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Autres articles (36)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
MediaSPIP Player : les contrôles
26 mai 2010, parLes contrôles à la souris du lecteur
En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (6261)
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Can't fix this ffmpeg, NoClassDefFoundError org.bytedeco.ffmpeg.global.avutil
16 mars 2023, par noob234I am trying to get the video duration with this library
import org.bytedeco.javacv.FFmpegFrameGrabber;

When I upload this mp4 video (https://sample-videos.com/video123/mp4/720/big_buck_bunny_720p_1mb.mp4), I get this error message :

java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.ffmpeg.global.avutil

It will break when trying to get the 'grabber' :


private void videoInfo(MultipartFile file) {
 try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(file.getInputStream())) { // on this line it will break :(
 grabber.start();
 long durationMs = grabber.getLengthInTime();
 } catch (FrameGrabber.Exception e) {
 throw new RuntimeException(e);
 } catch (IOException e) {
 throw new RuntimeException(e);
 }
}


This is my build.gradle :


plugins {
 id 'java'
 id 'org.springframework.boot' version '2.7.9'
 id 'io.spring.dependency-management' version '1.0.15.RELEASE'
}

group = 'com.nob234'
version = '0.0.1-SNAPSHOT'

configurations {
 compileOnly {
 extendsFrom annotationProcessor
 }
}

repositories {
 mavenCentral()
}

dependencies {
 implementation 'org.springframework.boot:spring-boot-starter-web'
 compileOnly 'org.projectlombok:lombok'
 annotationProcessor 'org.projectlombok:lombok'
 testImplementation 'org.springframework.boot:spring-boot-starter-test'
 implementation 'org.springdoc:springdoc-openapi-ui:1.6.9'
 implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 runtimeOnly 'org.postgresql:postgresql'
 // for logging
 implementation 'org.slf4j:slf4j-api:1.7.30'
 implementation 'org.slf4j:jcl-over-slf4j:1.7.30'
 implementation 'org.slf4j:log4j-over-slf4j:1.7.30'
 implementation 'ch.qos.logback:logback-classic:1.2.3'
 implementation 'org.bytedeco:javacv:1.5.8'
}

tasks.named('test') {
 useJUnitPlatform()
}


This is my ffmpeg version :


ffmpeg version 6.0-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100


Please keep in mind that I use Java 8 in this project and I hope this issue is reproducible. If you want more info please leave a comment.


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HLS video not playing in Angular using Hls.js
5 avril 2023, par Jose A. MataránI am trying to play an HLS video using Hls.js in an Angular component. Here is the component code :


import { Component, ElementRef, ViewChild, AfterViewInit } from '@angular/core';
import Hls from 'hls.js';

@Component({
 selector: 'app-ver-recurso',
 templateUrl: './ver-recurso.component.html',
 styleUrls: ['./ver-recurso.component.css']
})
export class VerRecursoComponent implements AfterViewInit {
 @ViewChild('videoPlayer') videoPlayer!: ElementRef<htmlvideoelement>;
 hls!: Hls;

 ngAfterViewInit(): void {
 this.hls = new Hls();

 const video = this.videoPlayer.nativeElement;
 const watermarkText = 'MARCA_DE_AGUA';

 this.hls.on(Hls.Events.MEDIA_ATTACHED, () => {
 this.hls.loadSource(`http://localhost:8080/video/playlist.m3u8?watermarkText=${encodeURIComponent(watermarkText)}`);
 });

 this.hls.attachMedia(video);
 }

 loadVideo() {
 const watermarkText = 'Marca de agua personalizada';
 const video = this.videoPlayer.nativeElement;
 const hlsBaseUrl = 'http://localhost:8080/video';

 if (Hls.isSupported()) {
 this.hls.loadSource(`${hlsBaseUrl}/playlist.m3u8?watermarkText=${encodeURIComponent(watermarkText)}`);
 this.hls.attachMedia(video);
 this.hls.on(Hls.Events.MANIFEST_PARSED, () => {
 video.play();
 });
 } else if (video.canPlayType('application/vnd.apple.mpegurl')) {
 video.src = `${hlsBaseUrl}/playlist.m3u8?watermarkText=${encodeURIComponent(watermarkText)}`;
 video.addEventListener('loadedmetadata', () => {
 video.play();
 });
 }
 }
}
</htmlvideoelement>

I'm not sure what's going wrong, as the requests to the playlist and the segments seem to be working correctly, but the video never plays. Is there anything obvious that I'm missing here ?


On the backend side, I have a Spring Boot application that generates and returns the playlist file, as you can see.


