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Autres articles (34)
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Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
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 (...)
Sur d’autres sites (8530)
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How to (visually) losslessly compress a video with GPU acceleration in ffmpeg ?
4 juin 2022, par Tizian HeckmannI am trying to compress a video in ffmpeg with GPU acceleration, but the result always looks bad. This is what I have tried and none of this has worked for me :


Preset 18 is called "best quality" when looking at ffmpeg -h encoder=hevc_nvenc

ffmpeg -i input.mp4 -c:v hevc_nvenc -preset 18 compressed.mp4

Also :

ffmpeg -i input.mp4 -c:v h264_nvenc -preset 18 compressed.mp4

Unfortunately, the preset lossless is deprecated. When trying

ffmpeg -i input.mp4 -c:v h264_nvenc -preset lossless compressed.mp4

the output file just grows enormous.

Any help is appreciated.

Edit : Since my question is being received as inappropriate by the community, I would like to know why. This was my first question, any advice on how to word it better or tell me why it just does not fit here would be appreciated. Thank you.

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How to bold a font in ffmpeg ?
28 février 2023, par Peter.kI have an issue which I don't fully understand. I use font to merge subtitles in video which is installed in my laptop and everything works fine with this code :


-vf "subtitles=tt101.srt:force_style='FontName=Lucida Console,Style=Bold,FontSize=15,PrimaryColour=&H00111188,OutlineColour=&HFFFFFFFF,BorderStyle=4,BackColour=&H44FFFFFF,Outline=5,Shadow=0,MarginV=10'"


But later I found this font isn't really bold but regular. I checked in my system and indeed, there's no bold version installed, so this
Style=Boldfragment is ignored (as I think it is). But how the hell, while using this very font in some other programs like Word, Excel, Photoshop, PotPlayer, etc, I am able to bold this font anyway ? Whyffmpegdoesn't make it ? Does these programs use something else than Windows show in the Font catalog ?

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Is there a way to program the (Download) button to save a group of images as a one video ?
9 février 2024, par Lina Al-fawzanThis is my entire code. Its function is that everything the user writes or says will have images returned to him according to what he wrote/said, and the next image will be shown to him after he presses “close,” and he can save each image separately. I want to make a simple modification to it. First, instead of a close button, I want each image to be displayed for 3 seconds and the next one to be displayed, and so on... “all of them in one window”, and for the “download” button to be when the last image is displayed, and for them all to be saved in one video.


import 'package:flutter/material.dart';
import 'package:flutter/services.dart' show rootBundle;
import 'dart:convert';
import 'dart:typed_data';
import 'package:image_gallery_saver/image_gallery_saver.dart';
import 'package:speech_to_text/speech_to_text.dart' as stt;

void main() {
 runApp(MyApp());
}

class MyApp extends StatelessWidget {
 @override
 Widget build(BuildContext context) {
 return MaterialApp(
 home: MyHomePage(),
 );
 }
}

class MyHomePage extends StatefulWidget {
 @override
 _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<myhomepage> {
 TextEditingController _textEditingController = TextEditingController();
 late stt.SpeechToText _speech;
 bool _isListening = false;

 @override
 void initState() {
 super.initState();
 _speech = stt.SpeechToText();
 }

 void _listen() async {
 if (!_isListening) {
 bool available = await _speech.initialize(
 onStatus: (val) => print('onStatus: $val'),
 onError: (val) => print('onError: $val'),
 );
 if (available) {
 setState(() => _isListening = true);
 _speech.listen(
 onResult: (val) => setState(() {
 _textEditingController.text = val.recognizedWords;
 if (val.hasConfidenceRating && val.confidence > 0) {
 _showImages(val.recognizedWords);
 }
 }),
 );
 }
 } else {
 setState(() => _isListening = false);
 _speech.stop();
 }
 }

 @override
 Widget build(BuildContext context) {
 return Scaffold(
 appBar: AppBar(
 title: Text('Image Viewer'),
 ),
 body: Padding(
 padding: const EdgeInsets.all(16.0),
 child: Column(
 mainAxisAlignment: MainAxisAlignment.center,
 children: [
 TextField(
 controller: _textEditingController,
 decoration: const InputDecoration(
 labelText: 'Enter a word',
 ),
 ),
 SizedBox(height: 16.0),
 ElevatedButton(
 onPressed: () {
 String userInput = _textEditingController.text;
 _showImages(userInput);
 },
 child: Text('Show Images'),
 ),
 SizedBox(height: 16.0),
 ElevatedButton(
 onPressed: _listen,
 child: Text(_isListening ? 'Stop Listening' : 'Start Listening'),
 ),
 ],
 ),
 ),
 );
 }

Future<void> _showImages(String userInput) async {
 String directoryPath = 'assets/output_images/';
 print("User Input: $userInput");
 print("Directory Path: $directoryPath");

 List<string> assetFiles = await rootBundle
 .loadString('AssetManifest.json')
 .then((String manifestContent) {
 final Map manifestMap = json.decode(manifestContent);
 return manifestMap.keys
 .where((String key) => key.startsWith(directoryPath))
 .toList();
 });

 List<string> imageFiles = assetFiles.where((String assetPath) =>
 assetPath.toLowerCase().endsWith('.jpg') ||
 assetPath.toLowerCase().endsWith('.gif')).toList();

 List<string> words = userInput.split(' '); // Tokenize the sentence into words

 for (String word in words) {
 String wordImagePath = '$directoryPath$word.gif';

 if (imageFiles.contains(wordImagePath)) {
 await _showDialogWithImage(wordImagePath);
 } else {
 for (int i = 0; i < word.length; i++) {
 String letter = word[i];
 String letterImagePath = imageFiles.firstWhere(
 (assetPath) => assetPath.toLowerCase().endsWith('$letter.jpg'),
 orElse: () => '',
 );
 if (letterImagePath.isNotEmpty) {
 await _showDialogWithImage(letterImagePath);
 } else {
 print('No image found for $letter');
 }
 }
 }
 }
}

 

 Future<void> _showDialogWithImage(String imagePath) async {
 await showDialog<void>(
 context: context,
 builder: (BuildContext context) {
 return AlertDialog(
 content: Image.asset(imagePath),
 actions: [
 TextButton(
 onPressed: () {
 Navigator.of(context).pop();
 },
 child: Text('Close'),
 ),
 TextButton(
 onPressed: () async {
 await _downloadImage(imagePath);
 Navigator.of(context).pop();
 },
 child: Text('Download'),
 ),
 ],
 );
 },
 );
 }

 Future<void> _downloadImage(String assetPath) async {
 try {
 final ByteData data = await rootBundle.load(assetPath);
 final List<int> bytes = data.buffer.asUint8List();

 final result = await ImageGallerySaver.saveImage(Uint8List.fromList(bytes));

 if (result != null) {
 ScaffoldMessenger.of(context).showSnackBar(
 SnackBar(
 content: Text('Image saved to gallery.'),
 ),
 );
 } else {
 ScaffoldMessenger.of(context).showSnackBar(
 SnackBar(
 content: Text('Failed to save image to gallery.'),
 ),
 );
 }
 } catch (e) {
 print('Error downloading image: $e');
 }
 }
}

</int></void></void></void></string></string></string></void></myhomepage>

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