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Médias (1)
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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (44)
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Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...) -
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 (13205)
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VideoCapture always returns False in Python OPENCV [Linux]
7 avril 2017, par Daniyal ShahrokhianEvery time that I use VideoCapture trying to access the frames from a video file, the return value (
ret
) is false. See the sample code below :cap = cv2.VideoCapture('asd.mkv')
vid = []
while True:
ret, img = cap.read()
if not ret: # Always happens
break
vid.append(cv2.resize(img, (171, 128)))I have already tried absolutely everything I could find today by googling, including the OpenCV guide and this long issue on Github. Also, I read some solutions involving moving ffmpeg dll files, but that only was in the case of Windows.
Any ideas ? Because I defenitely ran out of them.
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doc/muxers/hls : change "can used" to "can be used"
2 janvier 2014, par Stefano Sabatini -
What causes "double free or corruption" and "invalid pointer" in javacpp - ffmpeg ?
7 septembre 2016, par Jiro MatchonsonI use https://github.com/bytedeco/javacpp-presets/tree/master/ffmpeg
<dependency>
<groupid>org.bytedeco.javacpp-presets</groupid>
<artifactid>ffmpeg</artifactid>
<version>3.1.2-1.2</version>
</dependency>When i am calling avformat_open_input/avformat_close_input i randomly (never at first call) get those errors :
Error in `/usr/lib/jvm/java-8-oracle/bin/java': double free or corruption (out): 0x00007fe79c194aa0
or
Error in `/usr/lib/jvm/java-8-oracle/bin/java': double free or corruption (!prev): 0x00007fe51c3ffb60
or
Error in `/usr/lib/jvm/java-8-oracle/bin/java': double free or corruption (fasttop): 0x00007fcdc40fe4a0
I cant find out how to solve this, please help.
There is my implementation :
private static void registerComponents() {
if (!componentsRegistered) {
componentsRegistered = true;
av_register_all();
}
}
public static void decodeFrame(ByteBuffer frameData) {
registerComponents();
AVFormatContext pFormatCtx = avformat_alloc_context();
int i, videoStream;
AVCodecContext pCodecCtx = null;
AVCodec pCodec = null;
AVFrame pFrame = null;
AVFrame pFrameRGB = null;
int[] frameFinished = new int[1];
int numBytes;
BytePointer buffer = null;
AVDictionary optionsDict = null;
SwsContext sws_ctx = null;
AVIOContext ioContext = avio_alloc_context(new BytePointer(frameData), frameData.capacity(), 0, null, null, null, null);
pFormatCtx.pb(ioContext);
if (avformat_open_input(pFormatCtx, "", null, null) < 0) {
logger.error(MarkerFactory.getMarker("ffmpeg"), "Problem with load video from memory.");
return;
}
avformat_close_input(pFormatCtx);
}