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Autres articles (31)
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Librairies et binaires spécifiques au traitement vidéo et sonore
31 janvier 2010, parLes logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
Binaires complémentaires et facultatifs flvtool2 : (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (4772)
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cannot locate symbol "avpriv_pix_fmt_bps_avi"
14 mars 2017, par S. Le GalloudecI’m developping an android application using ffmpeg. I’m trying to decode a rtsp stream, and i have a problem with a symbol.
After i finally compiled ffmpeg with this tuto :
https://github.com/WritingMinds/ffmpeg-androidI used a code i found here : Receiving RTSP stream using FFMPEG library
But i have a problem when i run my program. I got this error :
java.lang.UnsatisfiedLinkError : dlopen failed : cannot locate symbol "avpriv_pix_fmt_bps_avi" referenced by "/data/app/com.example.local.test_ffmpeg-2/lib/arm/libnative-lib.so"...
The thing is that i checked into my .a to see if i had the symbol so i did :
nm libavcodec.a | grep avpriv_pixIt returned :
00000060 R avpriv_pix_fmt_bps_avi
00000000 R avpriv_pix_fmt_bps_mov
U avpriv_pix_fmt_bps_avi
U avpriv_pix_fmt_bps_movSo it looks like i have the symbol, but the U after means undefined, so i’m really confused. I’m not sure if my compilation failed somewhere or if the problem comes from my program.
I’m using ndk 14, if someone has some ideas, that would be great :)
Best regards
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Is it possible to "stretch" audio in the frequency domain ?
9 juillet 2024, par Christian SchmitzWe would like to make quite similar frequencies better decernible for further AI-analysis. Because of that, we would like to stretch the audio in the frequency domain. This means that instead of having two frequency bands of 30Hz and 40Hz, is it possible to "stretch" them to have maybe 28Hz and 45Hz ?


Thanks a lot and if that wasn't clear enough, please don't hesitate to ask ! :)


We tried cleaning the data with ffmpeg, but it appears that for our task we need a clearer representation of the frequencies in the data


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Error initializing FFmpegKit : "TypeError : Cannot read property 'getLogLevel' of null" in React Native
9 janvier, par Md Monirozzaman khanI'm developing a React Native application where I need to process videos using the ffmpeg-kit-react-native library. However, I'm encountering an issue during the initialization of FFmpegKitConfig. The error message is :


ERROR Error initializing FFmpegKit: [TypeError: Cannot read property 'getLogLevel' of null]


Here is my App.js code




import React, { useState, useEffect } from 'react';
import { StyleSheet, Text, View, TouchableOpacity, Alert, Dimensions, ScrollView, LayoutAnimation, UIManager, Platform } from 'react-native';
import * as ImagePicker from 'expo-image-picker';
import * as FileSystem from 'expo-file-system';
import { Video } from 'expo-av';
import { MaterialIcons } from '@expo/vector-icons';
import { FFmpegKit, FFmpegKitConfig, ReturnCode } from 'ffmpeg-kit-react-native';

const windowWidth = Dimensions.get('window').width;

if (Platform.OS === 'android') {
 UIManager.setLayoutAnimationEnabledExperimental && UIManager.setLayoutAnimationEnabledExperimental(true);
}

export default function App() {
 const [videoFiles, setVideoFiles] = useState([]);
 const [isGridView, setIsGridView] = useState(false);
 const [isConverting, setIsConverting] = useState(false);

 useEffect(() => {
 FFmpegKitConfig.init()
 .then(() => {
 console.log('FFmpegKit initialized');
 })
 .catch((error) => {
 console.error('Error initializing FFmpegKit:', error);
 });
 }, []);

 const pickVideo = async () => {
 const { status } = await ImagePicker.requestMediaLibraryPermissionsAsync();
 if (status !== 'granted') {
 alert('Sorry, we need media library permissions to make this work!');
 return;
 }

 let result = await ImagePicker.launchImageLibraryAsync({
 mediaTypes: ImagePicker.MediaTypeOptions.Videos,
 allowsMultipleSelection: true,
 });

 if (!result.canceled && result.assets.length > 0) {
 const newFiles = result.assets.filter(
 (newFile) => !videoFiles.some((existingFile) => existingFile.uri === newFile.uri)
 );

 if (newFiles.length < result.assets.length) {
 Alert.alert('Duplicate Files', 'Some files were already added.');
 }

 LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
 setVideoFiles([...videoFiles, ...newFiles]);
 }
 };

 const convertVideos = async () => {
 setIsConverting(true);
 const outputDir = `${FileSystem.documentDirectory}Output`;

 const dirInfo = await FileSystem.getInfoAsync(outputDir);
 if (!dirInfo.exists) {
 await FileSystem.makeDirectoryAsync(outputDir, { intermediates: true });
 }

 for (const video of videoFiles) {
 const { uri } = video;
 const filename = uri.split('/').pop();
 const outputFilePath = `${outputDir}/${filename.split('.').slice(0, -1).join('.')}_modified.mp4`;

 const ffmpegCommand = `-y -i "${uri}" -af "atempo=1.02, bass=g=4:f=80:w=3, treble=g=4:f=3200:w=3, firequalizer=gain_entry='entry(0,0);entry(62,2);entry(125,1.5);entry(250,1);entry(500,1);entry(1000,1);entry(2000,1.5);entry(4000,2.5);entry(8000,3);entry(16000,4)', compand=attacks=0.05:decays=0.25:points=-80/-80-50/-15-30/-10-10/-2:soft-knee=4:gain=2, deesser, highpass=f=35, lowpass=f=17000, loudnorm=I=-16:LRA=11:TP=-1.5, volume=3.9dB" -c:v copy -c:a aac -b:a 224k -ar 48000 -threads 0 "${outputFilePath}"`;

 try {
 const session = await FFmpegKit.execute(ffmpegCommand);
 const returnCode = await session.getReturnCode();

 if (ReturnCode.isSuccess(returnCode)) {
 console.log(`Video converted: ${outputFilePath}`);
 } else if (ReturnCode.isCancel(returnCode)) {
 console.log('Conversion cancelled');
 } else {
 console.error(`FFmpeg process failed: ${session.getFailStackTrace()}`);
 }
 } catch (error) {
 console.error(`Error converting video: ${error.message}`);
 }
 }

 setIsConverting(false);
 Alert.alert('Conversion Complete', 'All videos have been converted.');
 };

 const deleteVideo = (uri) => {
 LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
 setVideoFiles(videoFiles.filter((video) => video.uri !== uri));
 };

 const clearAllVideos = () => {
 LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
 setVideoFiles([]);
 };

 const toggleLayout = () => {
 LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut);
 setIsGridView(!isGridView);
 };

 return (
 <view style="{styles.container}">
 <text style="{styles.header}">Video Converter App</text>
 <touchableopacity style="{styles.addButton}">
 <text style="{styles.addButtonText}">Select or Browse Videos</text>
 </touchableopacity>
 <view style="{styles.headerContainer}">
 <text style="{styles.videoCount}">Total Videos: {videoFiles.length}</text>
 {videoFiles.length > 0 && (
 <>
 <touchableopacity style="{styles.clearButtonContainer}">
 <materialicons size="{24}" color="red" style="{styles.clearIcon}"></materialicons>
 <text style="{styles.clearAllText}">Clear All</text>
 </touchableopacity>
 <touchableopacity style="{styles.toggleLayoutButton}">
 <materialicons size="{24}" color="#fff"></materialicons>
 </touchableopacity>
 >
 )}
 </view>
 {isGridView ? (
 <scrollview contentcontainerstyle="{styles.gridContainer}">
 {videoFiles.map((item, index) => (
 <view key="{index}" style="{styles.videoItemGrid}">
 
 <touchableopacity>> deleteVideo(item.uri)} style={styles.deleteButtonGrid}>
 <materialicons size="{24}" color="red"></materialicons>
 </touchableopacity>
 </view>
 ))}
 </scrollview>
 ) : (
 <view style="{styles.list}">
 {videoFiles.map((item, index) => (
 <view key="{index}" style="{styles.videoItem}">
 
 <text style="{styles.fileName}">{decodeURI(item.fileName || item.uri.split('/').pop() || 'Unknown File')}</text>
 <touchableopacity>> deleteVideo(item.uri)} style={styles.deleteButton}>
 <materialicons size="{24}" color="red"></materialicons>
 </touchableopacity>
 </view>
 ))}
 </view>
 )}
 {videoFiles.length > 0 && (
 <touchableopacity style="{styles.convertButton}" disabled="{isConverting}">
 <text style="{styles.convertButtonText}">{isConverting ? 'Converting...' : 'Convert'}</text>
 </touchableopacity>
 )}
 </view>
 );
}

