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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (109)
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Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation" -
Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Submit enhancements and plugins
13 avril 2011If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.
Sur d’autres sites (9347)
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make fifo pipe in java(windows), write some data into it, let other process read the pipe
9 novembre 2017, par vs93My objective is to create a named pipe(fifo) in windows(java), write some data(coming from camera) into that and invoke ffmpeg command to make mp4 from that data. But I suspect that it is not opening a fifo pipe, rather it is opening a file. How can I make it open a fifo pipe ?
Here is the code :public void run () {
String mp4Folder = "C://Users/user_2/Desktop/streamDestination"; // Where the MP4 is to be kept
VFrame frame = null;
int actualPipeValLen = 0;
FileOutputStream requestStream = null;
long lastProcessedTS = 0;
final String FIFOPATH = "D://FIFO//";
final String PIPE_NAME = FIFOPATH + "myfifo";
final String MKFIFOCOMMAND = "mkfifo -m=rw " + PIPE_NAME;
final String DELFIFOCOMMAND = "rm -r " + PIPE_NAME;
String mp4FileName = mp4Folder + File.separator + "1.mp4";
mp4FileName = mp4FileName.replace("\\", "/");
long firstTimeStamp = 0;
try {
Runtime.getRuntime().exec(MKFIFOCOMMAND);
} catch (IOException e1) {
e1.printStackTrace();
}
if(firstTimeStamp == 0) {
firstTimeStamp = frame.getTimestamp();
}
if((frame.getTimestamp() - firstTimeStamp) > (15 * 1000)) {
if(requestStream != null) {
requestStream.close();
requestStream = null;
}
if(actualPipeValLen > 0) {
String[] ffmpeg = new String[] {"ffmpeg", "-i", PIPE_NAME , "-vcodec", "copy", mp4FileName };
Process ffmpegProcess = Runtime.getRuntime().exec(ffmpeg);
actualPipeValLen = 0;
firstTimeStamp = lastProcessedTS;
Thread.sleep(2 * 1000);
try {
Runtime.getRuntime().exec(DELFIFOCOMMAND);
} catch (IOException e1) {
e1.printStackTrace();
}
System.exit(0);
}
} else {
System.out.println("Writing into pipe : " + actualPipeValLen);
if(requestStream == null) {
requestStream = new FileOutputStream(PIPE_NAME);
}
requestStream.write(frame.getFrame());
actualPipeValLen += frame.getFrame().length;
lastProcessedTS = frame.getTimestamp();
}}
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Acurate cut mp4 avconv or ffmpeg
3 septembre 2014, par diogopmsavconv -y -i "/files/33.mp4" -ss 0.000000 -t 11.8 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-0.000000.ts"
avconv -y -i "/files/33.mp4" -ss 11.800000 -t 11.768254 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-11.800000.ts"
avconv -y -i "/files/33.mp4" -ss 23.568254 -t 11.888617 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-23.568254.ts"
avconv -y -i "/files/33.mp4" -ss 35.456871 -t 11.423129 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-35.456871.ts"
avconv -y -i "/files/33.mp4" -ss 46.880000 -t 12.075465 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-46.880000.ts"
avconv -y -i "/files/33.mp4" -ss 58.955465 -t 11.404535 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-58.955465.ts"
avconv -y -i "/files/33.mp4" -ss 70.360000 -t 12.094059 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-70.360000.ts"
avconv -y -i "/files/33.mp4" -ss 82.454059 -t 11.385941 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-82.454059.ts"
avconv -y -i "/files/33.mp4" -ss 93.840000 -t 12.112653 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-93.840000.ts"
avconv -y -i "/files/33.mp4" -ss 105.952653 -t 11.367347 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-105.952653.ts"
avconv -y -i "/files/33.mp4" -ss 117.320000 -t 12.131247 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-117.320000.ts"
avconv -y -i "/files/33.mp4" -ss 129.451247 -t 11.348753 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-129.451247.ts"
avconv -y -i "/files/33.mp4" -ss 140.800000 -t 12.149841 -async 1 -bsf h264_mp4toannexb -c copy "/encoder/live/bla-140.800000.ts"cat bla-*.ts > final.ts ---> this final movie is not fluid....What i need to do do fix it
Anyone can help with the final solution ?
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FFmpegKitFlutter, Error : MissingPluginException(No implementation found for method ffmpegSession on channel flutter.arthenica.com/ffmpeg_kit)
12 février, par 7SolomonI Have this simple Flutter function, to compress Audio Files


import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart';
import 'package:ffmpeg_kit_flutter/return_code.dart';


