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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 (31)
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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 (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (6612)
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Python - How do I extract audio and video from the same parts of a file ?
18 juillet 2018, par mplisMy goal is to analyze a video file (in this case an mp4 file) for the occurrence of certain features and create a new video file that just contains the video and audio from slightly before and slightly after those features occurring.
I’m using Python/OpenCV and can correctly identify the features in the video and can create the new video file that I want.
I can also use the
subprocess
module andffmpeg
to extract the full audio from the original file and I can use thewave
module to iterate over the audio frames. I’m also planning to useffmpeg
to combine the resulting audio and video files.My issue is extracting the audio that matches up with the frames in the new, condensed video file. The number of frames in the original video file (according to OpenCV) doesn’t equal the number of frames returned from
Wave.getnframes()
, so I’m not sure how to extract just the audio that I need. -
Python - How do I extract audio and video from the same parts of a file ?
3 février 2016, par mplisMy goal is to analyze a video file (in this case an mp4 file) for the occurrence of certain features and create a new video file that just contains the video and audio from slightly before and slightly after those features occurring.
I’m using Python/OpenCV and can correctly identify the features in the video and can create the new video file that I want.
I can also use the
subprocess
module andffmpeg
to extract the full audio from the original file and I can use thewave
module to iterate over the audio frames. I’m also planning to useffmpeg
to combine the resulting audio and video files.My issue is extracting the audio that matches up with the frames in the new, condensed video file. The number of frames in the original video file (according to OpenCV) doesn’t equal the number of frames returned from
Wave.getnframes()
, so I’m not sure how to extract just the audio that I need. -
How to use output of FFMPEG as command line argument to an executable
22 février 2017, par pkuI have a .wmv file which I want to convert to .wav file and I am using ffmpeg for the same, the command is as follows :
ffmpeg -i file.wmv -ar 8000 -sample_fmt s16 -f wav pipe:1
the pipe:1 outputs the output wave file in STDOUT. I want to capture that wave file from STDOUT and pass it as a command line argument to my executable called foo. I want to do the conversion from wmv to wav on the fly rather than saving the .wav file.
Things I have tried are as follows but none of them seem to work :./foo $(ffmpeg -i file.wmv -ar 8000 -sample_fmt s16 -f wav pipe:1)
./foo $(<(ffmpeg -i file.wmv -ar 8000 -sample_fmt s16 -f wav pipe:1))
ffmpeg -i file.wmv -ar 8000 -sample_fmt s16 -f wav pipe:1 | xargs ./foo
ffmpeg -i file.wmv -ar 8000 -sample_fmt s16 -f wav - | ./foo -