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Médias (33)
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Stereo master soundtrack
17 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Audio
-
#7 Ambience
16 octobre 2011, par
Mis à jour : Juin 2015
Langue : English
Type : Audio
-
#6 Teaser Music
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#5 End Title
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#3 The Safest Place
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
-
#4 Emo Creates
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
Autres articles (47)
-
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Contribute to translation
13 avril 2011You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
MediaSPIP is currently available in French and English (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (6999)
-
App review video ( App Store )
23 août 2016, par Arnold MappsI want to convert a video recorded with Quick Time ( resolution 750*1334 ) to 1080*1920.
Apple only accept resolution 1080*1920p for iphone6PLUS for App review video.My license key with final cut pro X has expired and
ffmpeg -i AppPreviewIphone6.mp4 -vf scale=1080:1920 AppPreviewIphone6PLUS.mp4 give me a resolution of 1079*1920 instead 1080*1920Have you an idea what software I can use to change video resolution ?
-
Merged Video Contains Inverted Clips After First Video Ends
3 février, par Nikunj AgrawalI am working on a Flutter application that merges multiple videos using
ffmpeg_kit_flutter. However, after merging, I notice that the second video (and any subsequent ones) appear inverted or rotated in the final output.

Issue Details :


- 

- The first video appears normal.
- The videos can be recorded using both front and back cameras.
- The second (and later) videos are flipped or rotated upside down.
- This happens after merging using
ffmpeg_kit_flutter.










Question :
How can I correctly merge multiple videos in Flutter without rotation issues ? Is there a way to normalize video orientation before merging using
ffmpeg_kit_flutter?

Any help would be appreciated ! 🚀


Code :


import 'dart:io';
import 'dart:math';

import 'package:camera/camera.dart';
import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';
import 'package:ffmpeg_kit_flutter/return_code.dart';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:record/record.dart';
import 'package:videotest/video_player.dart';

class MergeVideoRecording extends StatefulWidget {
 const MergeVideoRecording({super.key});

 @override
 State<mergevideorecording> createState() => _MergeVideoRecordingState();
}

class _MergeVideoRecordingState extends State<mergevideorecording> {
 CameraController? _cameraController;
 final AudioRecorder _audioRecorder = AudioRecorder();

 bool _isRecording = false;
 String? _videoPath;
 String? _audioPath;
 List<cameradescription> _cameras = [];
 int _currentCameraIndex = 0;
 final List<string> _recordedVideos = [];

 @override
 Widget build(BuildContext context) {
 return Scaffold(
 body: Column(
 mainAxisAlignment: MainAxisAlignment.center,
 children: [
 _cameraController != null && _cameraController!.value.isInitialized
 ? SizedBox(
 width: MediaQuery.of(context).size.width * 0.4,
 height: MediaQuery.of(context).size.height * 0.3,
 child: Stack(
 children: [
 ClipRRect(
 borderRadius: BorderRadius.circular(16),
 child: SizedBox(
 width: MediaQuery.of(context).size.width * 0.4,
 height: MediaQuery.of(context).size.height * 0.3,
 child: Transform(
 alignment: Alignment.center,
 transform:
 _cameras[_currentCameraIndex].lensDirection ==
 CameraLensDirection.front
 ? Matrix4.rotationY(pi)
 : Matrix4.identity(),
 child: CameraPreview(_cameraController!),
 ),
 ),
 ),
 Align(
 alignment: Alignment.topRight,
 child: InkWell(
 onTap: _switchCamera,
 child: const Padding(
 padding: EdgeInsets.all(8.0),
 child: CircleAvatar(
 radius: 18,
 backgroundColor: Colors.white,
 child: Icon(
 Icons.flip_camera_android,
 color: Colors.black,
 ),
 ),
 ),
 ),
 ),
 ],
 ),
 )
 : const CircularProgressIndicator(),
 const SizedBox(height: 16),
 Row(
 mainAxisAlignment: MainAxisAlignment.center,
 children: [
 FloatingActionButton(
 heroTag: 'record_button',
 onPressed: _toggleRecording,
 child: Icon(
 _isRecording ? Icons.stop : Icons.video_camera_back,
 ),
 ),
 const SizedBox(
 width: 50,
 ),
 FloatingActionButton(
 heroTag: 'merge_button',
 onPressed: _mergeVideos,
 child: const Icon(
 Icons.merge,
 ),
 ),
 ],
 ),
 if (!_isRecording)
 ListView.builder(
 shrinkWrap: true,
 itemCount: _recordedVideos.length,
 itemBuilder: (context, index) => InkWell(
 onTap: () {
 Navigator.push(
 context,
 MaterialPageRoute(
 builder: (context) => VideoPlayerScreen(
 videoPath: _recordedVideos[index],
 ),
 ),
 );
 },
 child: ListTile(
 title: Text('Video ${index + 1}'),
 subtitle: Text('Path ${_recordedVideos[index]}'),
 trailing: const Icon(Icons.play_arrow),
 ),
 ),
 ),
 ],
 ),
 );
 }

