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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (17)
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Problèmes fréquents
10 mars 2010, parPHP et safe_mode activé
Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site -
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 -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (3976)
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Flutter : How to use "ffmpeg_kit_flutter" to merge videos ?
28 mai 2024, par Hani Kanakrii am using "ffmpeg_kit_flutter" to merge two videos with code



import 'dart:io';

import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';
import 'package:ffmpeg_kit_flutter/abstract_session.dart';
import 'package:ffmpeg_kit_flutter/return_code.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:wechat_assets_picker/wechat_assets_picker.dart';

import '/features/merge_videos/cubit/merge_videos_state.dart';

class MergeVideosCubit extends Cubit<mergevideosstate> {
 MergeVideosCubit(this.originalFile) : super(InitialMergeVideos());
 final File? originalFile;

 Future<void> selectVideo(BuildContext context) async {
 final List<assetentity>? videos = await AssetPicker.pickAssets(
 context,
 pickerConfig: const AssetPickerConfig(requestType: RequestType.video),
 );

 if (videos != null && videos.isNotEmpty) {
 for (AssetEntity asset in videos) {
 File? videoFile = await asset.file;
 if (videoFile != null) {
 print('Selected Asset Path: ${videoFile.path}');
 mergeVideos(originalFile!.path, videoFile.path);
 }
 }
 }
 }

 Future<void> mergeVideos(String inputPath1, String inputPath2) async {
 final String outputPath = "/storage/emulated/0/merged_video_${now()}.mp4";
 // final String command =
 // '-i $inputPath1 -i $inputPath2 -filter_complex "[0:v][0:a][1:v][1:a] concat=n=2:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" -y $outputPath';
 final String command =
 '-i $inputPath1 -i $inputPath2 -filter_complex "[0:v][1:v]concat=n=2:v=1:a=0[outv]" -map "[outv]" -y $outputPath';
 print("FFmpeg process starting with command: $command");
 print(command);
 print("LOADING LOADING LOADING LOADING LOADING LOADING LOADING MERGE");
 emit(LoadMergeVideos());
 await FFmpegKit.execute(command).then((value) async {
 await value.getDuration();
 var id = await value.getSessionId();

 print(value);
 print(id);
 print(await value.getDuration());
 });
 await FFmpegKit.executeAsync(command, (session) async {
 final returnCode = await session.getReturnCode();
 await session.getSessionId();
 print(await session.getSessionId());

 if (ReturnCode.isSuccess(returnCode)) {
 print("SUCCESS: Video merged successfully at $outputPath");
 print("SUCCESS SUCCESS SUCCESS SUCCESS SUCCESS SUCCESS MERGE");
 emit(SuccessMergeVideos());

 } else if (ReturnCode.isCancel(returnCode)) {
 print("CANCELLED: Video merging was cancelled.");
 print("CANCEL CANCEL CANCEL CANCEL CANCEL CANCEL CANCEL MERGE");
 emit(CancelMergeVideos());

 } else {
 print("ERROR: Failed to merge videos.");
 print("ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR MERGE");
 emit(ErrorMergeVideos());

 final failLog = await session.getFailStackTrace();

 print("FFmpeg Failure Log: $failLog");
 }
 });
 }

 String now() {
 final DateTime now = DateTime.now();
 return "${now.year}${now.month}${now.day}_${now.hour}${now.minute}${now.second}";
 }
}
</void></assetentity></void></mergevideosstate>

The console when i run the code



D/EGL_emulation(23858): app_time_stats: avg=2379.66ms min=5.87ms max=23160.09ms count=10
I/PhotoManager(23858): uri: content://media/external/file
I/PhotoManager(23858): projection: _display_name, _data, _id, title, bucket_id, bucket_display_name, width, height, orientation, date_added, date_modified, mime_type, datetaken, duration, media_type, relative_path
I/PhotoManager(23858): selection: _id = ?
I/PhotoManager(23858): selectionArgs: 1000000039
I/PhotoManager(23858): sortOrder: null
I/PhotoManager(23858): sql: _id = 1000000039
I/PhotoManager(23858): cursor count: 1
I/flutter (23858): Selected Asset Path: /storage/emulated/0/Movies/VID_20240512_115116.mp4
I/flutter (23858): FFmpeg process starting with command: -i /storage/emulated/0/Movies/VID_20240512_115128.mp4 -i /storage/emulated/0/Movies/VID_20240512_115116.mp4 -filter_complex "[0:v][1:v]concat=n=2:v=1:a=0[outv]" -map "[outv]" -y /storage/emulated/0/merged_video_2024513_122719.mp4
I/flutter (23858): -i /storage/emulated/0/Movies/VID_20240512_115128.mp4 -i /storage/emulated/0/Movies/VID_20240512_115116.mp4 -filter_complex "[0:v][1:v]concat=n=2:v=1:a=0[outv]" -map "[outv]" -y /storage/emulated/0/merged_video_2024513_122719.mp4
I/flutter (23858): LOADING LOADING LOADING LOADING LOADING LOADING LOADING MERGE
I/flutter (23858): Instance of 'FFmpegSession'
I/flutter (23858): 1
I/flutter (23858): 246
I/flutter (23858): 2
I/flutter (23858): ERROR: Failed to merge videos.
I/flutter (23858): ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR MERGE
D/EGL_emulation(23858): app_time_stats: avg=87.27ms min=4.92ms max=319.92ms count=13
I/flutter (23858): FFmpeg Failure Log: null


In "mergeVideos" function the "returnCode" it return value "1" when i look in the package code


getState() async {
 try {
 return _platform
 .abstractSessionGetState(this.getSessionId())
 .then((state) {
 switch (state) {
 case 0:
 return SessionState.created;
 case 1:
 return SessionState.running;
 case 2:
 return SessionState.failed;
 case 3:
 default:
 return SessionState.completed;
 }
 });
 } on PlatformException catch (e, stack) {
 print("Plugin getState error: ${e.message}");
 return Future.error("getState failed.", stack);
 }
}


Which mean its keep running but in my code it does not wait until complete merging


how can i fix that ??!


but i think my problem is in command(concat)



-i /storage/emulated/0/Movies/VID_20240512_115128.mp4 -i /storage/emulated/0/Movies/VID_20240512_115116.mp4 -filter_complex "[0:v][1:v]concat=n=2:v=1:a=0[outv]" -map "[outv]" -y /storage/emulated/0/merged_video_2024513_122719.mp4


(This is my command when i run the code) ??


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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 ?
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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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