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
11
3.7k
Markdownをリアルタイムに解析する
nakajijapan
5
4.4k
Firebase Authorization
nakajijapan
0
270
Intoducing Izumo
nakajijapan
1
1.9k
Practical CloudKit
nakajijapan
1
1.8k
Introducing to Ajimi - プロダクトを味見していこう
nakajijapan
0
2.2k
Shari
nakajijapan
1
2.8k
Japan Apple Pay Development
nakajijapan
0
280
業務で絶対必要にならない技術
nakajijapan
0
840
Other Decks in Technology
See All in Technology
プラットフォーム転換期におけるGitHub Copilot活用〜Coding agentがそれを加速するか〜 / Leveraging GitHub Copilot During Platform Transition Periods
aeonpeople
1
220
なぜスクラムはこうなったのか?歴史が教えてくれたこと/Shall we explore the roots of Scrum
sanogemaru
5
1.7k
Modern Linux
oracle4engineer
PRO
0
160
COVESA VSSによる車両データモデルの標準化とAWS IoT FleetWiseの活用
osawa
1
380
[ JAWS-UG 東京 CommunityBuilders Night #2 ]SlackとAmazon Q Developerで 運用効率化を模索する
sh_fk2
3
460
ブロックテーマ時代における、テーマの CSS について考える Toro_Unit / 2025.09.13 @ Shinshu WordPress Meetup
torounit
0
130
AWSを利用する上で知っておきたい名前解決のはなし(10分版)
nagisa53
10
3.2k
会社紹介資料 / Sansan Company Profile
sansan33
PRO
6
380k
Evolución del razonamiento matemático de GPT-4.1 a GPT-5 - Data Aventura Summit 2025 & VSCode DevDays
lauchacarro
0
210
「何となくテストする」を卒業するためにプロダクトが動く仕組みを理解しよう
kawabeaver
0
430
5分でカオスエンジニアリングを分かった気になろう
pandayumi
0
260
「どこから読む?」コードとカルチャーに最速で馴染むための実践ガイド
zozotech
PRO
0
550
Featured
See All Featured
Building Applications with DynamoDB
mza
96
6.6k
Into the Great Unknown - MozCon
thekraken
40
2k
Measuring & Analyzing Core Web Vitals
bluesmoon
9
580
Git: the NoSQL Database
bkeepers
PRO
431
66k
Embracing the Ebb and Flow
colly
87
4.8k
The Language of Interfaces
destraynor
161
25k
Mobile First: as difficult as doing things right
swwweet
224
9.9k
Bash Introduction
62gerente
615
210k
Visualization
eitanlees
148
16k
Building a Modern Day E-commerce SEO Strategy
aleyda
43
7.6k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
GraphQLとの向き合い方2022年版
quramy
49
14k
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