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Autres articles (28)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...) -
MediaSPIP Player : les contrôles
26 mai 2010, parLes contrôles à la souris du lecteur
En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...) -
L’utiliser, en parler, le critiquer
10 avril 2011La première attitude à adopter est d’en parler, soit directement avec les personnes impliquées dans son développement, soit autour de vous pour convaincre de nouvelles personnes à l’utiliser.
Plus la communauté sera nombreuse et plus les évolutions seront rapides ...
Une liste de discussion est disponible pour tout échange entre utilisateurs.
Sur d’autres sites (4315)
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How to scale video in front of image using ffmpeg ? [closed]
29 juillet 2022, par NigrimmistWhat i have :


png picture dem.png (not transparent) and video cat.mp4


Current result :




by executing :


ffmpeg -i cat.mp4 -framerate 30 -i dem.png -filter_complex "[1][0]overlay=x=100:y=100" -c:a copy -movflags +faststart out2.mp4


How can i scale mp4 in case i know paddings/required height/width of scaled mp4 here ?


Very beginner in ffmpeg. I know, i need to use
scaleparam, but can't understand how to do it with my current ffmpeg command.

Maybe someone know how to do it ?


Files are here if you need : https://drive.google.com/drive/folders/1gKJCyVU0IgJ8g3zWFhCA-L93lDOWyOS-?usp=sharing


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FFmpeg : move moov atom of stream to front without writing a new file
5 juillet 2023, par OGreeniI'm trying to extract a thumbnail image from an input stream with FFmpeg and send the result to stdout. I've been using this command :
ffmpeg -i - -ss 00:00:01.000 -vframes 1 -c:v png -f image2pipe -. This works fine when the input has a.mp4container, but not for.mov. I'm getting an "unspecified pixel format" error.

After moving the moov atom to the front of the file with this command :
ffmpeg -i - -c:a copy -c:v copy -movflags faststart output.mov, and then piping the file to the previous command, everything works. However, I would like to do this without writing a file to disk. The commandffmpeg -i - -c:a copy -c:v copy -movflags faststart -f mov -fails to initialize the output stream because muxer does not support non-seekable output.

Is there a way to do this without writing a new file, perhaps by using an intermediate buffer ? I'm quite new to FFmpeg, so I might be missing something with my approach.


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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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