const styles = StyleSheet.create({
 container: {
 flex: 1,
 backgroundColor: '#fff',
 alignItems: 'center',
 padding: 10,
 },
 header: {
 fontSize: 24,
 fontWeight: 'bold',
 marginBottom: 5,
 },
 addButton: {
 backgroundColor: '#007BFF',
 padding: 15,
 borderRadius: 10,
 alignItems: 'center',
 marginBottom: 5,
 width: '100%',
 elevation: 2,
 shadowColor: '#000',
 shadowOffset: { width: 0, height: 5 },
 shadowOpacity: 0.8,
 shadowRadius: 2,
 },
 addButtonText: {
 color: '#fff',
 fontSize: 18,
 fontWeight: 'bold',
 },
 headerContainer: {
 flexDirection: 'row',
 alignItems: 'center',
 justifyContent: 'space-between',
 width: '100%',
 marginBottom: 10,
 },
 videoCount: {
 fontSize: 18,
 },
 clearButtonContainer: {
 flexDirection: 'row',
 alignItems: 'center',
 marginRight: 10,
 },
 clearIcon: {
 marginRight: 5,
 },
 clearAllText: {
 fontSize: 16,
 color: 'red',
 textDecorationLine: 'underline',
 },
 toggleLayoutButton: {
 backgroundColor: '#007BFF',
 padding: 1,
 borderRadius: 8,
 alignItems: 'center',
 justifyContent: 'center',
 },
 list: {
 flex: 1,
 width: '100%',
 },
 videoItem: {
 padding: 5,
 borderBottomColor: '#ccc',
 borderBottomWidth: 0.7,
 flexDirection: 'row',
 alignItems: 'center',
 },
 videoItemGrid: {
 flexDirection: 'column',
 alignItems: 'center',
 margin: 4,
 borderWidth: 1,
 borderColor: '#ccc',
 borderRadius: 8,
 padding: 2,
 position: 'relative',
 },
 thumbnail: {
 width: 70,
 height: 70,
 marginRight: 10,
 },
 thumbnailGrid: {
 width: 80,
 height: 80,
 marginBottom: 0,
 },
 fileName: {
 fontSize: 16,
 marginLeft: 10,
 flex: 1,
 },
 deleteButton: {
 marginLeft: 60,
 width: 20,
 height: 20,
 },
 deleteButtonGrid: {
 position: 'absolute',
 bottom: 5,
 right: 5,
 },
 convertButton: {
 backgroundColor: '#007BFF',
 padding: 15,
 borderRadius: 10,
 alignItems: 'center',
 marginTop: 20,
 width: '100%',
 },
 convertButtonText: {
 color: '#fff',
 fontSize: 18,
 fontWeight: 'bold',
 },
 gridContainer: {
 flexDirection: 'row',
 flexWrap: 'wrap',
 justifyContent: 'flex-start',
 paddingVertical: 5,
 paddingHorizontal: 5,
 width: '100%',
 },
});






App.json




{
 "expo": {
 "name": "VidoeConvert",
 "slug": "VidoeConvert",
 "version": "1.0.0",
 "orientation": "portrait",
 "icon": "./assets/icon.png",
 "userInterfaceStyle": "light",
 "splash": {
 "image": "./assets/splash.png",
 "resizeMode": "contain",
 "backgroundColor": "#ffffff"
 },
 "ios": {
 "supportsTablet": true
 },
 "android": {
 "adaptiveIcon": {
 "foregroundImage": "./assets/adaptive-icon.png",
 "backgroundColor": "#ffffff"
 },
 "package": "com.anonymous.VidoeConvert"
 },
 "web": {
 "favicon": "./assets/favicon.png"
 },
 "plugins": [
 "@config-plugins/ffmpeg-kit-react-native",
 "expo-build-properties"
 ]
 }
}






Package.json




{
 "name": "vidoeconvert",
 "version": "1.0.0",
 "main": "expo/AppEntry.js",
 "scripts": {
 "start": "expo start",
 "android": "expo run:android",
 "ios": "expo run:ios",
 "web": "expo start --web"
 },
 "dependencies": {
 "@config-plugins/ffmpeg-kit-react-native": "^8.0.0",
 "@expo/metro-runtime": "~3.2.1",
 "expo": "~51.0.17",
 "expo-asset": "~10.0.10",
 "expo-av": "^14.0.6",
 "expo-document-picker": "~12.0.2",
 "expo-file-system": "~17.0.1",
 "expo-image-picker": "~15.0.7",
 "expo-media-library": "~16.0.4",
 "expo-status-bar": "~1.12.1",
 "ffmpeg-kit-react-native": "^6.0.2",
 "react": "18.2.0",
 "react-dom": "18.2.0",
 "react-native": "^0.74.3",
 "react-native-document-picker": "^9.3.0",
 "react-native-ffmpeg": "^0.5.2",
 "react-native-vector-icons": "^10.1.0",
 "react-native-web": "~0.19.10",
 "expo-build-properties": "~0.12.3"
 },
 "devDependencies": {
 "@babel/core": "^7.20.0"
 },
 "private": true
}






Has anyone encountered a similar issue or can point me in the right direction to resolve this error ? Any help would be greatly appreciated !


How to remove the error ?


any configruation required for this project ?


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