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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 (45)
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Automated installation script of MediaSPIP
25 avril 2011, parTo overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
The documentation of the use of this installation script is available here.
The code of this (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
Sur d’autres sites (7170)
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Add watermark to all videos in a folder and enable it only during certain time intervals
20 octobre 2016, par Neo HeraklesI’m making a batch file to watermark all my videos in a folder using FFMPEG, I have to place the watermark at 1/3 of the duration of the video, I currently have this, it worked individually but I can’t seem to make it work for the whole folder, what am I doing wrong ? Also, is there a way to enable the watermark multiple times ? once at 1/3 of the duration, another at 2/3 of the duration.
@echo off
setlocal
for %%I in ("%~dp0\water\*.mp4") do (
for /F "delims=" %%I in ('ffprobe.exe -v error -show_entries format^=duration -of default^=noprint_wrappers^=1:nokey^=1 %%I.mp4 2^>^&1') do set "duration=%%I"
'ffmpeg.exe -i "%%I" -i Watermark.png -filter_complex "[0:v]scale=iw:ih[v0];[1:v][v0]scale2ref=iw/6:ih/10[logo][0v];[0v][logo]overlay=W-w-3:H-h-3:enable='between(t,%duration%/3,(%duration%/3)+2)'[v]" -map "[v]" -map 0:a -codec:v libx264 -preset ultrafast -crf 23 -codec:a copy "%~dp0\out\%%~nI.mp4"'
)
endlocal
pauseThanks a lot for all the help I’ve received during these days, it really helped me to improve, although I still have a long way to go.
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lavf/mpegts : Consider stream_type 0x0f just a hint towards AAC.
13 septembre 2017, par Carl Eugen Hoyos -
ffmpeg Hardware acceleration (hw accel) has poor performance on Hololens 1
12 avril 2021, par DimitrisI am building a library in C++ (dll) for decoding video h264 format. The problem is that on CPU is faster than GPU (hw accel).


In the CPU, the execution time is about 1200 micro secs and the total time on dll is 2600 micro.


In the GPU, the execution time is less, about 200 micro secs but transfer from GPU to CPU (RAM) has extra time, about 1100-1300 micro secs and the total time is 4200 micro. I am using the d3d11va/cuda hw accel device. That's all is not a problem on a PC, but I need the dll for the Hololens app (with poor performance) and I need to decode video on 30 fps in 1080p.


My code is based on this tutorial from ffmpeg github repository.


Do you have any suggestions on how to avoid the command
av_hwframe_transfer_data(sw_frame, frame, 0)
cause the bottleneck in the Hololens is about the transfer from GPU to CPU ?

Thank you