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Autres articles (50)
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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 -
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 -
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 (...)
Sur d’autres sites (7899)
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Xuggler Encoding video of Desktop With Audio - audio has gaps
2 novembre 2012, par ChrisI am using Xuggler to convert images captured from the java Robot class and sound read from TargetDataLine class and encoding this into a video. I am then attempting to http stream this video data (after writing my header) to a flash client via http (Socket OutputStream) but it plays and stutters (never just playing smoothly) no matter what buffer value I use on the client side.
I am asking for help and showing my java code because I suspect it might be to do with how I am encoding the video or something about sending data via http socket which i am not getting..
ByteArrayURLHandler ba = new ByteArrayURLHandler();
final IRational FRAME_RATE = IRational.make(30);
final int SECONDS_TO_RUN_FOR = 20;
final Robot robot = new Robot();
final Toolkit toolkit = Toolkit.getDefaultToolkit();
final Rectangle screenBounds = new Rectangle(toolkit.getScreenSize());
IMediaWriter writer;
writer = ToolFactory.makeWriter(
XugglerIO.map(
XugglerIO.generateUniqueName(out, ".flv"),
out
));
writer.addListener(new MediaListenerAdapter() {
public void onAddStream(IAddStreamEvent event) {
event.getSource().getContainer().setInputBufferLength(1000);
IStreamCoder coder = event.getSource().getContainer().getStream(event.getStreamIndex()).getStreamCoder();
if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO) {
coder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, false);
coder.setBitRate(32000);
System.out.println("onaddstream"+ coder.getPropertyNames().toString());
}
if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
// coder.setBitRate(64000);
// coder.setBitRateTolerance(64000);
}
}
});
writer.addVideoStream(videoStreamIndex, videoStreamId, 1024, 768);
final int channelCount = 1;
int audionumber = writer.addAudioStream(audioStreamIndex, audioStreamId,1, 44100);
int bufferSize = (int)audioFormat.getSampleRate() *audioFormat.getFrameSize();//*6;///6;
byte[] audioBuf;// = new byte[bufferSize];
int i = 0;
final int audioStreamIndex = 1;
final int audioStreamId = 1;
BufferedImage screen, bgrScreen;
long startTime = System.nanoTime();
while(keepGoing)
{
audioBuf = new byte[bufferSize];
i++;
screen = robot.createScreenCapture(screenBounds);
bgrScreen = convertToType(screen, BufferedImage.TYPE_3BYTE_BGR);
long nanoTs = System.nanoTime()-startTime;
writer.encodeVideo(0, bgrScreen, nanoTs, TimeUnit.NANOSECONDS);
audioBuf = new byte[line.available()];
int nBytesRead = line.read(audioBuf, 0, audioBuf.length);
IBuffer iBuf = IBuffer.make(null, audioBuf, 0, nBytesRead);
IAudioSamples smp = IAudioSamples.make(iBuf,1,IAudioSamples.Format.FMT_S16);
if (smp == null) {
return;
}
long numSample = audioBuf.length / smp.getSampleSize();
smp.setComplete(true, numSample,(int)
audioFormat.getSampleRate(), audioFormat.getChannels(),
IAudioSamples.Format.FMT_S16, nanoTs/1000);
writer.encodeAudio(1, smp);
writer.flush();
} -
there is no sound after adding a logo to a video moviepy
1er juin 2021, par NKGI have a video with sound.
Then, using moviepy I am adding a logo.png on the video.
The video with the logo has sound, but when I upload it onto instagram there is no sound(
P.S. the original video uploaded onto the instagram has sound.


there is a code bellow


import moviepy.editor as mp


INPUT_FILE_PATH = rf'input\video.mp4'
OUTPUT_FILE_PATH = rf'output\video.mp4'

video = mp.VideoFileClip(INPUT_FILE_PATH)


logo = (mp.ImageClip("logo.png")
 .set_duration(video.duration)
 .resize(width=width / 3)
 .margin(right=width // 20, top=5 * height // 8, opacity=0) # (optional) logo-border padding
 .set_pos(("right", "top")))

final = mp.CompositeVideoClip([video, logo])


final.write_videofile(OUTPUT_FILE_PATH, fps=30, codec="libx264", audio_fps=22050, audio_bitrate="31k")



Maybe I need add some params to output video, But I don't know what params


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Is it possible for me to put a mask over a transparent image with ffmpeg ?
14 juin 2019, par Pedro ValleI’m trying to make an overlay with a mask over a transparent image with ffmpeg, but the background of the image that gets the mask turns black, is there any way to make this background remain transparent ?
ffmpeg -i background.jpg -loop 1 -i image.png -loop 1 -i mask.png -filter_complex [0]setpts=PTS-STARTPTS,scale=720:720[background];[2]alphaextract,scale=640x320[mask];[1]scale=640x320[image];[image][mask]alphamerge[final_mask];[background][final_mask]overlay=100:100[final] -map [final] -t 00:00:05.000 -y result.mp4
result