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Médias (3)
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Elephants Dream - Cover of the soundtrack
17 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (55)
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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 (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (5593)
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Flutter video_compress and then ffmpeg trim video to 30s fails with endless logs
7 mars 2021, par Charles BassI am trying to make a simple app in Flutter. A user can either take or pick a video and then upload it. However, I wanted to compress the video for storage purposes on firebase storage, and also trim it to only get the first 30 seconds.


I am facing a very puzzling problem. I am able to compress the video, but with the resultant file, FFmpeg fails to trim it and I get endless logs which result in me having to stop the app and re-run. Alternatively, I am able to trim the video, but with the resultant file, I am unable to compress it getting the error :
Failed to open file '/data/user/0/live.roots.roots/app_flutter/TRIMMED.mp4'. (No such file or directory) PlatformException(error, java.io.IOException: Failed to instantiate extractor., null, java.lang.RuntimeException: java.io.IOException: Failed to instantiate extractor.

This is my code below :




//! function that controls file compression and trimming
static Future<file> compressFile(File file) async {
 print('[COMPRESSING FILE]');

 String mimeStr = lookupMimeType(file.path);
 var fileType = mimeStr.split('/');

 if (fileType.contains("image")) {
 print('[COMPRESSING FILE] - file is image');
 String tempPath = (await getTemporaryDirectory()).path;
 String targetPath = '$tempPath/${DateTime.now().toIso8601String()}.jpg';
 return await compressImageAndGetFile(file, targetPath);
 } else {
 print('[COMPRESSING FILE] - file is video');

 final compressedVideoFile = await compressVideoAndGetFile(file);
 print('[VIDEO FILE COMPRESSED]');
 return await trimVideoGetFile(compressedVideoFile);
 }
 }
 
 
//! function to compress video
static Future<file> compressVideoAndGetFile(File file) async {
 print('[COMPRESSING VIDEO]');

 var result = await VideoCompress.compressVideo(
 file.absolute.path,
 quality: VideoQuality.DefaultQuality,
 deleteOrigin: true,
 );

 print('[COMPRESSED VIDEO TO]: ${result.file.path}');

 return result.file;
 }
 
//! function to trim video
static Future<file> trimVideoGetFile(File file) async {
 print('[TRIMMING VIDEO]');

 Directory appDocumentDir = await getApplicationDocumentsDirectory();
 String rawDocumentPath = appDocumentDir.path;
 String outputPath = rawDocumentPath + "/TRIMMED.mp4";

 final newFile = File(outputPath);

 if (await newFile.exists()) {
 await newFile.delete();
 }

 _flutterFFmpeg
 .execute(
 "-ss 00:00:00 -i ${file.path} -to 00:00:30 -c copy $outputPath")
 .then((rt) async {
 print('[TRIMMED VIDEO RESULT] : $rt');
 if (rt == -1) {
 throw Exception("Something went wrong when trimming the video");
 }
 });

 return File(outputPath);
 }</file></file></file>






Thank you in advance


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avcodec/opus : Check count of ambisonic channels
17 février 2017, par Michael Niedermayeravcodec/opus : Check count of ambisonic channels
https://tools.ietf.org/html/draft-ietf-codec-ambisonics-01#section-3.1
specifies the maximum as 227Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
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Using ffmpeg to stream to Facebook Live Video : can preview, but not go live
17 novembre 2016, par Einar MagnússonI am trying to stream a webpage to Facebook Live video using ffmpeg. I know I can use OBS, but I’m trying to do it from a server, so I can’t go with OBS. It works fine when I’m previewing, but as soon as I press ’Go live’, at first it seems like it’s starting, but then when it takes me to the live view it just says that the video has ended. I even checked the error of the video log using Graph API, nothing. I’m using PhantomJS to pipe screenshots to ffmpeg :
phantomjs phantom.js | ffmpeg -y -c:v mjpeg \
-f image2pipe \
-r 5 -i \
- -c:v libx264 \
-x264-params keyint=5 \
-b:v 1000k -minrate 1000k -maxrate 1000k -bufsize 500k \
-f flv 'rtmp://rtmp-api.facebook.com:80/rtmp/xxxxxxxxxxxxxxxx'As I said, it’s working fine in the preview of the live stream on Facebook, but just ends immediately when I go live. I added the bitrate options to try to keep a constant bitrate as mandated by Facebook (https://developers.facebook.com/docs/videos/live-video/production-broadcasts), and I have a keyframe every 5 frames (rather low frame rate at 5fps) so that requirement is fulfilled as well.
I’m not sending any audio, could that cause a problem ?
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