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<!DOCTYPE html> |
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<html lang="de"> |
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<head> |
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<meta charset="UTF-8" /> |
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<meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
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<title>Sport Video App</title> |
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<link rel="manifest" href="/manifest.json" /> |
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<link rel="stylesheet" href="/css/styles.css" /> |
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</head> |
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<body> |
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<div id="root"></div> |
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<script> |
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if ('serviceWorker' in navigator) { |
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window.addEventListener('load', () => { |
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navigator.serviceWorker.register('/service-worker.js') |
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.then(registration => { |
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console.log('Service Worker registriert mit Scope:', registration.scope); |
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}) |
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.catch(error => { |
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console.error('Service Worker Registrierung fehlgeschlagen:', error); |
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}); |
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}); |
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} |
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</script> |
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</body> |
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</html> |
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{ |
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"short_name": "SportVideo", |
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"name": "Sport Video App", |
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"start_url": "/index.html", |
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"display": "standalone", |
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"background_color": "#ffffff", |
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"theme_color": "#000000", |
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"icons": [ |
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{ |
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"src": "/icons/icon-192x192.png", |
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"type": "image/png", |
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"sizes": "192x192" |
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}, |
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{ |
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"src": "/icons/icon-512x512.png", |
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"type": "image/png", |
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"sizes": "512x512" |
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} |
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] |
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} |
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const CACHE_NAME = 'sport-video-app-cache-v1'; |
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const urlsToCache = [ |
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'/', |
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'/index.html', |
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'/css/styles.css', |
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'/js/main.js', |
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'/icons/icon-192x192.png', |
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'/icons/icon-512x512.png' |
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]; |
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self.addEventListener('install', event => { |
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event.waitUntil( |
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caches.open(CACHE_NAME).then(cache => cache.addAll(urlsToCache)) |
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); |
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}); |
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|
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self.addEventListener('fetch', event => { |
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event.respondWith( |
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caches.match(event.request) |
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.then(response => response || fetch(event.request)) |
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); |
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}); |
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import React, { createContext, useContext, useState, useEffect } from 'react'; |
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import { createFFmpeg } from '@ffmpeg/ffmpeg'; |
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const FFmpegContext = createContext(); |
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export const useFFmpeg = () => useContext(FFmpegContext); |
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export const FFmpegProvider = ({ children }) => { |
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const [ffmpeg] = useState(() => createFFmpeg({ log: true })); |
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const [isLoaded, setIsLoaded] = useState(false); |
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const [error, setError] = useState(null); |
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|
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useEffect(() => { |
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const loadFFmpeg = async () => { |
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try { |
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await ffmpeg.load(); |
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setIsLoaded(true); |
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} catch (err) { |
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setError(err); |
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} |
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}; |
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loadFFmpeg(); |
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}, [ffmpeg]); |
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return ( |
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<FFmpegContext.Provider value={{ ffmpeg, isLoaded, error }}> |
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{children} |
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</FFmpegContext.Provider> |
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); |
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}; |
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import React, { createContext, useContext, useState } from 'react'; |
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const VideoContext = createContext(); |
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export const useVideo = () => useContext(VideoContext); |
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export const VideoProvider = ({ children }) => { |
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const [videos, setVideos] = useState([]); |
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const addVideo = (video) => { |
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setVideos(prevVideos => [...prevVideos, video]); |
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}; |
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return ( |
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<VideoContext.Provider value={{ videos, addVideo }}> |
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{children} |
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</VideoContext.Provider> |
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); |
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}; |
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import React, { useState, useRef } from 'react'; |
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import { useFFmpeg } from '../context/FFmpegContext'; |
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import { useVideo } from '../context/VideoContext'; |
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import { toast } from 'react-toastify'; |
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import { CircularProgress } from '@mui/material'; |
