Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
AV Foundation
Search
nakajijapan
February 01, 2014
Technology
4
780
AV Foundation
心霊動画アプリ「もう一度ご覧いただこう」を作成してみて
Conference With Developers 2014
nakajijapan
February 01, 2014
Tweet
Share
More Decks by nakajijapan
See All by nakajijapan
サービスにおけるDesign Systemの構築
nakajijapan
6
3.4k
Markdownをリアルタイムに解析する
nakajijapan
4
4.2k
Firebase Authorization
nakajijapan
0
200
Intoducing Izumo
nakajijapan
1
1.8k
Practical CloudKit
nakajijapan
1
1.6k
Introducing to Ajimi - プロダクトを味見していこう
nakajijapan
0
2k
Shari
nakajijapan
1
2.6k
Japan Apple Pay Development
nakajijapan
0
240
業務で絶対必要にならない技術
nakajijapan
0
750
Other Decks in Technology
See All in Technology
Oracle Base Database Service 技術詳細
oracle4engineer
PRO
5
48k
塩野義製薬様のAWS統合管理戦略:Organizations設計と運用の具体例
tkikuchi
0
310
全社を巻き込んだ業務オペレーション改善と、それは事業成長に貢献しているのか?を実感した話
marroooon
0
130
Demystifying Vite Internals
nozomuikuta
3
390
生成AIの活用パターンと継続的評価
asei
3
240
Unlearn Modularity
lemiorhan
6
300
新入社員 オンボーディング改善プロジェクト - シンプルな仕組みで変革のきっかけを
enpipi
0
440
AWS DDKを利用したDataOps事始め
beex
1
170
とある事業会社にとっての Kaggler の魅力
hakubishin3
7
1.6k
Reality is not an End-to-End Prediction Problem: Applied NLP in the Age of Generative AI
inesmontani
PRO
0
110
Microsoft 365 でデータセキュリティを強化しよう
sophiakunii
2
470
エンジニア向け会社紹介資料
caddi_eng
14
270k
Featured
See All Featured
Rails Girls Zürich Keynote
gr2m
93
13k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
26
2k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
5
130
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
9
630
Mobile First: as difficult as doing things right
swwweet
222
8.9k
Pencils Down: Stop Designing & Start Developing
hursman
119
11k
Building Your Own Lightsaber
phodgson
102
6k
Become a Pro
speakerdeck
PRO
24
4.9k
Teambox: Starting and Learning
jrom
132
8.7k
Code Reviewing Like a Champion
maltzj
519
39k
Fontdeck: Realign not Redesign
paulrobertlloyd
81
5.2k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
26
1.4k
Transcript
"7'PVOEBUJPO ৺ྶಈըΞϓϦʮ͏Ұ͝ཡ͍ͨͩ͜͏ʯΛ࡞ͯ͠Έͯ !OBLBKJKBQBO
ࠓ͢͜ͱ w ࣗݾհ w ΞϓϦհ w "7'PVOEBUJPOΛ࣮ͬͨ͋Ε͜Ε w ॴײ
ࣗݾհ !OBLBKJKBQBO QBQFSCPZDP
!JTPEJOF
!JTPEJOF ςϨϏͰΔΑ͏ͳ৺ྶ൪ Έ͍ͨͳಈը࡞Γ͍ͨΜʙ
͍
None
IUUQPXLSJOGPNPWJF ͏Ұ͝ཡ͍ͨͩ͜͏ ৺ྶಈըΞϓϦ
ओͳػೳ w ಈըը w ಈըʹ৺ྶΛೖΕΔ w ಈըʹςϩοϓͱϫΠϓ w ಈըͷγνϡΤʔγϣϯʹ߹ΘͤͯφϨʔγϣϯ ΛೖΕΔ
w ιʔγϟϧڞ༗
w .FEJB1MBZFS'SBNFXPSL w 6*,JU ্ҐͷϑϨʔϜϫʔΫ
"7'PVOEBUJPO
ௐࠪ
ௐࠪ w "7'PVOEBUJPO1SPHSBNNJOH(VJEF w .PWJOHUP"7,JUBOE"7'PVOEBUJPOr w $PSF*NBHF&GGFDUTBOE5FDIOJRVFTr w
"EWBODFE&EJUJOHXJUI"7'PVOEBUJPOr
ߏ
εϩʔϞʔγϣϯಈը TFD TFD TFD φϨʔγϣϯԻ ϫΠϓ ը૾߹ ಈը݁߹ ಈը݁߹
࣮
ಈը݁߹
// 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
// 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
// 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
ը૾ͷ߹ͱ Ξχϝʔγϣϯ
None
// 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
ϫΠϓಈը
None
// 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
εϩʔϞʔγϣϯ
// 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
εϩʔϞʔγϣϯ ϫΠϓಈը ը૾ͷ߹ͱΞχϝʔγϣϯ ಈը݁߹ ࣮
"7'PVOEBUJPO
ॴײ w Ϋϥε໊͔ͬͨΓ࣮ྔ͕ଟͯ͘େมʂ w ͱ͍͑ઃܭ͢Β͍͠ w ใ͕গͳ͍ w ϋϚΔͱ໎ঢ়ଶ w
ࣄͰશ͘׆͔ͤͳ͍ʂʂʂ
4BNQMF.PWJF IUUQTXXXZPVUVCFDPNXBUDI WLKPXF43%* %FNP.PWJF IUUQTXXXZPVUVCFDPNXBUDI WSKUNK:6
5IBOLT