMovie = [[QTMovie alloc] initToWritableFile: path error: &nserror];
NSDictionary* attributes = [NSDictionary dictionaryWithObjectsAndKeys:
@"mp4v", QTAddImageCodecType,
[NSNumber numberWithInt: codecHighQuality], QTAddImageCodecQuality,
[NSNumber numberWithLong: 10000L], QTTrackTimeScaleAttribute,
nil];
QTTime duration = QTMakeTime( 10000./mFrameRate, 10000 );
for( ""every frame"" )
{
NSImage* img = ""get the correct frame"";
[qtMovie addImage: img forDuration: duration withAttributes: attributes]
[qtMovie setCurrentTime: [qtMovie duration]];
[img release];
}
How do I add sound to the movie ?
I have the sound in memory in PCM format.
I've found how to add a sound track, but the QTTrack class has only an addImage:... method !
Thanks.
--
Keep intel OUTSIDE my Mac !
Hiii !!! I can see Intel chips creeping around my G5 !
Eric M.
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