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
よくある動画アプリのあれを実装したい。
Search
nakajijapan
May 28, 2014
Technology
0
2.7k
よくある動画アプリのあれを実装したい。
Instagram, Vine, SlideStory のような動画アプリで動画を保存する仕込みが気になったので実装しました。
nakajijapan
May 28, 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
10
3.7k
Markdownをリアルタイムに解析する
nakajijapan
5
4.4k
Firebase Authorization
nakajijapan
0
260
Intoducing Izumo
nakajijapan
1
1.9k
Practical CloudKit
nakajijapan
1
1.7k
Introducing to Ajimi - プロダクトを味見していこう
nakajijapan
0
2.2k
Shari
nakajijapan
1
2.7k
Japan Apple Pay Development
nakajijapan
0
270
業務で絶対必要にならない技術
nakajijapan
0
830
Other Decks in Technology
See All in Technology
マーケットプレイス版Oracle WebCenter Content For OCI
oracle4engineer
PRO
3
960
Yahoo!しごとカタログ 新しい境地を創るエンジニア募集!
lycorptech_jp
PRO
0
110
2025-07-06 QGIS初級ハンズオン「はじめてのQGIS」
kou_kita
0
170
KubeCon + CloudNativeCon Japan 2025 Recap by CA
ponkio_o
PRO
0
300
面倒な作業はAIにおまかせ。Flutter開発をスマートに効率化
ruideengineer
0
260
LangChain Interrupt & LangChain Ambassadors meetingレポート
os1ma
2
320
fukabori.fm 出張版: 売上高617億円と高稼働率を陰で支えた社内ツール開発のあれこれ話 / 20250704 Yoshimasa Iwase & Tomoo Morikawa
shift_evolve
PRO
2
7.8k
MobileActOsaka_250704.pdf
akaitadaaki
0
130
スタートアップに選択肢を 〜生成AIを活用したセカンダリー事業への挑戦〜
nstock
0
210
改めてAWS WAFを振り返る~業務で使うためのポイント~
masakiokuda
2
260
PO初心者が考えた ”POらしさ”
nb_rady
0
210
SaaS型なのに自由度の高い本格CMSでサイト構築と運用のコスパ&タイパUP! MovableType.net の便利機能とユーザー事例のご紹介
masakah
0
110
Featured
See All Featured
It's Worth the Effort
3n
185
28k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
Faster Mobile Websites
deanohume
307
31k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.8k
Done Done
chrislema
184
16k
Embracing the Ebb and Flow
colly
86
4.7k
Why You Should Never Use an ORM
jnunemaker
PRO
58
9.4k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Statistics for Hackers
jakevdp
799
220k
Rebuilding a faster, lazier Slack
samanthasiow
82
9.1k
Transcript
BQQಓ !OBLBKJKBQBO Α͋͘Δಈը ΞϓϦͷ͋Ε Λ࣮͍ͨ͠
!OBLBKJKBQBO 4PGUXBSF&OHJOFFS (.01&1"#0JOD
৺ྶࣸਅΞϓϦ͓Θ͔Γ͍͚ͨͩͨͩΖ͏͔
৺ྶಈըΞϓϦ͏Ұ͝ཡ͍ͨͩ͜͏
"7'PVOEBUJPO ࠓճʂʂ
͋ͷಈըΛอଘ͢ΔΠ ϯλʔϑΣʔε͕ؾʹ ͳͬͨͷͰ࣮ͨ͠ɻ
༷
εΫϦʔϯΛλον ͨ͠ΒಈըΛอଘ։ ࢝ͯ͠εΫϦʔϯ͔ ΒΕͨΒอଘऴྃ
"7$BQUVSF4FTTJPO
"7$BQUVSF0VUQVU
"7$BQUVSF0VUQVU ɾ"7$BQUVSF.PWJF'JMF0VUQVU ɾ"7$BQUVSF4UJMM*NBHF0VUQVU ɾ"7$BQUVSF7JEFP%BUB0VUQVU ɾ"7$BQUVSF"VEJP%BUB0VUQVU
"7$BQUVSF0VUQVU ɾ"7$BQUVSF.PWJF'JMF0VUQVU ɾ'JMFT ɾ"7$BQUVSF4UJMM*NBHF0VUQVU ɾ*NBHF ɾ"7$BQUVSF7JEFP%BUB0VUQVU ɾ"7$BQUVSF"VEJP%BUB0VUQVU
ɾ-JWFEBUB
"7$BQUVSF0VUQVU ɾ"7$BQUVSF.PWJF'JMF0VUQVU ɾ'JMFT ɾ"7$BQUVSF4UJMM*NBHF0VUQVU ɾ*NBHF ɾ"7$BQUVSF7JEFP%BUB0VUQVU ɾ"7$BQUVSF"VEJP%BUB0VUQVU
ɾ-JWFEBUB
"7$BQUVSF"VEJP%BUB0VUQVU AVCaptureVideoDataOutputSampleBufferDelegate AVCaptureAudioDataOutputSampleBufferDelegate "7$BQUVSF7JEFP%BUB0VUQVU
#pragma mark - AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureAudioDataOutputSampleBufferDelegate ! - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
fromConnection:(AVCaptureConnection *)connection { ! if (!CMSampleBufferDataIsReady(sampleBuffer)) { NSLog(@"sampleBuffer data is not ready"); } ! CMTime currentTime = CMSampleBufferGetPresentationTimeStamp(sampleBuffer); ! if (self.touching) { ! // Video if ([captureOutput isKindOfClass:[AVCaptureVideoDataOutput class]]) { [self addSamplebuffer:sampleBuffer withWriterInput:(AVAssetWriterInput *)self.assetWriterInputVideo]; } // Audio else if ([captureOutput isKindOfClass:[AVCaptureAudioDataOutput class]]) { [self addSamplebuffer:sampleBuffer withWriterInput:(AVAssetWriterInput *)self.assetWriterInputAudio]; } ! } ! self.recordStartTime = currentTime; } AVCaptureVideoDataOutputSampleBufferDelegate AVCaptureAudioDataOutputSampleBufferDelegate
