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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
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Sur d’autres sites (8566)
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JAVA Spring : Grabbing Image from a multipartFile video via FFMPEG JavaCV
29 août 2023, par Thanh Hiếu NguyễnI'm trying to achieve Grabbing a frame from a MultipartFile or URL and here's my attempt.


URL :


InputStream inputStream = new java.net.URL(video.getUrl()).openStream();

FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(inputStream);
grabber.start();

int frameRate = (int) grabber.getFrameRate();
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
Frame frame = grabber.grab();

grabber.stop();

if (frame != null) {
 Java2DFrameConverter converter = new Java2DFrameConverter();
 BufferedImage bufferedImage = converter.getBufferedImage(frame);
 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
 ImageIO.write(bufferedImage, "jpeg", byteArrayOutputStream);
 byte[] bytes = byteArrayOutputStream.toByteArray();


MultipartFile :


byte[] videoBytes = video.getBytes();

FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new ByteArrayInputStream(videoBytes));
int frameRate = (int) 30;
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
grabber.setVideoStream(10);
grabber.start();


Frame frame = grabber.grab();

grabber.stop();

if (frame != null) {
 Java2DFrameConverter converter = new Java2DFrameConverter();
 BufferedImage bufferedImage = converter.getBufferedImage(frame);
 ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
 ImageIO.write(bufferedImage, "jpeg", byteArrayOutputStream);
 byte[] bytes = byteArrayOutputStream.toByteArray();


Both of them generates an AUDIO type of Frame, so later I can't buffer an image out of it, tried different videos, frameRate, frameNumber, same result.


UPDATE :

So I manage to get the frame with following code

byte[] videoBytes = video.getBytes();
FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new ByteArrayInputStream(videoBytes));
grabber.setFormat("mp4");
int frameRate = (int) grabber.getFrameRate();
int targetFrameNumber = (int) (frameRate * timeLengthSeconds);

grabber.setFrameNumber(targetFrameNumber);
grabber.setVideoStream(0);
grabber.start();


Frame frame = grabber.grabImage();

grabber.stop();


But another problem occurred


A fatal error has been detected by the Java Runtime Environment:

EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000001dd6cac79d6, pid=20824, tid=21048 
 JRE version: Java(TM) SE Runtime Environment 18.9 (11.0.12+8) (build 11.0.12+8-LTS-237)
 Java VM: Java HotSpot(TM) 64-Bit Server VM 18.9 (11.0.12+8-LTS-237, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
 Problematic frame:
 J 657 c1 jdk.internal.misc.Unsafe.getByte(J)B java.base@11.0.12 (7 bytes) @ 0x000001dd6cac79d6 [0x000001dd6cac79a0+0x0000000000000036]


Any help is appreciated !


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Process vide files to take screen grabs in java spring boot
10 octobre 2023, par Haleema KhanI am using JavaCV library with ffmpeg bindings to process video files and taking screen grabs at specific frames.
Adding JavaCV library dependency to my spring project increases the size of my jar file from around 90Mb > 1+ Gb.
This is a big issue becuase my project is deployed on AWS elastic beanstalk that accepts a max size of 500 Mb for a jar file.


Need help to resolve this issue with the jar file or else any other alternate library that could do this.


What I tried : I have removed all accept the abosultely necessary dependencies in my project to reduce the jar size.
I have also tried to find alternate solutions but couldnt get anything.
My pom file looks like


<dependencies>
 
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-data-jpa</artifactid>
 </dependency>
 <dependency>
 <groupid>com.google.oauth-client</groupid>
 <artifactid>google-oauth-client</artifactid>
 <version>1.32.1</version>
 </dependency>
 <dependency>
 <groupid>com.google.http-client</groupid>
 <artifactid>google-http-client</artifactid>
 <version>1.32.1</version>
 </dependency>
 
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-oauth2-client</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-web</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-test</artifactid>
 <scope>test</scope>
 </dependency>
 
 <dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>javacv</artifactid>
 <version>1.5.9</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-validation</artifactid>
 </dependency>
 <dependency>
 <groupid>org.apache.commons</groupid>
 <artifactid>commons-csv</artifactid>
 <version>1.10.0</version>
 </dependency>
 <dependency>
 <groupid>io.jsonwebtoken</groupid>
 <artifactid>jjwt</artifactid>
 <version>0.9.1</version>
 </dependency>
 
 <dependency>
 <groupid>mysql</groupid>
 <artifactid>mysql-connector-java</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-devtools</artifactid>
 </dependency>
 <dependency>
 <groupid>org.projectlombok</groupid>
 <artifactid>lombok</artifactid>
 </dependency>
 <dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-configuration-processor</artifactid>
 <optional>true</optional>
 </dependency>
 <dependency>
 <groupid>com.amazonaws</groupid>
 <artifactid>aws-java-sdk-s3</artifactid>
 <version>1.12.550</version>
 </dependency>
 
 <dependency>
 <groupid>commons-io</groupid>
 <artifactid>commons-io</artifactid>
 <version>2.6</version>
 </dependency>
 
 
 
 <dependency>
 <groupid>com.github.ozlerhakan</groupid>
 <artifactid>poiji</artifactid>
 <version>3.0.3</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.cloud</groupid>
 <artifactid>spring-cloud-starter-aws</artifactid>
 <version>2.2.6.RELEASE</version>
 </dependency>
 <dependency>
 <groupid>org.springframework.cloud</groupid>
 <artifactid>spring-cloud-starter-aws-messaging</artifactid>
 <version>2.2.6.RELEASE</version>
 </dependency>
 </dependencies>```


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why am i getting this error when using FFmpeg in a spring boot app on a mac intel device : SIGSEGV (0xb) at pc=0x000000013d71b0e0, pid=49777, tid=42755
19 juillet 2024, par Godwill ChristopherI am working with FFmpeg library in spring boot app to stream live recording from an ip camera via RSTP and save to S3 bucket but i am running into the error below.


