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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
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Podcasting Legal guide
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Mis à jour : Mai 2011
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Autres articles (45)
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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 des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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D’autres logiciels intéressants
12 avril 2011, parOn ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
Videopress
Site Internet : (...)
Sur d’autres sites (6822)
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Merging audio(aac) and video (h.264 in mp4 container) into a mp4 container using Xuggler
26 août 2016, par HandroidHere is the code I am using
String filenamevideo = videoFilePath;(video.mp4)
String filenameaudio = audioAACFilePath; (audio.aac)
IMediaWriter mWriter = ToolFactory.makeWriter(videoWithAudioFilePath); // output
// file
IContainer containerVideo = IContainer.make();
IContainer containerAudio = IContainer.make();
if (containerVideo.open(filenamevideo, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenamevideo);
if (containerAudio.open(filenameaudio, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenameaudio);
int numStreamVideo = containerVideo.getNumStreams();
int numStreamAudio = containerAudio.getNumStreams();
int videostreamt = -1; // this is the video stream id
int audiostreamt = -1;
IStreamCoder videocoder = null;
for (int i = 0; i < numStreamVideo; i++) {
IStream stream = containerVideo.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if (code.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
videostreamt = i;
videocoder = code;
break;
}
}
for (int i = 0; i < numStreamAudio; i++) {
IStream stream = containerAudio.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if (code.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO) {
audiostreamt = i;
break;
}
}
if (videostreamt == -1)
throw new RuntimeException("No video steam found");
if (audiostreamt == -1)
throw new RuntimeException("No audio steam found");
if (videocoder.open() < 0)
throw new RuntimeException("Cant open video coder");
IPacket packetvideo = IPacket.make();
IStreamCoder audioCoder = containerAudio.getStream(audiostreamt).getStreamCoder();
if (audioCoder.open() < 0)
throw new RuntimeException("Cant open audio coder");
mWriter.addAudioStream(0, 0, ICodec.ID.CODEC_ID_AAC, audioCoder.getChannels(),audioCoder.getSampleRate());
mWriter.addVideoStream(1, 0, ICodec.ID.CODEC_ID_H264, videocoder.getWidth(), videocoder.getHeight());
IPacket packetaudio = IPacket.make();
while (containerVideo.readNextPacket(packetvideo) >= 0 || containerAudio.readNextPacket(packetaudio) >= 0) {
if (packetvideo.getStreamIndex() == videostreamt) {
// video packet
IVideoPicture picture = IVideoPicture.make(videocoder.getPixelType(), videocoder.getWidth(),
videocoder.getHeight());
int offset = 0;
while (offset < packetvideo.getSize()) {
int bytesDecoded = videocoder.decodeVideo(picture, packetvideo, offset);
if (bytesDecoded < 0)
throw new RuntimeException("bytesDecoded not working");
offset += bytesDecoded;
if (picture.isComplete()) {
// System.out.println(picture.getPixelType());
mWriter.encodeVideo(1, picture);
}
}
}
if (packetaudio.getStreamIndex() == audiostreamt) {
// audio packet
IAudioSamples samples = IAudioSamples.make(512, audioCoder.getChannels(), IAudioSamples.Format.FMT_S32);
int offset = 0;
while (offset < packetaudio.getSize()) {
int bytesDecodedaudio = audioCoder.decodeAudio(samples, packetaudio, offset);
if (bytesDecodedaudio < 0)
throw new RuntimeException("could not detect audio");
offset += bytesDecodedaudio;
if (samples.isComplete()) {
mWriter.encodeAudio(0, samples);
}
}
}
}The output file (mp4) is generating , but unable to play it using (vlc) and in JavaFX scene media.
Please help me with the inputs on the above code I’m using it in a correct way (Or) help me with the possible solution for merging audio(aac) and video(h264) to mp4 container.
Thank in advance.
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cv2.VideoCapture on python
27 décembre 2015, par pandasarebestI am running the following code :
import numpy as np
import cv2
import os
count = 0
cap = cv2.VideoCapture("/home/simon/PROJECT/real_data/00000020.mp4")
while not cap.isOpened():
cap = cv2.VideoCapture("./00000020.mp4")
cv2.waitKey(1000)
print "Wait for the header"
pos_frame = cap.get(cv2.cv.CV_CAP_PROP_POS_FRAMES)
while True:
flag, frame = cap.read()
if flag:
# The frame is ready and already captured
cv2.imshow('video', frame)
pos_frame = cap.get(cv2.cv.CV_CAP_PROP_POS_FRAMES)
print str(pos_frame)+" frames"
else:
# The next frame is not ready, so we try to read it again
cap.set(cv2.cv.CV_CAP_PROP_POS_FRAMES, pos_frame-1)
print "frame is not ready"
# It is better to wait for a while for the next frame to be ready
cv2.waitKey(1000)
if cv2.waitKey(10) & 0xFF == 27:
break
if cap.get(cv2.cv.CV_CAP_PROP_POS_FRAMES) == cap.get(cv2.cv.CV_CAP_PROP_FRAME_COUNT):
# If the number of captured frames is equal to the total number of frames,
# we stop
break
if ret == True:
frame = cv2.VideoCapture.grab()
frame = 'frame%d' % count
cv2.imwrite('frame%d.png', frame)
count += 1
else:
print 'stopped at' + count
breakAnd whenever I run it, it loops on the while not loop, printing "wait for header".
