Re: Adding sound to movie with QTKit
Re: Adding sound to movie with QTKit
- Subject: Re: Adding sound to movie with QTKit
- From: Robert Martin <email@hidden>
- Date: Wed, 16 Nov 2011 05:46:06 -0500
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.
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