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"7'PVOEBUJPO
৺ྶಈըΞϓϦʮ͏Ұ͝ཡ͍ͨͩ͜͏ʯΛ࡞ͯ͠Έͯ
!OBLBKJKBQBO
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ࠓ͢͜ͱ
w ࣗݾհ
w ΞϓϦհ
w "7'PVOEBUJPOΛ࣮ͬͨ͋Ε͜Ε
w ॴײ
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ࣗݾհ
!OBLBKJKBQBO
QBQFSCPZDP
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!JTPEJOF
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!JTPEJOF
ςϨϏͰΔΑ͏ͳ৺ྶ൪
Έ͍ͨͳಈը࡞Γ͍ͨΜʙ
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͍
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No content
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IUUQPXLSJOGPNPWJF
͏Ұ͝ཡ͍ͨͩ͜͏
৺ྶಈըΞϓϦ
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ओͳػೳ
w ಈըը
w ಈըʹ৺ྶΛೖΕΔ
w ಈըʹςϩοϓͱϫΠϓ
w ಈըͷγνϡΤʔγϣϯʹ߹ΘͤͯφϨʔγϣϯ
ΛೖΕΔ
w ιʔγϟϧڞ༗
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w .FEJB1MBZFS'SBNFXPSL
w 6*,JU
্ҐͷϑϨʔϜϫʔΫ
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"7'PVOEBUJPO
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ௐࠪ
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ௐࠪ
w "7'PVOEBUJPO1SPHSBNNJOH(VJEF
w .PWJOHUP"7,JUBOE"7'PVOEBUJPOr
w $PSF*NBHF&GGFDUTBOE5FDIOJRVFTr
w "EWBODFE&EJUJOHXJUI"7'PVOEBUJPOr
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ߏ
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εϩʔϞʔγϣϯಈը
TFD TFD TFD
φϨʔγϣϯԻ
ϫΠϓ
ը૾߹
ಈը݁߹ ಈը݁߹
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࣮
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ಈը݁߹
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// Assetੜ
AVURLAsset *videoAsset = [[AVURLAsset alloc] initWithURL:movieURL options:nil];
!
// CompositionTrackੜ
AVMutableCompositionTrack* compositionVideoTrack;
compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
!
// Ξηοτ͔ΒτϥοΫΛऔಘ
AVAssetTrack *videoTrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
!
// ઃఆ
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:videoTrack
atTime:self.currentTimeDuration
error:nil];
[compositionVideoTrack setPreferredTransform:[[[videoAsset tracksWithMediaType:AVMediaTypeVideo]
objectAtIndex:0] preferredTransform]];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeAudio
preferredTrackID:kCMPersistentTrackID_Invalid];
// Assetੜ
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0]
atTime:self.currentTimeDuration error:nil];
self.currentTimeDuration = [mixComposition duration];
!
// Layer InstructionͷՃ
AVMutableVideoCompositionLayerInstruction *layerInstruction;
layerInstruction = [AVMutableVideoCompositionLayerInstruction
videoCompositionLayerInstructionWithAssetTrack:compositionVideoTrack];
!
[self.layerInstructions addObject:layerInstruction];
ϝσΟΞใΛอ࣋͠ɺͦͷใΛऔಘͰ͖Δ
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// Assetੜ
AVURLAsset *videoAsset = [[AVURLAsset alloc] initWithURL:movieURL options:nil];
!
// CompositionTrackੜ
AVMutableCompositionTrack* compositionVideoTrack;
compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
!
// Ξηοτ͔ΒτϥοΫΛऔಘ
AVAssetTrack *videoTrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
!
// ઃఆ
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:videoTrack
atTime:self.currentTimeDuration
error:nil];
[compositionVideoTrack setPreferredTransform:[[[videoAsset tracksWithMediaType:AVMediaTypeVideo]
objectAtIndex:0] preferredTransform]];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeAudio
preferredTrackID:kCMPersistentTrackID_Invalid];
// Assetੜ
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0]
atTime:self.currentTimeDuration error:nil];
self.currentTimeDuration = [mixComposition duration];
!
// Layer InstructionͷՃ
AVMutableVideoCompositionLayerInstruction *layerInstruction;
layerInstruction = [AVMutableVideoCompositionLayerInstruction
videoCompositionLayerInstructionWithAssetTrack:compositionVideoTrack];
!
