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Autres articles (94)
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Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
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 -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
Sur d’autres sites (5283)
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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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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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Overlay a video with rounded corners - FFMPEG React Native (Like Facetime or other Video Chats)
25 février 2024, par Christopher GabbaI'm trying to overlay one video on top of another using FFMPEG, in the exact same format as FaceTime, but the video would have rounded corners. I've tried the commands on other posts but they all generate unexpected results or errors.


Here is the command that overlays the videos decently :


-i main_video.mp4 -i small_overlaid_video_in_lower_left_corner.mp4 -filter_complex \
 "[0:v]scale=iw:ih[main_scaled]; \
 [1:v]scale=iw/2:ih/2:force_original_aspect_ratio=decrease,format=yuva420p[reaction_resized]; \
 [main_scaled][reaction_resized]overlay=x=40:y=H-h-40:format=auto[final]" \
 -map "[final]" -map 1:a? -c:a copy -c:v libx264 -crf 18 -preset ultrafast -t -y output.mp4



The problems this has is that the main videos resolution varies from video to video, so sometimes the overlaid video is super small and sometimes its too big. Three questions :


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- How do I make the overlaid video the same size in comparison to the main video every time ?
- How can I apply rounded corners on the rectangle ?
- How can I modify it to include both video's audio ?