AVCaptureInputPortFormatDescriptionDidChangeNotification confusion
AVCaptureInputPortFormatDescriptionDidChangeNotification confusion
- Subject: AVCaptureInputPortFormatDescriptionDidChangeNotification confusion
- From: Ben <email@hidden>
- Date: Sat, 29 Nov 2014 08:31:46 +0000
I'm trying to get the video dimensions by using AVCaptureInputPortFormatDescriptionDidChangeNotification however the width & height returns a number way higher than I am expecting.
Expecting 320/480 or similar but getting width = 1088784512, height = 1819304813.
Any ideas what I am doing wrong?
- (void)avCaptureInputPortFormatDescriptionDidChangeNotification:(NSNotification *)notification {
AVCaptureInputPort * captureInputPort = notification.object;
CMFormatDescriptionRef formatDescription = captureInputPort.formatDescription;
if (formatDescription) {
CMVideoDimensions dimensions = CMVideoFormatDescriptionGetDimensions(formatDescription);
}
Printing description of dimensions:
(CMVideoDimensions) dimensions = (width = 1088784512, height = 1819304813)
Printing description of formatDescription:
<CMAudioFormatDescription 0x19acd1f0 [0x3aa74460]> {
mediaType:'soun'
mediaSubType:'lpcm'
mediaSpecific: {
ASBD: {
mSampleRate: 44100.000000
mFormatID: 'lpcm'
mFormatFlags: 0xc
mBytesPerPacket: 2
mFramesPerPacket: 1
mBytesPerFrame: 2
mChannelsPerFrame: 1
mBitsPerChannel: 16 }
cookie: {(null)}
ACL: {(null)}
}
extensions: {<CFBasicHash 0x19acd250 [0x3aa74460]>{type = immutable dict, count = 1,
entries =>
2 : <CFString 0x3ab282e0 [0x3aa74460]>{contents = "VerbatimSampleDescription"} = <CFData 0x19acdca0 [0x3aa74460]>{length = 52, capacity = 52, bytes = 0x00000034736f7774000000000000ffff ... 0000000200000002}
}
}
}
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