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Médias (1)
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SWFUpload Process
6 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
Autres articles (16)
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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 -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (3237)
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ffmpeg cut video and burn subtitle in a single command
3 janvier 2020, par razvanI want to cut a piece out of a video and burn subtitle in that piece.
I can do this in 3 steps :
-
cut the video
ffmpeg -ss 25:00 -to 26:00 -i vid.mp4 -c copy out.mp4 -
cut the subtitle
ffmpeg -i sub.srt -ss 25:00 -to 26:00 out.srt -
burn subtitle in the video piece
ffmpeg -i out.mp4 -vf subtitles=out.srt -c:a copy -y final.mp4
But I want to do this in a single ffmpeg command.
If I do this
ffmpeg -ss 25:00 -to 26:00 -i vid.mp4 -vf subtitles=sub.srt -c:a copy -y final.mp4
the video is cut but no subtitle is burned into it.
This is fast.If I do this
ffmpeg -i vid.mp4 -ss 25:00 -to 26:00 -vf subtitles=sub.srt -c:a copy -y final.mp4
the video is cut and subtitles burned correctly,but there is a delay in starting writing the final.mp4.
I think ffmpeg is processing vid.mp4 from the beginning till it reach the-sstime (and drop that part)
then continue processing and writing it to final.mp4Is there a way to do this fast and in a single ffmpeg command ?
Like ffmpeg going directly to-sstime and cut that, process it, burn subtitle in it.Thanks
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Is there a way to horizontal flip video captured from flutter front camera
5 mai 2024, par JoyJoyBasically, I'm trying to flip video horizontally after capturing it from flutter front camera. So I start recording, stop recording, flip the video and pass it to another page. I'm fairly new and would appreciate any assistance as my code isn't working


I've tried doing so using the new ffmpeg_kit flutter


Future<void> flipVideo(String inputPath, String outputPath) async{
final ffmpegCommand = "-i $inputPath -vf hflip $outputPath";
final session = FFmpegKit.executeAsync(ffmpegCommand);
await session.then((session) async {
 final returnCode = await session.getReturnCode();
 if (ReturnCode.isSuccess(returnCode)) {
 print('Video flipping successful');
 } else {
 print('Video flipping failed: ${session.getAllLogs()}');
 }
});}

void stopVideoRecording() async {
XFile videopath = await cameraController.stopVideoRecording();

try {
 final Directory appDocDir = await 
 getApplicationDocumentsDirectory();
 final String outputDirectory = appDocDir.path;
 final String timeStamp = DateTime.now().millisecondsSinceEpoch.toString();
 final String outputPath = '$outputDirectory/flipped_video_$timeStamp.mp4';

 await flipVideo(videopath.path, outputPath);

 // Once completed,
 Navigator.push(
 context,
 MaterialPageRoute(
 builder: (builder) => VideoViewPage(
 path: File(outputPath),
 fromFrontCamera: iscamerafront,
 flash: flash,
 )));
 print('Video flipping completed');
} catch (e) {
 print('Error flipping video: $e');
}
</void>

}


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In Flutter, how to get image pixel
12 janvier 2024, par Pianonemy code here


var response = await Dio().get(
 url,
 options: Options(responseType: ResponseType.bytes)
);
Uint8List? srcImage = Uint8List.fromList(response.data);
Uint8List? watermark = await captureWaterMark();
Image i = Image.memory(srcImage!);
//how can I get the pixel (Image i) such like 1920*1080 or just width/hight pixel
...tell me how to do...
srcImage = await addWaterMarkByFfmpegCommand(srcImage, watermark);
 final result = await ImageGallerySaver.saveImage(
 srcImage!, name: name,
 );


i need get the pic pixel so that i can use it in ffmpeg command, it a func that add a watermark into srcImage, but cause their pixel ratio too diff to adapted watermark


i try to get pixel from ffmpeg... but i failed


/// addWaterMark by using ffmpeg Command
Future addWaterMarkByFfmpegCommand(Uint8List srcImg, Uint8List watermark) async {
 try {
 final Directory tempDir = await Directory.systemTemp.createTemp();
 final File image1File = File('${tempDir.path}/srcImg.jpg');
 await image1File.writeAsBytes(srcImg);
 final File image2File = File('${tempDir.path}/watermark.png');
 await image2File.writeAsBytes(watermark);

 final String outputFilePath = '${tempDir.path}/output.jpg';
 //when i get srcImage pixel, the positions in bold(iw*1) in the following commands will be replaced to make watermark adapted
 final String command =
 '-i ${image1File.path} -i ${image2File.path} -filter_complex "[1:v]scale=**iw*1**:-1[v1];[0:v][v1]overlay=10:10" -frames:v 1 $outputFilePath';
 await FFmpegKit.execute(command);

 final File outputFile = File(outputFilePath);
 final Uint8List outputBytes = await outputFile.readAsBytes();
 return outputBytes;
 } catch (e) {
 print('Error executing ffmpeg command: $e');
 }
 return null;
}


ps : i am new to flutter and ffmpeg, plz help me, I'd appreciate, thanks alot


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