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Autres articles (60)
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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 -
Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation" -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (7766)
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ffmpeg - avcodec_receive_frame returns -11, why and how to solve it ?
26 mars 2022, par Kalen ClarkI'm learning to use ffmpeg in my engine,


and I wanna decode the first frame of video stream and output it to an image file.


I tried and just can't figured out why it returns -11.


My code :(error in last 5 lines of code, line 70-74)




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cvCaptureFromFile always returns NULL, Visual Studio 2005
14 septembre 2012, par user1671173I've got a problem with the cvCaptureFromFile function. It always returns NULL. I've done some research on the internet and I've added PATH to ffmpeg's "bin" directory.
But it's still the same. So I've tried to open the desired file withffplay.exe
. It returns an error which says "Invalid data found when processing an input". It is a "mjpg" file, which should be played with ffmpeg. Then I tried the same with some "mpg" file.
Now the message is "no such file or directory" which is not true, because the file is in the place. What else should I do ?
The files all right with Media-Player and VLC player.
Please help ! -
capture.isOpened() returns false in python [closed]
24 décembre 2019, par Elnaz YousefiI tried to read a video (.avi file) by cv2.VideoCapture in Python, but capture.isOpened() returns false.
when I execute python in cmd, it returns "Python 3.7.2". Also, when I use "pip install opencv-python" in command line, OpenCV was successfully installed.
By the way, I noticed that the version of opencv which is installed is 4.1.2 and the ffmpeg file is named "opencv_videoio_ffmpeg412".
Is everything right ? so what’s the problem ?