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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (43)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...) -
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 (...)
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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 (...)
Sur d’autres sites (8425)
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avcodec/wmaprodec : check number of channels for XMA streams
19 janvier 2017, par Paul B Mahol -
Grep for a number between a certain range - Checking WAV Quality
11 août 2014, par BT643I’m trying to write a regular expression (to be used in conjunction with ffmpeg, which can check that a WAV file is over a certain quality.
The minimum should be :
Audio Channels : 2 (Stereo)
Audio Sample Rate : 44,100 Hz
Audio Bitrate : 1411 Kbps
Audio Bit Depth : 16 bitSo I’ve tried the following commands so far :
/usr/local/bin/ffmpeg -i "/path/to/file.wav" 2>&1 | egrep 'stereo|2 channels'
This works fine to get a stero (2 channel) WAV. I’m getting issues with the next part, searching between a range of numbers.
/usr/local/bin/ffmpeg -i "/path/to/file.wav" 2>&1 | egrep 'stereo|2 channels' | egrep '[41000-196000] Hz'
Obviously this just searches each number individually, so it’s finding results if there’s a 4 OR 1 OR 0 OR 0 OR 0 etc...
The bit rate and bit depth just needs to be OVER 1411 and 16 respectively.
Thanks
EDIT -
Here’s the ffmpeg output for a low quality WAV which should be rejected :ffmpeg version git-2012-05-22-27127eb Copyright (c) 2000-2012 the FFmpeg developers
built on May 22 2012 12:27:21 with gcc 4.6.1
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab
libavutil 51. 53.100 / 51. 53.100
libavcodec 54. 21.101 / 54. 21.101
libavformat 54. 6.100 / 54. 6.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 75.100 / 2. 75.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
[wav @ 0x355b140] max_analyze_duration 5000000 reached at 5056000
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from '/path/to/file.wav':
Duration: 00:02:28.47, bitrate: 512 kb/s
Stream #0:0: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 32000 Hz, stereo, u8, 512 kb/s -
configure : Include the armcc build number in the compiler identification
28 juillet 2014, par Martin Storsjöconfigure : Include the armcc build number in the compiler identification
This tries to find the most expressive part of the output of
armcc —vsn to include, giving a compiler identification of
"ARM Compiler 5.04 update 2 (build 82)" instead of just
"ARM Compiler 5.04" for armcc 5.0.4.x versions of armcc output the following, for "armcc —vsn" :
ARM C/C++ Compiler, RVCT4.0 [Build 925]
For evaluation purposes only
Software supplied by : ARM LimitedARM C/C++ Compiler, 4.1 [Build 894]
For evaluation purposes only
Software supplied by : ARM Limited5.0 versions output this :
Product : ARM Compiler 5.04
Component : ARM Compiler 5.04 update 2 (build 82)
Tool : armcc [5040081]
For evaluation purposes only
Software supplied by : ARM LimitedSigned-off-by : Martin Storsjö <martin@martin.st>