8SJUJOH
εΫϦʔϯΛλον ͨ͠ΒಈըΛอଘ։ ࢝ͯ͠εΫϦʔϯ͔ ΒΕͨΒอଘऴྃ
εΫϦʔϯΛλον ͨ͠ΒಈըΛอଘ։ ࢝ͯ͠εΫϦʔϯ͔ ΒΕͨΒอଘऴྃ - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event; -
(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
"7"TTFU8SJUFS "7"TTFU8SJUFS*OQVU
4UBSU8SJUJOH อଘରͷϑΝΠϧΛࢦఆͯ͠ॳظԽ ϝσΟΞλΠϓΛࢦఆ TFU&YQFDUT.FEJB%BUB*O3FBM5JNFΛ0/ʹ͢Δ "7"TTFU8SJUFSʹ"7"TTFU8SJUFS*OQVUΛΈࠐΉ ॻ͖ࠐΈ։࢝
4UBSU8SJUJOH // AVAssetWriter self.assetWriter = [AVAssetWriter assetWriterWithURL:self.outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; !
! // movie NSDictionary *videoSetting = self.videoSettings; self.assetWriterInputVideo = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSetting]; [self.assetWriterInputVideo setExpectsMediaDataInRealTime:YES]; ! ! // audio NSDictionary *audioSetting = self.audioSettings; self.assetWriterInputAudio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioSetting]; [self.assetWriterInputAudio setExpectsMediaDataInRealTime:YES]; ! ! [self.assetWriter addInput:self.assetWriterInputVideo]; [self.assetWriter addInput:self.assetWriterInputAudio]; ! // queue self.movieWritingQueue = dispatch_queue_create("Movie Writing Queue", DISPATCH_QUEUE_SERIAL); ! // Record [self.assetWriter startWriting]; [self.assetWriter startSessionAtSourceTime:self.recordStartTime];
4UBSU8SJUJOH // AVAssetWriter self.assetWriter = [AVAssetWriter assetWriterWithURL:self.outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; !
! // movie NSDictionary *videoSetting = self.videoSettings; self.assetWriterInputVideo = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSetting]; [self.assetWriterInputVideo setExpectsMediaDataInRealTime:YES]; ! ! // audio NSDictionary *audioSetting = self.audioSettings; self.assetWriterInputAudio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioSetting]; [self.assetWriterInputAudio setExpectsMediaDataInRealTime:YES]; ! ! [self.assetWriter addInput:self.assetWriterInputVideo]; [self.assetWriter addInput:self.assetWriterInputAudio]; ! // queue self.movieWritingQueue = dispatch_queue_create("Movie Writing Queue", DISPATCH_QUEUE_SERIAL); ! // Record [self.assetWriter startWriting]; [self.assetWriter startSessionAtSourceTime:self.recordStartTime];
4UBSU8SJUJOH // AVAssetWriter self.assetWriter = [AVAssetWriter assetWriterWithURL:self.outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; !
! // movie NSDictionary *videoSetting = self.videoSettings; self.assetWriterInputVideo = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSetting]; [self.assetWriterInputVideo setExpectsMediaDataInRealTime:YES]; ! ! // audio NSDictionary *audioSetting = self.audioSettings; self.assetWriterInputAudio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioSetting]; [self.assetWriterInputAudio setExpectsMediaDataInRealTime:YES]; ! ! [self.assetWriter addInput:self.assetWriterInputVideo]; [self.assetWriter addInput:self.assetWriterInputAudio]; ! // queue self.movieWritingQueue = dispatch_queue_create("Movie Writing Queue", DISPATCH_QUEUE_SERIAL); ! // Record [self.assetWriter startWriting]; [self.assetWriter startSessionAtSourceTime:self.recordStartTime];
4UBSU8SJUJOH // AVAssetWriter self.assetWriter = [AVAssetWriter assetWriterWithURL:self.outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; !
