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Autres articles (52)
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Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...) -
L’espace de configuration de MediaSPIP
29 novembre 2010, parL’espace de configuration de MediaSPIP est réservé aux administrateurs. Un lien de menu "administrer" est généralement affiché en haut de la page [1].
Il permet de configurer finement votre site.
La navigation de cet espace de configuration est divisé en trois parties : la configuration générale du site qui permet notamment de modifier : les informations principales concernant le site (...)
Sur d’autres sites (6071)
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How to check if video have visually corrupted frames ?
1er février, par B LoloI'm using ffmpeg to convert and analyze video, mostly avi to mkv. Sometimes video that I work on have one frame corrupted in random place, , it looks like :






How to check if frame is visually corrupted in ffmpeg ?



It's not file corruption (not byte corruption), I know that because this video artifact is present in source file, it's just visual corruption.



This command line gives error free result : 
 ffmpeg -i myinput.avi params out.mkv 2> error_log.txt



How to find if similar pattern is on any more frames in video file ? Can something from signalstats could be helpful ?


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FFMPEG command issue for merging mp4 videos in android
7 septembre 2018, par DJtiwariI am using following FFMPEG command for merging mp4 videos in android. But video is rotated 90 degree after merging.
I am stuck from two days .If any idea it would be highly appriciated.
Thanks in Advance !
complexCommand = new String[] {
"ffmpeg",
"-y",
"-i",
recordpath + "Vid1.mp4",
"-i",
recordpath + "Vid2.mp4",
"-strict",
"experimental",
"-filter_complex",
"[0:v]scale=w=640:h=480[v1]; [1:v]scale=w=640:h=480[v2]; [v1][0:a][v2][1:a] concat=n=2:v=1:a=1 [v] [a]",
"-map", "[v]", "-map", "[a]", "-b", "2097k", "-vcodec",
"mpeg4","-ab","64k","-ac","2","-ar","22050", recordpath + "Outputnew.mp4"}; -
Live video from raw tcp packets
7 juin 2017, par benuutswe are trying to make a small python app that display a live video from sniffed packets using
scapy
andffplay
. This is part of our master degree research project. The goal is to make a proof of concept app that spies on video transimitted over tcp.
We have a working script that writes into a.dat
file and then we read it usingffplay
. It works ok but have a lot of latency and we think we could do better : directly stream it intoffplay
without the need to write raw data in a file.Here’s our script :
from scapy.all import *
import os
export_dat = open("data.dat", "a")
def write_packet_raw(packet):
export_dat.write(str(packet.getlayer(Raw)))
def realtime_packet():
p = sniff(iface="wlan0", filter="tcp and (port 5555)", count=5000, prn=write_packet_raw)
realtime_packet()
export_dat.close()And then we launch :
ffplay -window_title Videostream -framedrop -infbuf -f h264 -i data.dat
Any idea on how we can achieve that ? thanks.