A fatal error has been detected by the Java Runtime Environment :


SIGSEGV (0xb) at pc=0x000000013d71b0e0, pid=49777, tid=42755


JRE version : OpenJDK Runtime Environment Corretto-19.0.2.7.1 (19.0.2+7) (build 19.0.2+7-FR)
Java VM : OpenJDK 64-Bit Server VM Corretto-19.0.2.7.1 (19.0.2+7-FR, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, bsd-amd64)
Problematic frame :
C [libavutil.56.dylib+0xa0e0] av_strstart+0x10


No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
An error report file with more information is saved as :
/Users/CODA/Desktop/videoSaleService/hs_err_pid49777.log


If you would like to submit a bug report, please visit :
https://github.com/corretto/corretto-19/issues/
The crash happened outside the Java Virtual Machine in native code.
See problematic frame for where to report the bug.


Process finished with exit code 134 (interrupted by signal 6:SIGABRT)


public static void main(String[] args) {
 OkHttpClient client = new OkHttpClient();
 try (S3Client s3Client = S3Client.create()) {
 VideoService videoService = new VideoService(new VideoRepositoryImpl(),
 new S3Service(s3Client), new VideoExtractor(client), new ISApiClient());
 videoService.streamLiveVideoRSTP(System.out);
 } catch (IOException e) {
 log.error("Error occurred while streaming live video: {}", e.getMessage(), e);
 } catch (Exception e) {
 log.error("Unexpected error occurred: {}", e.getMessage(), e);
 }
}

public void streamLiveVideoRSTP(OutputStream outputStream) throws IOException {
 File tempFile = File.createTempFile("live_stream", ".mp4");

 try (InputStream inputStream = client.getLiveStreamingVideoRSTP();
 OutputStream fileOutputStream = new FileOutputStream(tempFile)) {
 byte[] buffer = new byte[4096];
 int bytesRead;
 while ((bytesRead = inputStream.read(buffer)) != -1) {
 outputStream.write(buffer, 0, bytesRead);
 fileOutputStream.write(buffer, 0, bytesRead);
 }
 } catch (Exception e) {
 log.error("Error occurred while streaming live video: {}", e.getMessage(), e);
 throw new IOException("Error occurred while streaming live video", e);
 }

 // Upload the captured video file to S3
 try {
 uploadStreamedVideoToS3(tempFile);
 } finally {
 if (tempFile.exists()) {
 if (!tempFile.delete()) {
 log.warn("Failed to delete temporary file: {}", tempFile.getAbsolutePath());
 }
 }
 }
}

private final BlockingQueue frameQueue = new ArrayBlockingQueue<>(10);

public ISApiClient() {
 new Thread(this::startGrabbingFrames).start();
}

public InputStream getLiveStreamingVideoRSTP() {
 return new InputStream() {
 private ByteArrayInputStream currentStream;

 @Override
 public int read() {
 if (currentStream == null || currentStream.available() == 0) {
 byte[] frame = frameQueue.poll();
 if (frame != null) {
 currentStream = new ByteArrayInputStream(frame);
 } else {
 return -1;
 }
 }
 return currentStream.read();
 }
 };
}

private void startGrabbingFrames() {
 try (FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(rtspUrl)) {
 frameGrabber.setOption("rtsp_transport", "tcp");
 frameGrabber.start();

 FFmpegFrameFilter frameFilter = new FFmpegFrameFilter("format=yuv420p",
 frameGrabber.getImageWidth(), frameGrabber.getImageHeight());
 frameFilter.setPixelFormat(frameGrabber.getPixelFormat());
 frameFilter.start();

 log.info("Started grabbing frames from RTSP stream.");

 while (true) {
 Frame frame = frameGrabber.grab();
 if (frame != null && frame.image != null) {
 log.info("Frame grabbed: width={} height={} timestamp={}",
 frame.imageWidth, frame.imageHeight, frame.timestamp);
 frameFilter.push(frame);
 Frame filteredFrame = frameFilter.pull();

 if (filteredFrame != null && filteredFrame.image != null) {
 log.info("Frame filtered: width={} height={} timestamp={}",
 filteredFrame.imageWidth, filteredFrame.imageHeight, filteredFrame.timestamp);
 byte[] imageBytes = convertFrameToBytes(filteredFrame);
 if (imageBytes.length > 0) {
 frameQueue.offer(imageBytes);
 log.info("Frame added to queue, queue size={}", frameQueue.size());
 }
 }
 }
 }
 } catch (IOException e) {
 log.error("Error grabbing frames: {}", e.getMessage(), e);
 }
}

private byte[] convertFrameToBytes(Frame frame) {
 if (frame == null || frame.image == null) {
 return new byte[0];
 }

 ByteBuffer byteBuffer = null;
 for (Object img : frame.image) {
 if (img instanceof ByteBuffer) {
 byteBuffer = (ByteBuffer) img;
 break;
 }
 }

 if (byteBuffer == null) {
 return new byte[0];
 }

 byte[] bytes = new byte[byteBuffer.remaining()];
 byteBuffer.get(bytes);
 return bytes;
}


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