User manual APPLE WWDC

[. . . ] Redistribution or public display not permitted without written permission from Apple. [. . . ] 264 Video Encoder Real-time capture Access to H. 264 Video Encoder Real-time capture AVCaptureVideoDataOutput buffers may be compressed in real time • I-frame insertion • Bitrate adjustment • I-frame only, I-P, or I-P-B GOP support • And more Related Sessions • Direct Access to Video Encoding and Decoding Nob Hill Thursday 11:30AM Manual Camera Controls Making iOS the premiere platform 
 for computational and pro photography Manual Camera Controls Manual focus Manual exposure Exposure compensation Manual white balance AVFoundation Capture Objects AVCaptureDevice AVCaptureDeviceInput AVCaptureConnection AVCaptureConnection AVCaptureSession AVCaptureStillImageOutput AVCaptureVideoDataOutput AVFoundation Capture Objects AVCaptureDevice AVCaptureDeviceInput AVCaptureConnection AVCaptureConnection AVCaptureSession AVCaptureStillImageOutput AVCaptureVideoDataOutput Manual Focus Focus 101 Lens Sensor Focus 101 Lens Sensor Focus Terms Focus Terms Depth of field Focus Terms Depth of field Macro Macro Focus Terms Depth of field Macro Infinity Infinity Macro Focus Terms Depth of field Macro Infinity Hyperfocal distance Infinity Macro Focus Terms Depth of field Macro Infinity Hyperfocal distance Lens position Infinity Macro What Can You Do Already?AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureFocusModeLocked AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureFocusModeLocked AVCaptureFocusModeAutoFocus AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureFocusModeLocked AVCaptureFocusModeAutoFocus AVCaptureFocusModeContinuousAutoFocus AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureFocusModeLocked AVCaptureFocusModeAutoFocus AVCaptureFocusModeContinuousAutoFocus @property CGPoint focusPointOfInterest; AVCaptureDevice Focus APIs @property AVCaptureFocusMode focusMode; AVCaptureFocusModeLocked AVCaptureFocusModeAutoFocus AVCaptureFocusModeContinuousAutoFocus @property CGPoint focusPointOfInterest; @property(readonly) BOOL adjustingFocus; AVCaptureDevice Focus APIs @property AVCaptureAutoFocusRangeRestriction autoFocusRangeRestriction; AVCaptureDevice Focus APIs @property AVCaptureAutoFocusRangeRestriction autoFocusRangeRestriction; AVCaptureAutoFocusRangeRestrictionNear AVCaptureDevice Focus APIs @property AVCaptureAutoFocusRangeRestriction autoFocusRangeRestriction; AVCaptureAutoFocusRangeRestrictionNear AVCaptureAutoFocusRangeRestrictionFar AVCaptureDevice Focus APIs @property AVCaptureAutoFocusRangeRestriction autoFocusRangeRestriction; AVCaptureAutoFocusRangeRestrictionNear AVCaptureAutoFocusRangeRestrictionFar @property BOOL smoothAutoFocusEnabled; AVCaptureDevice Focus APIs AVCaptureDevice Focus APIs Manual control of the lens position when locking focus AVCaptureDevice Focus APIs Manual control of the lens position when locking focus Key-value observation of the lens position in any focus mode Demo Manual Focus in AVCam Aparna Bhatnagar Camera Software Manual Focus @property(readonly) float lensPosition; Manual Focus @property(readonly) float lensPosition; Read or key-value observe Manual Focus @property(readonly) float lensPosition; Read or key-value observe Scalar values from 0. 0 Smaller values approach macro Larger values approach infinity Manual Focus - (void)setFocusModeLockedWithLensPosition:(float)lensPosition 
 completionHandler:(void (^)(CMTime syncTime))handler; Manual Focus - (void)setFocusModeLockedWithLensPosition:(float)lensPosition 
 completionHandler:(void (^)(CMTime syncTime))handler; Locks focus at an explicit lens position Manual Focus - (void)setFocusModeLockedWithLensPosition:(float)lensPosition 
 completionHandler:(void (^)(CMTime syncTime))handler; Locks focus at an explicit lens position Calls you back when the command has completed Manual Focus - (void)setFocusModeLockedWithLensPosition:(float)lensPosition 
 completionHandler:(void (^)(CMTime syncTime))handler; Locks focus at an explicit lens position Calls you back when the command has completed syncTime == PTS of the first video frame to which your change was applied Manual Focus - (void)setFocusModeLockedWithLensPosition:(float)lensPosition 
 completionHandler:(void (^)(CMTime syncTime))handler; Locks focus at an explicit lens position Calls you back when the command has completed syncTime == PTS of the first video frame to which your change was applied syncTime is on the AVCaptureDevice clock’s timeline Manual Focus AVCaptureVideoDataOutput buffers are synced to the session’s master clock Manual Focus AVCaptureVideoDataOutput buffers are synced to the session’s master clock Manual Focus AVCaptureVideoDataOutput buffers are synced to the session’s master clock [device setFocusModeLockedWithLensPosition:lensPosition
 completionHandler:^(CMTime syncTime {
 // Convert to master clock time
 CMClock masterClock = session. +2 Bracketed Capture 101 Bracketed Capture 101 A burst of still images taken with varied settings from picture to picture Bracketed Capture 101 A burst of still images taken with varied settings from picture to picture Exposure bracket Bracketed Capture 101 A burst of still images taken with varied settings from picture to picture Exposure bracket • Auto—Exposure bias differs ( e. , -2, 0, +2 ) Bracketed Capture 101 A burst of still images taken with varied settings from picture to picture Exposure bracket • Auto—Exposure bias differs ( e. [. . . ] ) Video preview may drop frames Bracketed Capture Supported on all iOS devices Summary AVCaptureView on Yosemite iOS screen recording for app previews Access to hardware video encoder on iOS 8 Powerful new camera controls APIs on iOS 8 • Manual focus • Custom exposure • Exposure target bias adjustment • Manual white balance Still image exposure bracketing Sample Code AVCamManual BracketStripes Available Now! [. . . ]