core-video

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Supply video buffers during play

Is there a way to play a video where the buffers are su开发者_如何学运维pplied through a callback during play time?[详细]

2023-02-16 06:31 分类：问答
Saving video screencast of iPhone application

Is there a way to capture video of a screen from your own application? As far as I see there is no way to do it 开发者_如何学运维with UIImagePickerController (cameras only), but maybe there is a way t[详细]

2023-02-09 10:45 分类：问答
CVPixelBufferCreateWithBytes 's width and height parameters

seems like the Core Video\'s CVPixelBufferCreateWithBytes allows width and height to be 320 and 480. If I try 160, and 240 the image is clic开发者_如何学Pythonked.[详细]

2023-01-26 09:26 分类：问答
iPhone: Real-time video color info, focal length, aperture?

Is there any way using AVFoundat开发者_如何学Goion and CoreVideo to get color info, aperture and focal length values in real-time?[详细]

2023-01-17 08:52 分类：问答
How do I convert a CGImage to CMSampleBufferRef?

I’d like to convert a CGImage to CMSampleBufferRef and append it to a AVAssetWriterInput using the appendSampleBuffer: method. I’ve managed to get the CMSampleBufferRef using the following code, but[详细]

2023-01-16 16:50 分类：问答
I need to upload a video file to a web server iphone sdk

I need to upload a video fi开发者_JS百科le to a web server iphone sdk.It is just a quicktime movie.NSURLConnection.ASIHttpRequest is your friend.[详细]

2023-01-09 18:22 分类：问答
Movie time from QTVisualContext given CVTimeStamp in CAOpenGLLayer rendering method?

I\'m using the standard CoreVideo Display Link + QTVisualContext to render a QuickTime movie into an NSOpenGLView subclass. I would now like to synchronize a timeline view with movie playback. The tim[详细]

2022-12-19 09:26 分类：问答
hardware acceleration / performance and linkage of different macosx graphics apis, frameworks and layers

the more i read about the different type of views/context/rendering开发者_如何转开发 backends, the more i get confused.[详细]

2022-12-18 07:10 分类：问答