Future<string> compressAudio(String inputPath) async {
 try {
 // ...
 final command = '-y -i "$inputPath" ' // Input file
 '-af "loudnorm=I=-16:TP=-1.5:LRA=11,' // Loudness normalization
 'acompressor=threshold=${_config['threshold_db']}:'
 'ratio=${_config['ratio']}:'
 'attack=${_config['attack']}:'
 'release=${_config['release']},'
 'highpass=f=20,lowpass=f=20000" ' // Audio filters
 '-ar 44100 ' // Sample rate
 '-b:a 128k ' // Bitrate
 '-codec:a libmp3lame ' // MP3 encoder
 '-q:a 2 ' // Quality setting for LAME (0-9, lower is better)
 '-map_metadata 0 ' // Copy metadata
 '"$outputPath"'; // Output file

 // Execute FFmpeg command
 final session = await FFmpegKit.execute(command);
 final returnCode = await session.getReturnCode();
 final logs = await session.getLogs();
 print('FFmpeg logs: $logs');

 if (ReturnCode.isSuccess(returnCode)) {
 return outputFileName;
 } else {
 final logs = await session.getLogs();
 throw Exception(
 'FFmpeg process failed with code $returnCode\nLogs: $logs');
 }
 } catch (e, stackTrace) {
 print('Error: $e');
 print('Stack trace: $stackTrace');
 throw Exception('Failed to compress audio: $e\nStack trace: $stackTrace');
 }
 }
</string>

And I get this error

Error: MissingPluginException(No implementation found for method ffmpegSession on channel flutter.arthenica.com/ffmpeg_kit)

This is the Stacktrace


flutter: Error: MissingPluginException(No implementation found for method ffmpegSession on channel flutter.arthenica.com/ffmpeg_kit)
flutter: Stack trace: #0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:332:7)
<asynchronous suspension="suspension">
#1 AbstractSession.createFFmpegSession (package:ffmpeg_kit_flutter/abstract_session.dart:71:11)
<asynchronous suspension="suspension">
#2 FFmpegSession.create (package:ffmpeg_kit_flutter/ffmpeg_session.dart:40:21)
<asynchronous suspension="suspension">
#3 FFmpegKit.executeWithArguments (package:ffmpeg_kit_flutter/ffmpeg_kit.dart:44:9)
<asynchronous suspension="suspension">
#4 FileProcessor.compressAudio (package:predigt_upload_fl/file.dart:182:23)
<asynchronous suspension="suspension">
#5 _DetailPageState._handleSubmit (package:predigt_upload_fl/GUIs/LiveStreamDetailPage.dart:334:30)
<asynchronous suspension="suspension">


══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════
flutter.arthenica.com/ffmpeg_kit_event)

When the exception was thrown, this was the stack:
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:332:7)
<asynchronous suspension="suspension">
#1 EventChannel.receiveBroadcastStream.<anonymous closure="closure"> (package:flutter/src/services/platform_channel.dart:676:9) 
<asynchronous suspension="suspension">
</asynchronous></anonymous></asynchronous></asynchronous></asynchronous></asynchronous></asynchronous></asynchronous></asynchronous>

And i think this comes from abstract class FFmpegKitPlatform extends PlatformInterface inside ffmpeg_kit_flutter_platform_interface.dart, because in there are a lot of functions that are not Implemented.


This happens not just because of one functions :


// ...
 final logLevel = await _getLogLevel();
 print('logLevel: $logLevel');
 if (logLevel != null) {
 FFmpegKitConfig.setLogLevel(logLevel);
 }
 final version = FFmpegKitFactory.getVersion();
 final platform = await FFmpegKitConfig.getPlatform();
 final arch = await ArchDetect.getArch();
 final packageName = await Packages.getPackageName();
 await FFmpegKitConfig.enableRedirection();
 final isLTSPostfix = (await FFmpegKitConfig.isLTSBuild()) ? "-lts" : "";
 // ...



All of these Functions and more in FFmpegKitInitializer are not Implemented. So im pretty sure im missing something else here than just some outdated Version.


These are my Dependencies :


dependencies:
 flutter:
 sdk: flutter
 path_provider: ^2.0.15
 just_audio: ^0.9.34
 file_picker: ^5.3.1
 path: ^1.8.3
 id3_codec: ^1.0.3
 ftpconnect: ^2.0.5
 http: ^1.1.0
 shared_preferences: ^2.2.0
 html: ^0.15.5
 youtube_explode_dart: ^2.3.9
 intl: ^0.19.0
 ffmpeg_kit_flutter: ^6.0.3


Im pretty new to Flutter Development so Im not quiete sure how to go about this Problem because every other FFmpeg Wrapper also has some problems that i couldnt fix.


If you need any other Information feel free to ask me, because I also dont know what someone would need to go fix the problem.


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