There is never an error code or anything like that either.I have tried to run it as a more simple piece of code, where it doesnt have all these checks, and again that doesn’t throw any errors.
I am attempting to run this code to open a video, and then save the frames as png files throughout the video.
Does anyone spot any particular problems with the code ?
Or alternatively does anyone know a piece of code that would do what i want more efficiently, as I have trawled through google searches and stack overflow a lot recently and haven’t found anythingThanks in advance
Panda -
Mixing audio(aac) and video (h.264 in mp4 container) and write to mp4 container using Xuggler
25 novembre 2015, par HandroidHere is the code I am using
String filenamevideo = videoFilePath;(video.mp4)
String filenameaudio = audioAACFilePath; (audio.aac)
IMediaWriter mWriter = ToolFactory.makeWriter(videoWithAudioFilePath); // output
// file
IContainer containerVideo = IContainer.make();
IContainer containerAudio = IContainer.make();
if (containerVideo.open(filenamevideo, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenamevideo);
if (containerAudio.open(filenameaudio, IContainer.Type.READ, null) < 0)
throw new IllegalArgumentException("Cant find " + filenameaudio);
int numStreamVideo = containerVideo.getNumStreams();
int numStreamAudio = containerAudio.getNumStreams();
int videostreamt = -1; // this is the video stream id
int audiostreamt = -1;
IStreamCoder videocoder = null;
for (int i = 0; i < numStreamVideo; i++) {
IStream stream = containerVideo.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if (code.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
videostreamt = i;
videocoder = code;
break;
}
}
for (int i = 0; i < numStreamAudio; i++) {
IStream stream = containerAudio.getStream(i);
IStreamCoder code = stream.getStreamCoder();
if (code.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO) {
audiostreamt = i;
break;
}
}
if (videostreamt == -1)
throw new RuntimeException("No video steam found");
if (audiostreamt == -1)
throw new RuntimeException("No audio steam found");
if (videocoder.open() < 0)
throw new RuntimeException("Cant open video coder");
IPacket packetvideo = IPacket.make();
IStreamCoder audioCoder = containerAudio.getStream(audiostreamt).getStreamCoder();
if (audioCoder.open() < 0)
throw new RuntimeException("Cant open audio coder");
mWriter.addAudioStream(0, 0, ICodec.ID.CODEC_ID_AAC, audioCoder.getChannels(),audioCoder.getSampleRate());
mWriter.addVideoStream(1, 0, ICodec.ID.CODEC_ID_H264, videocoder.getWidth(), videocoder.getHeight());
IPacket packetaudio = IPacket.make();
while (containerVideo.readNextPacket(packetvideo) >= 0 || containerAudio.readNextPacket(packetaudio) >= 0) {
if (packetvideo.getStreamIndex() == videostreamt) {
// video packet
IVideoPicture picture = IVideoPicture.make(videocoder.getPixelType(), videocoder.getWidth(),
videocoder.getHeight());
int offset = 0;
while (offset < packetvideo.getSize()) {
int bytesDecoded = videocoder.decodeVideo(picture, packetvideo, offset);
if (bytesDecoded < 0)
throw new RuntimeException("bytesDecoded not working");
offset += bytesDecoded;
if (picture.isComplete()) {
// System.out.println(picture.getPixelType());
mWriter.encodeVideo(1, picture);
}
}
}
if (packetaudio.getStreamIndex() == audiostreamt) {
// audio packet
IAudioSamples samples = IAudioSamples.make(512, audioCoder.getChannels(), IAudioSamples.Format.FMT_S32);
int offset = 0;
while (offset < packetaudio.getSize()) {
int bytesDecodedaudio = audioCoder.decodeAudio(samples, packetaudio, offset);
if (bytesDecodedaudio < 0)
throw new RuntimeException("could not detect audio");
offset += bytesDecodedaudio;
if (samples.isComplete()) {
mWriter.encodeAudio(0, samples);
}
}
}
}The output file (mp4) is generating , but unable to play it using (vlc) and in JavaFX scene media.
Please help me with the inputs on the above code I’m using it in a correct way (Or) help me with the possible solution for mixing audio(aac) and video(h264) to mp4 container.
Thank in advance.