Recherche avancée
Médias (1)
-
Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (58)
-
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 -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (8335)
-
Convert all files at once to uncompressed .avi ffmpeg
6 mai 2015, par Alsafi SafiFFmpeg
Please help me to process each using one line of ffmpeg code to convert all files at once to uncompressed .avi files that are at a pixel dimension of 704x480. This codes is working nice, but I faced that. When I type (y). the output file is remove the past file (input _double_high) and create a new one with the same name. The code doesn’t convert all of them. I hope to convert all of them at the same time. Could you help editing this code :
forfiles /p 264s /m *.264 /c "cmd /c ffmpeg -f h264 -i @file -vf scale=704*480 input_double_high.avi" -
issue after video rotation how fix
2 avril 2015, par VahagnI have next code for rotate video
OpenCVFrameConverter.ToIplImage converter2 = new OpenCVFrameConverter.ToIplImage() ;
for (int i = firstIndex; i <= lastIndex; i++) {
long t = timestamps[i % timestamps.length] - startTime;
if (t >= 0) {
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
Frame g = converter2.convert(rotate(converter2.convertToIplImage(images[i % images.length]),9 0));
recorder.record(g);
}
}images[i] - Frame in JavaCV
after in video have green lines
UPDATE
Convertation function/*
* Copyright (C) 2015 Samuel Audet
*
* This file is part of JavaCV.
*
* JavaCV is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version (subject to the "Classpath" exception
* as provided in the LICENSE.txt file that accompanied this code).
*
* JavaCV is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with JavaCV. If not, see /www.gnu.org/licenses/>.
*/
package com.example.vvardanyan.ffmpeg;
import org.bytedeco.javacpp.BytePointer;
import org.bytedeco.javacpp.Pointer;
import java.nio.Buffer;
import static org.bytedeco.javacpp.opencv_core.CV_16S;
import static org.bytedeco.javacpp.opencv_core.CV_16U;
import static org.bytedeco.javacpp.opencv_core.CV_32F;
import static org.bytedeco.javacpp.opencv_core.CV_32S;
import static org.bytedeco.javacpp.opencv_core.CV_64F;
import static org.bytedeco.javacpp.opencv_core.CV_8S;
import static org.bytedeco.javacpp.opencv_core.CV_8U;
import static org.bytedeco.javacpp.opencv_core.CV_MAKETYPE;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_16S;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_16U;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_32F;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_32S;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_64F;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_8S;
import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_8U;
import static org.bytedeco.javacpp.opencv_core.IplImage;
import static org.bytedeco.javacpp.opencv_core.Mat;
/**
* A utility class to map data between {@link Frame} and {@link IplImage} or {@link Mat}.
* Since this is an abstract class, one must choose between two concrete classes:
* {@link ToIplImage} or {@link ToMat}.
*
* @author Samuel Audet
*/
public abstract class OpenCVFrameConverter<f> extends FrameConverter<f> {
IplImage img;
Mat mat;
public static class ToIplImage extends OpenCVFrameConverter<iplimage> {
@Override public IplImage convert(Frame frame) { return convertToIplImage(frame); }
}
public static class ToMat extends OpenCVFrameConverter<mat> {
@Override public Mat convert(Frame frame) { return convertToMat(frame); }
}
public static int getFrameDepth(int depth) {
switch (depth) {
case IPL_DEPTH_8U: case CV_8U: return Frame.DEPTH_UBYTE;
case IPL_DEPTH_8S: case CV_8S: return Frame.DEPTH_BYTE;
case IPL_DEPTH_16U: case CV_16U: return Frame.DEPTH_USHORT;
case IPL_DEPTH_16S: case CV_16S: return Frame.DEPTH_SHORT;
case IPL_DEPTH_32F: case CV_32F: return Frame.DEPTH_FLOAT;
case IPL_DEPTH_32S: case CV_32S: return Frame.DEPTH_INT;
case IPL_DEPTH_64F: case CV_64F: return Frame.DEPTH_DOUBLE;
default: return -1;
}
}
public static int getIplImageDepth(Frame frame) {