@RestController
public class VideoController {
 @Autowired
 private VideoService videoService;

 @GetMapping("/video/{segmentFilename}")
 public ResponseEntity<resource> getHlsVideoSegment(@PathVariable String segmentFilename, @RequestParam String watermarkText) {
 String inputVideoPath = "/Users/jose/PROYECTOS/VARIOS/oposhield/oposhield-back/repo/202204M-20230111.mp4";
 String hlsOutputPath = "/Users/jose/PROYECTOS/VARIOS/oposhield/oposhield-back/repo/temporal";
 String segmentPath = Paths.get(hlsOutputPath, segmentFilename).toString();

 if (!Files.exists(Paths.get(hlsOutputPath, "playlist.m3u8"))) {
 videoService.generateHlsStream(inputVideoPath, watermarkText, hlsOutputPath);
 }

 // Espera a que esté disponible el segmento de video necesario.
 while (!Files.exists(Paths.get(segmentPath))) {
 try {
 Thread.sleep(1000);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 }

 Resource resource;
 try {
 resource = new UrlResource(Paths.get(segmentPath).toUri());
 } catch (Exception e) {
 return ResponseEntity.badRequest().build();
 }

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType("application/vnd.apple.mpegurl"))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + resource.getFilename() + "\"")
 .body(resource);
 }

 @GetMapping("/video/{segmentFilename}.ts")
 public ResponseEntity<resource> getHlsVideoTsSegment(@PathVariable String segmentFilename) {
 String hlsOutputPath = "/Users/jose/PROYECTOS/VARIOS/oposhield/oposhield-back/repo/temporal";
 String segmentPath = Paths.get(hlsOutputPath, segmentFilename + ".ts").toString();

 // Espera a que esté disponible el segmento de video necesario.
 while (!Files.exists(Paths.get(segmentPath))) {
 try {
 Thread.sleep(1000);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 }

 Resource resource;
 try {
 resource = new UrlResource(Paths.get(segmentPath).toUri());
 } catch (Exception e) {
 return ResponseEntity.badRequest().build();
 }

 return ResponseEntity.ok()
 .contentType(MediaType.parseMediaType("video/mp2t"))
 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + resource.getFilename() + "\"")
 .body(resource);
 }
</resource></resource>

package dev.mataran.oposhieldback.service;


import org.springframework.stereotype.Service;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

@Service
public class VideoService {
 private Process process;
 private ExecutorService executorService = Executors.newSingleThreadExecutor();

 public void generateHlsStream(String inputVideoPath, String watermarkText, String outputPath) {
 Runnable task = () -> {
 try {
 if (process != null) {
 process.destroy();
 }

 String hlsOutputFile = outputPath + "/playlist.m3u8";
 String command = String.format("ffmpeg -i %s -vf drawtext=text='%s':x=10:y=10:fontsize=24:fontcolor=white -codec:v libx264 -crf 21 -preset veryfast -g 50 -sc_threshold 0 -map 0 -flags -global_header -hls_time 4 -hls_list_size 0 -hls_flags delete_segments+append_list -f hls %s", inputVideoPath, watermarkText, hlsOutputFile);
 process = Runtime.getRuntime().exec(command);
 BufferedReader reader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
 String line;
 while ((line = reader.readLine()) != null) {
 System.out.println(line);
 }
 } catch (Exception e) {
 e.printStackTrace();
 }
 };
 executorService.submit(task);
 }
}


-
Frames from Video Using OpenCV in Ubuntu with Java 17
2 août 2023, par bstrdnI've been trying to extract frames from a video using OpenCV in an Ubuntu environment with Java 17, but all my attempts have been unsuccessful so far. The main issue is that ffmpeg is not detected by the OpenCV library on ubuntu.


Here's my test code :


Main class


import org.opencv.core.Core;
import org.opencv.videoio.VideoCapture;

public class Main {
 public static String videoPath = "";
 static {
 String osName = System.getProperty("os.name").toLowerCase();
 if (osName.contains("win")) {
 System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
 videoPath = ClassLoader.getSystemResource("video.mp4").getPath();
 } else {
 videoPath = "/video.mp4";
// System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
 System.load("/usr/lib/opencv_java470.so");
 }
 }

 public static void main(String[] args) throws InterruptedException {
 VideoCapture videoCapture = new VideoCapture(videoPath);
 if (!videoCapture.isOpened()) {
 System.out.println("Error opening video file.");
 } else {
 System.out.println("Everything is fine.");
 }
 System.out.println(Core.getBuildInformation());
 Thread.sleep(1000000000000000000L);
 }
}