! // movie NSDictionary *videoSetting = self.videoSettings; self.assetWriterInputVideo = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSetting]; [self.assetWriterInputVideo setExpectsMediaDataInRealTime:YES]; ! ! // audio NSDictionary *audioSetting = self.audioSettings; self.assetWriterInputAudio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioSetting]; [self.assetWriterInputAudio setExpectsMediaDataInRealTime:YES]; ! ! [self.assetWriter addInput:self.assetWriterInputVideo]; [self.assetWriter addInput:self.assetWriterInputAudio]; ! // queue self.movieWritingQueue = dispatch_queue_create("Movie Writing Queue", DISPATCH_QUEUE_SERIAL); ! // Record [self.assetWriter startWriting]; [self.assetWriter startSessionAtSourceTime:self.recordStartTime];
4UBSU8SJUJOH // AVAssetWriter self.assetWriter = [AVAssetWriter assetWriterWithURL:self.outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; !
! // movie NSDictionary *videoSetting = self.videoSettings; self.assetWriterInputVideo = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSetting]; [self.assetWriterInputVideo setExpectsMediaDataInRealTime:YES]; ! ! // audio NSDictionary *audioSetting = self.audioSettings; self.assetWriterInputAudio = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeAudio outputSettings:audioSetting]; [self.assetWriterInputAudio setExpectsMediaDataInRealTime:YES]; ! ! [self.assetWriter addInput:self.assetWriterInputVideo]; [self.assetWriter addInput:self.assetWriterInputAudio]; ! // queue self.movieWritingQueue = dispatch_queue_create("Movie Writing Queue", DISPATCH_QUEUE_SERIAL); ! // Record [self.assetWriter startWriting]; [self.assetWriter startSessionAtSourceTime:self.recordStartTime];
4UBSU8SJUJOH - (void)addSamplebuffer:(CMSampleBufferRef)sampleBuffer withWriterInput:(AVAssetWriterInput *)assetWriterInput { CMFormatDescriptionRef formatDescription = CMSampleBufferGetFormatDescription(sampleBuffer);
! CFRetain(sampleBuffer); CFRetain(formatDescription); dispatch_async(self.movieWritingQueue, ^{ ! if (_assetWriter.status == AVAssetWriterStatusWriting) { ! if (assetWriterInput.readyForMoreMediaData) { ! [assetWriterInput appendSampleBuffer:sampleBuffer]; ! } } ! CFRelease(sampleBuffer); CFRelease(formatDescription); }); }
$.4BNQMF#VGGFS3FG
$.4BNQMF#VGGFS3FG ɾ͋ΔϝσΟΞλΠϓͷαϯϓϧؚ͕·Εͨ$PSF'PVEBUJPO0CKFDUT ɹɾѹॖPSൺѹॖ ɾαϯϓϧ ɾશମͷத͔ΒऔΓग़ͨ͠Ұ෦ͷԿ͔
'JOJTI8SJUJOH ऴྃॲཧ ϑΝΠϧʹอଘ
'JOJTI8SJUJOH [self.assetWriterInputVideo markAsFinished]; [self.assetWriterInputAudio markAsFinished]; [self.assetWriter endSessionAtSourceTime:self.recordStartTime]; [self.assetWriter finishWritingWithCompletionHandler:^{ NSLog(@"self.assetWriter
finishWritingWithCompletionHandler"); [self.movieURLs addObject:self.outputURL]; NSLog(@"%@", self.movieURLs); }];
'JOJTI8SJUJOH [self.assetWriterInputVideo markAsFinished]; [self.assetWriterInputAudio markAsFinished]; [self.assetWriter endSessionAtSourceTime:self.recordStartTime]; [self.assetWriter finishWritingWithCompletionHandler:^{ NSLog(@"self.assetWriter
finishWritingWithCompletionHandler"); [self.movieURLs addObject:self.outputURL]; NSLog(@"%@", self.movieURLs); }];
͍͍ײ͡ʹग़དྷ্͕ͬͨ ͷͰެ։͠·ͨ͠ɻ
/,+.VMUJ.PWJF$BQUVSF7JFX IUUQTHJUIVCDPNOBLBKJKBQBO/,+.VMUJ.PWJF$BQUVSF7JFX
൚༻ੑ͕·ͩΓͳ͍ͷ Ͱʑॗʑͱվળͤͯ͞ ͍͖ͨͩ·͢ɻɻɻɻɻ
ࠂ͍ͤͯͩ͘͞͞
DPNNJOHTPPO
5IBOLT