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const VideoEditor = () => { |
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const { ffmpeg, isLoaded, error } = useFFmpeg(); |
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const { addVideo } = useVideo(); |
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const [videoFile, setVideoFile] = useState(null); |
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const [processing, setProcessing] = useState(false); |
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const [progress, setProgress] = useState(0); |
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const videoRef = useRef(); |
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const handleFileUpload = async (e) => { |
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const file = e.target.files[0]; |
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if (!file) return; |
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if (!file.type.startsWith('video/')) { |
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toast.error('Nur Videoformate erlaubt (MP4, WebM, MOV)'); |
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return; |
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} |
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if (file.size > process.env.REACT_APP_MAX_FILE_SIZE) { |
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toast.error('Maximale Dateigröße: 100MB'); |
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return; |
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} |
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try { |
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setVideoFile(URL.createObjectURL(file)); |
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} catch (err) { |
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toast.error('Fehler beim Verarbeiten der Datei'); |
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} |
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}; |
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const trimVideo = async () => { |
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if (!videoFile) { |
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toast.error('Kein Video ausgewählt'); |
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return; |
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} |
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setProcessing(true); |
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try { |
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const inputName = 'input.mp4'; |
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const outputName = 'output.mp4'; |
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const response = await fetch(videoFile); |
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const buffer = await response.arrayBuffer(); |
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ffmpeg.FS('writeFile', inputName, new Uint8Array(buffer)); |
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ffmpeg.setProgress(({ ratio }) => setProgress(ratio)); |
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await ffmpeg.run('-i', inputName, '-ss', '00:00:02', '-t', '5', outputName); |
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const data = ffmpeg.FS('readFile', outputName); |
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const trimmedVideoURL = URL.createObjectURL( |
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new Blob([data.buffer], { type: 'video/mp4' }) |
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); |
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addVideo(trimmedVideoURL); |
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toast.success('Video erfolgreich getrimmt'); |
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} catch (err) { |
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console.error(err); |
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toast.error('Fehler beim Trimmen des Videos'); |
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} finally { |
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setProcessing(false); |
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} |
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}; |
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return ( |
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<div> |
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<h2>Sport Video Editor</h2> |
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<input type="file" accept="video/*" onChange={handleFileUpload} /> |
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{videoFile && <video ref={videoRef} src={videoFile} controls width="400" />} |
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{processing && <CircularProgress variant="determinate" value={progress * 100} />} |
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<button disabled={!isLoaded || processing} onClick={trimVideo}> |
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Video trimmen |
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</button> |
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{error && <p>FFmpeg Error: {error.message}</p>} |
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</div> |
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); |
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}; |
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export default VideoEditor; |
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cd sport-video-app |
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npx create-react-app sport-video-app |
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node -v |
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npm -v |
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npm install |
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npm start |
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const CACHE_NAME = 'sport-video-app-cache-v1'; |
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const urlsToCache = [ |
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'/', |
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'/index.html', |
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'/css/styles.css', |
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'/js/main.js', |
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'/icons/icon-192x192.png', |
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'/icons/icon-512x512.png' |
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]; |
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|
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self.addEventListener('install', event => { |
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event.waitUntil( |
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caches.open(CACHE_NAME).then(cache => cache.addAll(urlsToCache)) |
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); |
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}); |
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|
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self.addEventListener('fetch', event => { |
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event.respondWith( |
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caches.match(event.request) |
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.then(response => response || fetch(event.request)) |
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); |
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}); |
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VideoEditor.jsxsport-video-app/ |
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├── public/ |
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│ ├── index.html |
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│ ├── manifest.json |
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│ ├── service-worker.js |
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│ └── icons/ |
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│ ├── icon-192x192.png |
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│ └── icon-512x512.png |
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├── src/ |
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│ ├── components/ |
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│ │ └── VideoEditor.jsx |
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│ ├── context/ |
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│ │ ├── FFmpegContext.jsx |
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│ │ └── VideoContext.jsx |
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│ ├── App.jsx |
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│ └── index.js |
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├── .env |
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├── package.json |
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└── README.md |
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