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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (100)
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Sur d’autres sites (8799)
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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);
 }
}


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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.


-
Can't fix this ffmpeg, NoClassDefFoundError
15 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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