switch (frame.imageDepth) {
case Frame.DEPTH_UBYTE: return IPL_DEPTH_8U;
case Frame.DEPTH_BYTE: return IPL_DEPTH_8S;
case Frame.DEPTH_USHORT: return IPL_DEPTH_16U;
case Frame.DEPTH_SHORT: return IPL_DEPTH_16S;
case Frame.DEPTH_FLOAT: return IPL_DEPTH_32F;
case Frame.DEPTH_INT: return IPL_DEPTH_32S;
case Frame.DEPTH_DOUBLE: return IPL_DEPTH_64F;
default: return -1;
}
}
static boolean isEqual(Frame frame, IplImage img) {
return img != null && frame != null && frame.image != null && frame.image.length > 0
&& frame.imageWidth == img.width() && frame.imageHeight == img.height()
&& frame.imageChannels == img.nChannels() && getIplImageDepth(frame) == img.depth()
&& new Pointer(frame.image[0]).address() == img.imageData().address()
&& frame.imageStride * Math.abs(frame.imageDepth) / 8 == img.widthStep();
}
public IplImage convertToIplImage(Frame frame) {
if (frame == null) {
return null;
} else if (frame.opaque instanceof IplImage) {
return (IplImage)frame.opaque;
} else if (!isEqual(frame, img)) {
int depth = getIplImageDepth(frame);
img = depth < 0 ? null : IplImage.createHeader(frame.imageWidth, frame.imageHeight, depth, frame.imageChannels)
.imageData(new BytePointer(new Pointer(frame.image[0].position(0)))).widthStep(frame.imageStride * Math.abs(frame.imageDepth) / 8);
}
return img;
}
public Frame convert(IplImage img) {
if (img == null) {
return null;
} else if (!isEqual(frame, img)) {
frame = new Frame();
frame.imageWidth = img.width();
frame.imageHeight = img.height();
frame.imageDepth = getFrameDepth(img.depth());
frame.imageChannels = img.nChannels();
frame.imageStride = img.widthStep() * 8 / Math.abs(frame.imageDepth);
frame.image = new Buffer[] { img.createBuffer() };
frame.opaque = img;
}
return frame;
}
public static int getMatDepth(Frame frame) {
switch (frame.imageDepth) {
case Frame.DEPTH_UBYTE: return CV_8U;
case Frame.DEPTH_BYTE: return CV_8S;
case Frame.DEPTH_USHORT: return CV_16U;
case Frame.DEPTH_SHORT: return CV_16S;
case Frame.DEPTH_FLOAT: return CV_32F;
case Frame.DEPTH_INT: return CV_32S;
case Frame.DEPTH_DOUBLE: return CV_64F;
default: return -1;
}
}
static boolean isEqual(Frame frame, Mat mat) {
return mat != null && frame != null && frame.image != null && frame.image.length > 0
&& frame.imageWidth == mat.cols() && frame.imageHeight == mat.rows()
&& frame.imageChannels == mat.channels() && getMatDepth(frame) == mat.depth()
&& new Pointer(frame.image[0]).address() == mat.data().address()
&& frame.imageStride * Math.abs(frame.imageDepth) / 8 == (int)mat.step();
}
public Mat convertToMat(Frame frame) {
if (frame == null) {
return null;
} else if (frame.opaque instanceof Mat) {
return (Mat)frame.opaque;
} else if (!isEqual(frame, mat)) {
int depth = getMatDepth(frame);
mat = depth < 0 ? null : new Mat(frame.imageHeight, frame.imageWidth, CV_MAKETYPE(depth, frame.imageChannels),
new Pointer(frame.image[0].position(0)), frame.imageStride * Math.abs(frame.imageDepth) / 8);
}
return mat;
}
public Frame convert(Mat mat) {
if (mat == null) {
return null;
} else if (!isEqual(frame, mat)) {
frame = new Frame();
frame.imageWidth = mat.cols();
frame.imageHeight = mat.rows();
frame.imageDepth = getFrameDepth(mat.depth());
frame.imageChannels = mat.channels();
frame.imageStride = (int)mat.step() * 8 / Math.abs(frame.imageDepth);
frame.image = new Buffer[] { mat.createBuffer() };
frame.opaque = mat;
}
return frame;
}
}
</mat></iplimage></f></f> -
Cannot read xvid video with opencv in python on mac
15 février 2017, par crazjoI have been trying for hours to read a xvid .avi file on my mac with python 2.7 and opencv. I have installed all the latest versions using brew and opencv is working in python and I can open images and other movie files but when I try to read a xvid avi file with
cap.cv2.VideoCapture('video.AVI')
ret, frame = cap.read()It fails as frame is empty. I have installed ffmpeg with brew and x264 as well and ran brew doctor. I am totally lost what to do now. Happy to provide more information if needed. I hope someone can help me, thanks.
Syndiquer tout le site
