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Autres articles (100)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (15117)
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Make blurred background faster with ffmpeg
26 septembre 2022, par Peter CzaskI have a vertical videos which I'll like to make them horizontal 1920x1080 with blurred background.


I do it with this command :


ffmpeg -i input.mp4 -vf 'split[original][copy];[copy]scale=ih*16/9:-1,crop=h=iw*9/16,gblur=sigma=20[blurred];[blurred][original]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2' output.mp4 



which that code I'm satisfied with the result, except that it takes very very long time to produce it. Is there any way to speed it up ? I noticed that the blurred part on the background uses half of the overlay video (non blurred), I'll like to blurry just with the edge (or 10 pixels) of the non blurred video (if this makes the encoding faster)...


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avformat_write_header() changes my stream's time_base
12 avril 2023, par grekenI have a high framerate camera which can capture >2000 fps. My plan was to assign actual capture timestamps with µs resolution to the frames and encode with H.264 in a matroska file.


So I set the
time_base
of both theAVStream
and theAVCodecContext
to{1, 1'000'000}
. But after callingavformat_write_header(avFormatContext, nullptr)
I notice that the stream'stime_base
is{1, 1'000}
. Now, since my framerate is double this resolution, I get identical consecutive timestamps and half my frames get lost when I extract them from the video file.

Does anyone have an idea why this is happening and what I can do about it ? Preferably in a way that preserves the correct timestamps.


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Cannot install Libtool library used but `LIBTOOL' is undefined trying to install ffmpeg
23 décembre 2014, par user1503606I am trying to install ffmpeg on centos following this tutorial.
http://ffmpeg.org/trac/ffmpeg/wiki/CentosCompilationGuide
but when i run.
cd ~/ffmpeg_sources
git clone --depth 1 git://github.com/mstorsjo/fdk-aac.git
cd fdk-aac
autoreconf -fiv
./configure --prefix="$HOME/ffmpeg_build" --disable-shared
make
make install
make distcleanI get the following error.
cd . && /bin/sh /root/ffmpeg_sources/fdk-aac/missing --run automake-1.9 --foreign
Makefile.am: C objects in subdir but `AM_PROG_CC_C_O' not in `configure.ac'
make: *** [Makefile.in] Error 1
[root@worldnewstranslate fdk-aac]# make install
cd . && /bin/sh /root/ffmpeg_sources/fdk-aac/missing --run automake-1.9 --foreign
Makefile.am: C objects in subdir but `AM_PROG_CC_C_O' not in `configure.ac'
make: *** [Makefile.in] Error 1I cannot get it to work for the life of me any help please why i maybe getting these errors.
Thanks