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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 (...) -
Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
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CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 36
16 février 2021, par Mitrajeet GolsangiI am working on a matplotlib project and want to save it in a mp4 video format.
I am using the ffmpeg program for converting the animation in a video. This is the code for conversion


# The animation definition

ani = FuncAnimation(figure, my_frame_function, frames=100,
 interval=5, init_func=init, blit=True, repeat=True)


# Path for ffmpeg

plt.rcParams['animation.ffmpeg_path'] = 'C:/ffmpeg/bin/ffmpeg.exe'


# Setting up the writer

Writer = writers['ffmpeg']
writer = Writer(fps=10, metadata=dict(artist='Mitrajeet'), bitrate=None)

# Trying to Save the file
ani.save("test.png", writer=writer) # ---- Error here


After running the file I get this Error


MovieWriter stderr:
[h264_amf @ 00000000004ec840] CreateComponent(AMFVideoEncoderVCE_AVC) failed with error 36
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

Traceback (most recent call last):
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 251, in saving
 yield self
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 1161, in save
 writer.grab_frame(**savefig_kwargs)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 363, in grab_frame
 self.fig.savefig(self._frame_sink(), format=self.frame_format,
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\figure.py", line 2311, in savefig
 self.canvas.print_figure(fname, **kwargs)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\backends\backend_qt5agg.py", line 81, in print_figure
 super().print_figure(*args, **kwargs)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\backend_bases.py", line 2210, in print_figure
 result = print_method(
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\backend_bases.py", line 1639, in wrapper
 return func(*args, **kwargs)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\backends\backend_agg.py", line 456, in print_raw
 fh.write(renderer.buffer_rgba())
BrokenPipeError: [Errno 32] Broken pipe

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "prime_counting_function.py", line 63, in <module>
 ani.save("D:/PycharmProjects/Math Graphs/Prime Numbers/output/test.png", writer=writer)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 1161, in save
 writer.grab_frame(**savefig_kwargs)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 131, in __exit__
 self.gen.throw(type, value, traceback)
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 253, in saving
 self.finish()
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 354, in finish
 self.cleanup()
 File "C:\Users\Admin\AppData\Local\Programs\Python\Python38\lib\site-packages\matplotlib\animation.py", line 390, in cleanup
 raise subprocess.CalledProcessError(
subprocess.CalledProcessError: Command '['C:/ffmpeg/bin/ffmpeg.exe', '-f', 'rawvideo', '-vcodec', 'rawvideo', '-s', '640x480', '-pix_fmt', 'rgba', '-r', '10', '-loglevel', 'error', '-i', 'pipe:', '-vcodec', 'h264', '-pix_fmt', 'yuv420p', '-metadata', 'artist=Mitrajeet', '-y', 'D:/PycharmProjects/Math Graphs/Prime Numbers/output/test.png']' returned non-zero exit status 1.
</module>

So whats wrong here ??


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C# extract frames from part of a video file
2 juin 2016, par SiriusNikUsing AForge ffmpeg wrapper you can extract frames from a video using the VideoFileReader class and save it as a bitmap.
See this for the exemple :
Extracting frames of a .avi fileMy problem with that is that you cannot specified where to start reading the frames. It always starts from the beginning of the video file.
But what if i wanted to extract frames that are in the middle of a two hours long video file. Using that class you’d have to parse the whole first hour juste to get to those frames.
Does anyone know a way to achieve that ?
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Using ffmpeg, extract small part of .m4a audio file specifying exact start and end time
31 août 2015, par KesI have Linux mint 17.1.
When I use ffmpeg to cut out a section of a 4 hour long .m4a audio file as follows :
ffmpeg -ss 0:10:00 -i in_file.m4a -vn -c copy -t 0:40:00 out_file.m4athe correct position and duration of extract is extracted and the file plays just fine.
How can I extract using the end time of the extract, not the duration ?
ie in this case the start time and end time are 0:10:00 and 0:00:50.Thank you
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