[self.layerInstructions addObject:layerInstruction];
ө૾ΛऔΓग़͢
ԻΛऔΓग़͢
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// Assetੜ
AVURLAsset *videoAsset = [[AVURLAsset alloc] initWithURL:movieURL options:nil];
!
// CompositionTrackੜ
AVMutableCompositionTrack* compositionVideoTrack;
compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
!
// Ξηοτ͔ΒτϥοΫΛऔಘ
AVAssetTrack *videoTrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
!
// ઃఆ
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:videoTrack
atTime:self.currentTimeDuration
error:nil];
[compositionVideoTrack setPreferredTransform:[[[videoAsset tracksWithMediaType:AVMediaTypeVideo]
objectAtIndex:0] preferredTransform]];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeAudio
preferredTrackID:kCMPersistentTrackID_Invalid];
// Assetੜ
[compositionAudioTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0]
atTime:self.currentTimeDuration error:nil];
self.currentTimeDuration = [mixComposition duration];
!
// Layer InstructionͷՃ
AVMutableVideoCompositionLayerInstruction *layerInstruction;
layerInstruction = [AVMutableVideoCompositionLayerInstruction
videoCompositionLayerInstructionWithAssetTrack:compositionVideoTrack];
!
[self.layerInstructions addObject:layerInstruction];
ίϯϙδγϣϯΛΈཱͯΔ
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ը૾ͷ߹ͱ
Ξχϝʔγϣϯ
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No content
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// generate parent layer
CALayer* layerRoot = [CALayer layer];
CALayer* layerVideo = [CALayer layer];
.
.
.
.
videoComp = [AVMutableVideoComposition videoComposition];
videoComp.animationTool = [AVVideoCompositionCoreAnimationTool
videoCompositionCoreAnimationToolWithPostProcessingAsVideoLayer:layerVideo
inLayer:layerRoot];
$"-BZFSʹ$"#BTJD"OJNBUJPOͰ
ઃఆͨ͠ΞχϝʔγϣϯΛՃ͢Δ
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ϫΠϓಈը
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No content
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// Assetੜ
AVURLAsset *videoAsset = [[AVURLAsset alloc] initWithURL:movieURL options:nil];
// CompositionTrackੜ
AVMutableCompositionTrack* compositionVideoTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
// Trackऔಘ
AVAssetTrack* videoTrack = [[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
!
// ઃఆ
CMTime timeDuration;
timeDuration = videoAsset.duration;
!
[compositionVideoTrack insertTimeRange:CMTimeRangeMake(kCMTimeZero, timeDuration)
ofTrack:videoTrack
atTime:kCMTimeZero
error:nil];
[compositionVideoTrack setPreferredTransform:[videoTrack preferredTransform]];
AVMutableVideoCompositionLayerInstruction* layerInstruction;
layerInstruction = [AVMutableVideoCompositionLayerInstruction
videoCompositionLayerInstructionWithAssetTrack:compositionVideoTrack];
[layerInstruction setTransform:CGAffineTransformConcat(scale, trnsration) atTime:kCMTimeZero];
!
[self.layerInstructions addObject:layerInstruction];
ΞϑΟϯม
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εϩʔϞʔγϣϯ
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// શମʹରͯ͠εϩʔϞʔγϣϯॲཧΛ͔͚Δ
CMTime durationSlow = CMTimeSubtract(videoAsset.duration, CMTimeMake(9, 1));
[mixComposition scaleTimeRange:CMTimeRangeMake(CMTimeMake(19, 1), durationSlow)
toDuration:CMTimeMake(durationSlow.value * 2.0, durationSlow.timescale)];
࣮ࡍͷө૾Λ̎ഒͷ࣌ؒͰग़ྗͤ͞Δ
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εϩʔϞʔγϣϯ
ϫΠϓಈը
ը૾ͷ߹ͱΞχϝʔγϣϯ
ಈը݁߹
࣮
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"7'PVOEBUJPO
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ॴײ
w Ϋϥε໊͔ͬͨΓ࣮ྔ͕ଟͯ͘େมʂ
w ͱ͍͑ઃܭ͢Β͍͠
w ใ͕গͳ͍
w ϋϚΔͱ໎ঢ়ଶ
w ࣄͰશ͘׆͔ͤͳ͍ʂʂʂ
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4BNQMF.PWJF
IUUQTXXXZPVUVCFDPNXBUDI W LKPXF43%*
%FNP.PWJF
IUUQTXXXZPVUVCFDPNXBUDI W SKUNK:6
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5IBOLT