Maven :


<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
 <modelversion>4.0.0</modelversion>
 <parent>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-parent</artifactid>
 <version>3.0.2</version>
 <relativepath></relativepath> 
 </parent>
 <groupid>org.example</groupid>
 <artifactid>untitled</artifactid>
 <version>1.0-SNAPSHOT</version>
 <properties>
 17
 17
 UTF-8
 </properties>

<dependencies>
<dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>opencv-platform</artifactid>
 <version>4.7.0-1.5.9</version>
</dependency>

<dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-web</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
 <plugin>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-maven-plugin</artifactid>
 </plugin>
</plugins>
</build>
</project>


Dockerfile :


FROM ubuntu:20.04
RUN apt-get update && apt-get install -y openjdk-17-jdk
RUN apt-get update && apt-get install -y pkg-config
RUN apt-get update && apt-get install -y ffmpeg libavformat-dev libavcodec-dev libswscale-dev libavresample-dev
ENV JAVA_HOME /usr/lib/jvm/java-17-openjdk-amd64
COPY target/*.jar /app.jar
COPY src/main/resources/video.mp4 /
COPY opencv_java470.so /usr/lib
ENV JAVA_TOOL_OPTIONS="-Djava.library.path=/usr/lib:/lib:/usr/local/lib:/usr/local:/usr/lib/x86_64-linux-gnu"
ENV LD_LIBRARY_PATH=/usr/lib:/lib:/usr/local/lib:/usr/local:/usr/lib/x86_64-linux-gnu
ENTRYPOINT [ "sh", "-c", "java $JAVA_TOOL_OPTIONS -jar /app.jar" ]


The application displays the following text (video is not opened) :


Error opening video file.

2023-08-02T13:30:58.448538297Z 
2023-08-02T13:30:58.448572597Z General configuration for OpenCV 4.7.0 =====================================
2023-08-02T13:30:58.448587327Z Version control: v4.7.0
2023-08-02T13:30:58.448590607Z 
2023-08-02T13:30:58.448593217Z Platform:
2023-08-02T13:30:58.448596057Z Timestamp: 2023-03-27T23:13:34Z
2023-08-02T13:30:58.448598747Z Host: Linux 5.4.0-1103-azure x86_64
2023-08-02T13:30:58.448601377Z CMake: 3.25.2
2023-08-02T13:30:58.448604277Z CMake generator: Unix Makefiles
2023-08-02T13:30:58.448606837Z CMake build tool: /usr/bin/make
2023-08-02T13:30:58.448609327Z Configuration: RELEASE
2023-08-02T13:30:58.448611867Z 
.......there is a lot of text......
2023-08-02T13:30:58.448772865Z 
2023-08-02T13:30:58.448775355Z Video I/O:
2023-08-02T13:30:58.448777845Z DC1394: NO
2023-08-02T13:30:58.448780535Z FFMPEG: NO
2023-08-02T13:30:58.448783105Z avcodec: NO
2023-08-02T13:30:58.448785725Z avformat: NO
2023-08-02T13:30:58.448788295Z avutil: NO
2023-08-02T13:30:58.448790755Z swscale: NO
2023-08-02T13:30:58.448793295Z avresample: NO
2023-08-02T13:30:58.448795845Z GStreamer: NO
2023-08-02T13:30:58.448798255Z v4l/v4l2: YES (linux/videodev2.h)
2023-08-02T13:30:58.448800885Z 
2023-08-02T13:30:58.448803525Z Parallel framework: pthreads
2023-08-02T13:30:58.448806345Z 
............
2023-08-02T13:30:58.448859654Z Java: export all functions
2023-08-02T13:30:58.448862024Z ant: /usr/bin/ant (ver 1.10.5)
2023-08-02T13:30:58.448864504Z JNI: /opt/hostedtoolcache/jdk/8.0.362/x64/include /opt/hostedtoolcache/jdk/8.0.362/x64/include/linux /opt/hostedtoolcache/jdk/8.0.362/x64/include
2023-08-02T13:30:58.448867224Z Java wrappers: YES
2023-08-02T13:30:58.448869804Z Java tests: NO
2023-08-02T13:30:58.448872314Z 
2023-08-02T13:30:58.448874734Z Install to: /usr/local


Moreover, ffmpeg is installed on Ubuntu.


How can i fix this ? I'm deathly tired(


Thank you in advance for your assistance !


First I tried installation following the official instructions.https://github.com/bytedeco/javacv#required-software


Then the solution provided in https://stackoverflow.com/a/76750478/8087508,


but the result is the same.


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