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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (64)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
XMP PHP
13 mai 2011, parDixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)
Sur d’autres sites (5865)
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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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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.
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NodeJS - FFmpeg : Extract Frame from Video stdin stream (EPIPE write Error)
3 avril 2022, par ManiBI want to pipe an input steam (video) (should later be an http stream) to ffmpeg child process to extract an thumbnail :


require("stream").pipeline(
 require("fs").createReadStream("files/myVideo.mp4"),
 require("child_process").spawn("ffmpeg", ["-i", "-", "-ss", "00:00:01", "-frames:v", "1", "-y", "files/myImage.jpeg"]).stdin,
 (err) => console.log("Done", err)
);



So far so good, I get an extracted Image, but also an Error :


Error: write EPIPE
 at WriteWrap.onWriteComplete [as oncomplete] (node:internal/stream_base_commons:94:16) {
 errno: -32,
 code: 'EPIPE',
 syscall: 'write'
}



Converting full videos (e.g. mp4 -> mkv) works without errors.


My suggestion is, FFmpeg will close stdin too early (because image is already found on first second) and readable-stream is not able to write to stdin anymore.


How can I manage, to fix the error and gracefully close all streams ?


System :


- 

- Linux Centos 7 (also tried Windows Server 1809)
- NodeJS v16.14.1 (Windows v16.13.0)
- FFmpeg v4.4.1-static (Windows v4.4-full_build-www.gyan.dev)