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Médias (1)
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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (74)
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Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
Sur d’autres sites (7577)
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FFMpegCore .Net cuts off the fist few ( 1.5) seconds of audio
28 mai 2024, par TimI want to use FFMpegCore to convert some audio files to raw pcm. I noticed that this always cuts off 1.5 seconds of my audio from the start. I check my input stream, saved it to HD all good. If use it from cli with the same arguments everything seem fine. I tried -ss 0, no luck. This behavior is observed with .wav (RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 44100 Hz), same issue with different sample rate. I tested mp3 works fine.


public async Task<memorystream> ConvertToPcmStreamAsync(Stream inputStream)
{
 var outputStream = new MemoryStream();
 
 var audioInput = new StreamPipeSource(inputStream);
 var audioOutput = new StreamPipeSink(outputStream);

 await FFMpegArguments
 .FromPipeInput(audioInput)
 .OutputToPipe(audioOutput, options => options
 .WithCustomArgument("-ss 0 -f s16le -acodec pcm_s16le -ac 1"))
 .ProcessAsynchronously();

 // Reset the position of the memory stream to the beginning
 outputStream.Position = 0;

 return outputStream;
}
</memorystream>


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ffprobe failing on certain videos
19 mars 2020, par griswoldbarI work on a platform that uses ffprobe as part of a video transcoding pipeline. One of our users is trying and failing to upload video clips extracted from a CCTV system, and it seems the failure is occurring when we parse the clips with ffprobe.
When I run ffprobe from the command line, I get this :
$ ffprobe file.avi
ffprobe version 4.2.2 Copyright (c) 2007-2019 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.17)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
[avi @ 0x7fc22280b800] Invalid sample_size -1 at stream 1 setting it to 0
[avi @ 0x7fc22280b800] Invalid sample_size -1 at stream 2 setting it to 0
[avi @ 0x7fc22280b800] wav header size < 14 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[avi @ 0x7fc22280b800] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
file.avi: Invalid data found when processing inputI am however able to parse it with mediainfo, which outputs this :
$ mediainfo file.avi
General
Complete name : file.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 11.3 MiB
Duration : 5 min 0 s
Overall bit rate : 316 kb/s
Video
ID : 0
Format : MPEG-4 Visual
Codec ID : MP43
Codec ID/Info : Microsoft MPEG-4 v3 (pre-standard)
Codec ID/Hint : Microsoft
Duration : 5 min 0 s
Source duration : 5 min 0 s
Bit rate : 308 kb/s
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 16.000 FPS
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.063
Stream size : 11.0 MiB (97%)I’m guessing/hoping that there’s a way to make this work by passing appropriate flags to ffprobe - can anyone point me in the right direction ?
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how to use x264 dll in another project
5 août 2014, par Hadi Rasekhenter code here I want to use x264 in my project. There is some line in the code said :
/* Application developers planning to link against a shared library version of
* libx264 from a Microsoft Visual Studio or similar development environment
* will need to define X264_API_IMPORTS before including this header.
* This clause does not apply to MinGW, similar development environments, or non
* Windows platforms. */But I don’t get this line :
define X264_API_IMPORTS before including this headerWe can create x264 dll by its configuration and make
./configure --enable-shared
makebut I can not use the dll in my Qt Project.
I can make my own dll (in another code) and use it in the project.
But when I start to use x264 dll in my project I get the following error :C:\DataHiding\SourceCode2\GUI\DataHiding\mainwindow.cpp:10: error:
'pulldown_frame_duration' was not declared in this scope
qDebug() << pulldown_frame_duration[1];
^