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Questions tagged [qtkit]

The QuickTime Kit is an Objective-C framework (QTKit.framework) with an API for manipulating time-based media.

QuickTime Kit (aka QTKit) is a developer framework that is intended to replace previous APIs for Cocoa developers. This framework is for Mac only, and exists as Objective-C abstractions around a subset of the C interface. Mac OS X v10.5 extends QTKit to full 64-bit support. The QTKit allows multiplexing between Quicktime X and Quicktime 7 behind the scenes so that the user need not worry about which version of Quicktime they need to use.

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Providing data as needed for QTMovie

I understand that if I wanted to provide a QTMovie with data from an arbitrary source as it is needed I probably have to deal with the QTDataReference class, but unfortunately my experience with anything similar is limited to an audio data callback…
Joonas Trussmann
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Cocoa: AVFoundation - no active/enabled connections

I'm trying to build a simple app that captures video off of the built-in iSight camera of a MacBook. I've looked at a couple of example projects on the developer site and am following the tutorial here: Apple's AVFoundation Guide. Each time I keep…
PruitIgoe
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Why am I experiencing low frame rates when using multiple QTCaptureVideoPreviewOutputs with a single QTCaptureSession?

I have an app in which the same captured video is displayed in multiple QTCaptureLayers. I am experiencing very low frame rates. Why is this happening?
Nate Chandler
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examining audio file alternative to spotlight

i'm looking for an efficient alternative to grabbing audio file attributes in case spotlight is turned off. Spotlight's MDItem attributes: kMDItemDurationSeconds, kMDItemAudioEncodingApplication, kMDItemAudioBitRate,…
lulu
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QTKit - Merge two videos with different width and height?

I have just made a simple app which uses QTKit to merge two videos together Here is the problem: I have just discovered that if I try to merge two videos with different width & height the output is a video whose height and width is the same of the…
Alberto
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QTMovie at 29.97 with QTMakeTime

I'm trying to use QTKit to convert a list of images to a quicktime movie. I've figured out how to do everything except get the frame rate to 29.97. Through other forums and resources, the trick seems to be using something like this: QTTime…
bchapman
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QTKit: determine if a QTMovie is paused?

How can I tell, programmatically, if a QTMovie is playing or paused? It seems like it would be simple, but I've combed through the QTMovie and QTMovieView docs rather extensively, and can find nothing of the sort. What am I missing?
zpasternack
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NSBitmapImageRep to RGB with high efficency

I am working on my first mac osx cocoa app for 10.5+ where I have a CVImageBufferRef (captured using QTKit), I need to transfer this image over TCP Socket to the client app. The client app needs RGB values. So here is what I am currently doing (my…
Abduliam Rehmanius
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QTKit PAL Mode

I used MyRecorder sample by QTKit, it records everything but I have a problem that my camera is PAL and the resolution of H264 encoding for PAL and NTSC are different. PAL is 724x568 and NTSC is 724x480. When I choose QT Profile for H264High, it by…
Akash Kava
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Send audio from QTMovie over internet

I have a simple audio playing app that uses QTMovie for a few of it's features. I'm also developing a little ethernet-enabled board to stream MP3 or PCM data to. Is there any way of 'grabbing' what QTMovie is outputting, format it into an array of…
Tristan
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Snow Leopard: 64-bit replacement for QuickTime API

I'm migrating my movie player to 64-bit. At present it is capable of decoding movies with both QuickTime API and FFmpeg. To decode with QuickTime API I create a QTOpenGLTextureContext providing a QTVisualContextRef and then I obtain a decoded frame…
Andrea3000
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Cocoa Add Image At End Of Video

I'm recording a video from the iSight camera using QTCaptureSession. I would like to add an image at the end of the video, so I've implemented the didFinishRecordingToOutputFileAtURL delegate methods. Here's what I've done so far: -…
Oscar Del Ben
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QTKit Play Movie in Slow Motion

I'm trying to play a movie in slow motion and attach it to an existing movie. Here's what I've done so far: QTMovie *originalMovie = ...; QTMovie *slowMotionMovie = ...; [originalMovie insertSegmentOfMovie:slowMotionMovie…
Oscar Del Ben
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I am looking for QTAtomContainer in headerfiles

a lot of quicktime examples refer to QTAtomContainer to set Movie export parameters. I've got all that working code from ancient times. Now I am using xcode 4 and the compiler cannot find QTAtomContainer. According to Apples documentation this…
JackPearse
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How to display current time of a video?

How to do to display current time of a video ? I am developing in Obj-C and I am using QTKit framework. I am wondering how to do for that QTMovieView notify continually my function "refreshCurrentTimeTextField". I found an Apple sample but it turned…
jlink
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