 @override
 void dispose() {
 _cameraController?.dispose();
 _audioRecorder.dispose();
 super.dispose();
 }

 @override
 void initState() {
 super.initState();
 _initializeDevices();
 }

 Future<void> _initializeCameraController(CameraDescription camera) async {
 _cameraController = CameraController(
 camera,
 ResolutionPreset.high,
 enableAudio: true,
 imageFormatGroup: ImageFormatGroup.yuv420, // Add this line
 );

 await _cameraController!.initialize();
 await _cameraController!.setExposureMode(ExposureMode.auto);
 await _cameraController!.setFocusMode(FocusMode.auto);
 setState(() {});
 }

 Future<void> _initializeDevices() async {
 final cameraStatus = await Permission.camera.request();
 final micStatus = await Permission.microphone.request();

 if (!cameraStatus.isGranted || !micStatus.isGranted) {
 _showError('Camera and microphone permissions required');
 return;
 }

 _cameras = await availableCameras();
 if (_cameras.isNotEmpty) {
 final frontCameraIndex = _cameras.indexWhere(
 (camera) => camera.lensDirection == CameraLensDirection.front);
 _currentCameraIndex = frontCameraIndex != -1 ? frontCameraIndex : 0;
 await _initializeCameraController(_cameras[_currentCameraIndex]);
 }
 }

 // Merge video
 Future<void> _mergeVideos() async {
 if (_recordedVideos.isEmpty) {
 _showError('No videos to merge');
 return;
 }

 try {
 // Debug logging
 print('Starting merge process');
 print('Number of videos to merge: ${_recordedVideos.length}');
 for (var i = 0; i < _recordedVideos.length; i++) {
 final file = File(_recordedVideos[i]);
 final exists = await file.exists();
 final size = exists ? await file.length() : 0;
 print('Video $i: ${_recordedVideos[i]}');
 print('Exists: $exists, Size: $size bytes');
 }

 final Directory appDir = await getApplicationDocumentsDirectory();
 final String outputPath =
 '${appDir.path}/merged_${DateTime.now().millisecondsSinceEpoch}.mp4';
 final String listFilePath = '${appDir.path}/list.txt';

 print('Output path: $outputPath');
 print('List file path: $listFilePath');

 // Create and verify list file
 final listFile = File(listFilePath);
 final fileContent = _recordedVideos
 .map((path) => "file '${path.replaceAll("'", "'\\''")}'")
 .join('\n');
 await listFile.writeAsString(fileContent);

 print('List file content:');
 print(await listFile.readAsString());

 // Simpler FFmpeg command for testing
 final command = '''
 -f concat
 -safe 0
 -i "$listFilePath"
 -c copy
 -y
 "$outputPath"
 '''
 .trim()
 .replaceAll('\n', ' ');

 print('Executing FFmpeg command: $command');

 final session = await FFmpegKit.execute(command);
 final returnCode = await session.getReturnCode();
 final logs = await session.getAllLogsAsString();
 final failStackTrace = await session.getFailStackTrace();

 print('FFmpeg return code: ${returnCode?.getValue() ?? "null"}');
 print('FFmpeg logs: $logs');
 if (failStackTrace != null) {
 print('FFmpeg fail stack trace: $failStackTrace');
 }

 if (ReturnCode.isSuccess(returnCode)) {
 final outputFile = File(outputPath);
 final outputExists = await outputFile.exists();
 final outputSize = outputExists ? await outputFile.length() : 0;

 print('Output file exists: $outputExists');
 print('Output file size: $outputSize bytes');

 if (outputExists && outputSize > 0) {
 setState(() => _recordedVideos.add(outputPath));
 _showSuccess('Videos merged successfully');
 } else {
 _showError('Merged file is empty or not created');
 }
 } else {
 _showError('Failed to merge videos. Check logs for details.');
 }

