Recherche avancée
Médias (3)
-
Elephants Dream - Cover of the soundtrack
17 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
-
Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
-
Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (96)
-
Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...) -
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" -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (9512)
-
ffmpeg ProcessBuilder No such file or directory
24 avril 2020, par silentsudoI am trying to get media duration using ffmpeg command from a java program. I am calling this method from within spring boot application.
I am using
ProcessBuilder.


File object is valid and exists for privacy I have replaced file path in error logs.



My Code is as below :



private String getMediaDuration(File file) {
 final String command = "/usr/bin/ffmpeg -version";//-i " + file.getAbsolutePath() + " 2>&1 | grep Duration | cut -c 13-20";
 try {
 ProcessBuilder builder = new ProcessBuilder("/usr/bin/ffmpeg",
 "-version");
 builder.directory(file.getParentFile());

 System.out.println("Directory : " + builder.directory().exists());
 System.out.println("Directory : " + builder.directory().getAbsolutePath());
 final Process process = builder.start();
 final InputStream is = process.getInputStream();
 final InputStreamReader isr = new InputStreamReader(is);
 final BufferedReader br = new BufferedReader(isr);
 String line;
 while ((line = br.readLine()) != null) {
 System.out.println(line);
 }
 return line;
 } catch (Exception e) {
 e.printStackTrace();
 }
 return null;
 }



Unfortunately nothing seems to be working
Error below :



java.io.IOException: Cannot run program "/usr/bin/ffmpeg -version" (in directory "/abc/xyz"): error=2, No such file or directory
 at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
 at ....getMediaDuration(FFmpegRunner.java:208)
 at ....ffmpegprocessor.FFmpegRunner.run(FFmpegRunner.java:61)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: error=2, No such file or directory
 at java.lang.UNIXProcess.forkAndExec(Native Method)
 at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
 at java.lang.ProcessImpl.start(ProcessImpl.java:134)
 at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
 ... 5 more
</init>


Output for
whereis ffmpeg


ffmpeg: /usr/bin/ffmpeg /usr/share/ffmpeg /usr/share/man/man1/ffmpeg.1.gz



Please help me understand where it is going wrong. Thank you.


-
How to speed up my video creating/encoding pipeline
23 septembre 2015, par user606521I am creating a video from 120 JPEG images and concatening it with intro video.
- video (and images) dimmensions : 960x540
- video/audio output format that I need : mp4 H.264, AAC
I am creating video from JPEG images using following command :
ffmpeg -f lavfi -i anullsrc -r 60 -i pipe:0 -y -acodec aac -strict experimental \
-shortest -movflags frag_keyframe+empty_moov -f mp4 video.mp4It creates 2 seconds (120 frames with 60FPS) mp4 video with "silence" (silent audio). video.mp4 size is 94KB. This process takes 1 second. (Note that I am passing images through pipe:0).
Next I concatenate it with existing intro.mp4 video (H.264, AAC, 931KB, lasts 6 seconds) using following command :
ffmpeg -i intro.mp4 -i video.mp4 -y \
-filter_complex "[0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" -acodec aac -strict experimental \
-movflags frag_keyframe+empty_moov -f mp4 final.mp4It creates final mp4 H.254, AAC video which lasts 2 + 6 = 8 seconds and it’s size 990KB. This process takes 3.5 seconds.
So the whole process takes 5.5 seconds on my Mac. I have to speed it up, especially concatening videos. I am not familiar with video encoding and video formats, but I thought that maybe creating first video in mp4 and then concatening it with another mp4 video is not efficient. Are there any other formats in which I could create video (and intro) that will be faster to create/concatenate so I could encode only final video as mp4 ?
For example I could create
video.<format></format>, concatenate it withintro.<format></format>and finally encode it asfinal.mp4.Use case : I have to create videos in almost real time. 5.5 secs is ok on my Mac, but I have to execute my app on a weaker machine on which this process currently takes 3 + 15 = 18 seconds.
Also maybe there are some cool flags I could pass to ffmpeg to make it faster ?
-
Reddit api only giving video and not its audio
25 mars 2023, par Rudra SharmaI am using Reddit API to play videos on my app but the audio is not playing with the video.


This is my code. I am using chewie package and I have no idea if the problem is in the player or Reddit Api. Also I am new to flutter. The code plays reddit videos on my app on chewie video player.


Future<void> _loadVideos() async {
 try {
 final videoUrls =
 await RedditApi.getVideoUrlsFromSubreddit('IndianDankMemes');

 setState(() {
 _videoUrls.addAll(videoUrls);
 });
 } catch (e) {
 print(e);
 }
 }

 Widget _buildVideosList() {
 return ListView.builder(
 itemCount: _videoUrls.length,
 itemBuilder: (context, index) {
 return Padding(
 padding: const EdgeInsets.all(8.0),
 child: Chewie(
 controller: ChewieController(
 videoPlayerController: VideoPlayerController.network(
 _videoUrls[index],
 ),
 aspectRatio: 9 / 16,
 autoPlay: true,
 looping: true,
 autoInitialize: true,
 ),
 ),
 );
 },
 );
 }
}

class RedditApi {
 static const String BASE_URL = 'https://www.reddit.com';
 static const String CLIENT_ID = 'my client id';
 static const String CLIENT_SECRET = 'my client secret';

 static Future> getVideoUrlsFromSubreddit(
 String subredditName) async {
 final response = await http.get(
 Uri.parse('$BASE_URL/r/$subredditName/top.json?limit=10'),
 headers: {'Authorization': 'Client-ID $CLIENT_ID'});

 if (response.statusCode == 200) {
 final jsonData = jsonDecode(response.body);
 final postsData = jsonData['data']['children'];

 final videoUrls = <string>[];

 for (var postData in postsData) {
 if (postData['data']['is_video']) {
 videoUrls.add(postData['data']['media']['reddit_video']
 ['fallback_url']);
 }
 }

 return videoUrls;
 } else {
 throw Exception("Failed to load videos from subreddit");
 }
 }
}```

If you are suggesting for ffmpeg please give me code as well as I said I am new to flutter. 

I have checked my client id and client secret is correct as well. Also if there is any other package I can add to make the task easy.

</string></void>

Syndiquer tout le site