 // Clean up
 try {
 await listFile.delete();
 print('List file cleaned up successfully');
 } catch (e) {
 print('Failed to delete list file: $e');
 }
 } catch (e, s) {
 print('Error during merge: $e');
 print('Stack trace: $s');
 _showError('Error merging videos: ${e.toString()}');
 }
 }

 void _showError(String message) {
 ScaffoldMessenger.of(context).showSnackBar(
 SnackBar(content: Text(message), backgroundColor: Colors.red),
 );
 }

 void _showSuccess(String message) {
 ScaffoldMessenger.of(context).showSnackBar(
 SnackBar(content: Text(message), backgroundColor: Colors.green),
 );
 }

 Future<void> _startAudioRecording() async {
 try {
 final Directory tempDir = await getTemporaryDirectory();
 final audioPath = '${tempDir.path}/recording.wav';
 await _audioRecorder.start(const RecordConfig(), path: audioPath);
 setState(() => _isRecording = true);
 } catch (e) {
 _showError('Recording start error: $e');
 }
 }

 Future<void> _startVideoRecording() async {
 try {
 await _cameraController!.startVideoRecording();
 setState(() => _isRecording = true);
 } catch (e) {
 _showError('Recording start error: $e');
 }
 }

 Future<void> _stopAndSaveAudioRecording() async {
 _audioPath = await _audioRecorder.stop();
 if (_audioPath != null) {
 final Directory appDir = await getApplicationDocumentsDirectory();
 final timestamp = DateTime.now().millisecondsSinceEpoch;
 final String audioFileName = 'audio_$timestamp.wav';
 await File(_audioPath!).copy('${appDir.path}/$audioFileName');
 _showSuccess('Saved: $audioFileName');
 }
 }

 Future<void> _stopAndSaveVideoRecording() async {
 try {
 final video = await _cameraController!.stopVideoRecording();
 _videoPath = video.path;

 if (_videoPath != null) {
 final Directory appDir = await getApplicationDocumentsDirectory();
 final timestamp = DateTime.now().millisecondsSinceEpoch;
 final String videoFileName = 'video_$timestamp.mp4';
 final savedVideoPath = '${appDir.path}/$videoFileName';
 await File(_videoPath!).copy(savedVideoPath);

 setState(() {
 _recordedVideos.add(savedVideoPath);
 _isRecording = false;
 });

 _showSuccess('Saved: $videoFileName');
 }
 } catch (e) {
 _showError('Recording stop error: $e');
 }
 }

 Future<void> _switchCamera() async {
 if (_cameras.length <= 1) return;

 if (_isRecording) {
 await _stopAndSaveVideoRecording();
 _currentCameraIndex = (_currentCameraIndex + 1) % _cameras.length;
 await _initializeCameraController(_cameras[_currentCameraIndex]);
 await _startVideoRecording();
 } else {
 _currentCameraIndex = (_currentCameraIndex + 1) % _cameras.length;
 await _initializeCameraController(_cameras[_currentCameraIndex]);
 }
 }

 Future<void> _toggleRecording() async {
 if (_cameraController == null) return;

 if (_isRecording) {
 await _stopAndSaveVideoRecording();
 await _stopAndSaveAudioRecording();
 } else {
 _startVideoRecording();
 _startAudioRecording();
 setState(() => _recordedVideos.clear());
 }
 }
}
</void></void></void></void></void></void></void></void></void></string></cameradescription></mergevideorecording></mergevideorecording>

-
Unable to scrub video after remuxing multiple mpeg-ts to mp4
21 juillet 2022, par JonaI have written custom code to concat multiple mpeg-ts files into an mp4 video file. I've used as reference the remuxing code sample.


I'm having issues with the final output. I'm unable to scrub the video on QuickTime. The final output seems to be missing something.


I compared using ffprobe my custom code remuxer results to that of using the following terminal command :


ffmpeg -i "concat:input1.ts|input2.ts|input3.ts" -c copy output.mp4


To my surprise, the videos look almost identical but I'm noticing some differences in the reported distance and keyframe values. I also did a hex comparison and see minor differences at the end of the file which tells me I've muxed the frames correctly. What could I be missing ? Any tips or ideas would be really helpful !


FFmpeg terminal remuxed video [WORKING VIDEO]



Custom remuxer code video [SCRUBBING BROKEN]



App.mp4 vs ffmpeg.mp4 remuxed video



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