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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (54)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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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 (...) -
Demande de création d’un canal
12 mars 2010, parEn fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)
Sur d’autres sites (5585)
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In Command Line, how do I use a constant set by a nested For ?
20 octobre 2016, par Neo HeraklesIs it possible to set a variable through a For and then use its value ? I’m using two For, one to move across a whole folder and the other one to get the value I desire, the issue here is, the operation done by %watermark% doesn’t recognize the value of %duration%, I believe it’s trying the set the constant and then do the operation simultaneously and that’s why there’s no value, could you please tell me how to pass the variable’s value to duration ?
@echo off
setlocal
for %%G 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 2^>^&1') do (
set "duration=%%I"
ffmpeg.exe -i "%%G" -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\%%~nG.mp4"
)
)
endlocal
pauseThe output for this is
Undefined constant or missing '(' in '/3)+2)so it’s definetely the constant the issue here.
Thanks for the help.Edit : SOLVED, the solution was to use %%I instead of %duration%
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Pygame : Frame ghosting ?
5 octobre 2022, par Sam TubbI am working on a animation environment in python using pygame. The user draw's each frame, and then using ffmpeg the animation is saved as an .avi movie. I would like to implement a feature, but am not sure how.. frame ghosting. Like display the previous frame while you draw the current.



I tried creating a surface called
ghostthat copies the current frame when the next-frame key is pressed. Then draws it with an alpha level of 10, but this didn't work out correctly.


I am not sure what to do, here is the source code for anyone that thinks they have an idea :



#Anim8

import pygame,subprocess,shutil
from os import makedirs
from pygame.locals import *
from random import randrange
pygame.init()
screen=pygame.display.set_mode((740,580))
draw=pygame.Surface((740,540))
draw.fill((200,200,200))
bcol=(200,200,200)
gui=pygame.Surface((740,40))
gui.fill((50,50,50))
size=2
color=(0,0,0)
screen.fill((200,200,200))
prevcol=0
newcol=0
f=0
msg=''
framerate=60
try:
 makedirs('anim')
except:
 pass
def DrawColors(x,y):
 pygame.draw.rect(gui, (255,0,0), (x+3,y+3,15,15),0)
 pygame.draw.rect(gui, (0,0,0), (x+3,y+21,15,15),0)
 pygame.draw.rect(gui, (0,255,0), (x+21,y+3,15,15),0)
 pygame.draw.rect(gui, (200,200,200), (x+21,y+21,15,15),0)
 pygame.draw.rect(gui, (0,0,255), (x+39,y+3,15,15),0)
while True:
 pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
 mse=pygame.mouse.get_pos()
 screen.blit(gui, (0,0))
 DrawColors(0,0)
 screen.blit(draw,(0,40))
 key=pygame.key.get_pressed()
 if key[K_1]:
 framerate=10
 msg='Frame Rate set to 10'
 if key[K_2]:
 framerate=20
 msg='Frame Rate set to 20'
 if key[K_3]:
 framerate=30
 msg='Frame Rate set to 30'
 if key[K_4]:
 framerate=40
 msg='Frame Rate set to 40'
 if key[K_5]:
 framerate=50
 msg='Frame Rate set to 50'
 if key[K_6]:
 framerate=60
 msg='Frame Rate set to 60'
 if key[K_7]:
 framerate=70
 msg='Frame Rate set to 70'
 if key[K_8]:
 framerate=80
 msg='Frame Rate set to 80'
 if key[K_9]:
 framerate=90
 msg='Frame Rate set to 90'
 if key[K_0]:
 framerate=100
 msg='Frame Rate set to 100'

 if key[K_a]:
 pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
 f+=1
 for e in pygame.event.get():
 if e.type==QUIT:
 shutil.rmtree('anim')
 exit()
 if e.type==KEYDOWN:
 if e.key==K_s:
 msg='Added Frame!'
 pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
 f+=1
 if e.key==K_c:
 draw.fill(bcol)
 if e.key==K_r:
 name='anim'+str(randrange(0,999))+str(randrange(0,999))+'.avi'
 msg='Rendering: '+name
 pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
 subprocess.call('ffmpeg -f image2 -s 640x480 -i anim/frame%01d.png -r '+str(framerate)+' '+name,shell=True)
 msg='Done!'
 if e.key==K_p:
 subprocess.call('ffplay '+name,shell=True)
 if e.type==MOUSEBUTTONDOWN:
 if e.button==1:
 try:
 prevcol=color
 newcol=gui.get_at(mse)
 if newcol==(50,50,50):
 newcol=prevcol
 color=newcol
 except:
 pass
 if e.button==3:
 try:
 prevcol=bcol
 newcol=gui.get_at(mse)
 if newcol==(50,50,50):
 newcol=prevcol
 draw.fill(newcol)
 bcol=newcol
 except:
 pass
 if e.button==4:
 size+=1
 if size>7:
 size=7
 if e.button==5:
 size-=1
 if size==0:
 size=1 
 if e.type == pygame.MOUSEMOTION:
 lineEnd = pygame.mouse.get_pos()
 lineEnd = (lineEnd[0],lineEnd[1]-40)
 if pygame.mouse.get_pressed() == (1, 0, 0):
 pygame.draw.line(draw, color, lineStart, lineEnd, size)
 lineStart = lineEnd

 pygame.display.flip()



Oh, and on another note, just if anyone was curious, here is what the output looks like.. I made a little new year's animation :





-
Pygame : Frame ghosting ?
31 décembre 2013, par Sam TubbI am working on a animation environment in python using pygame. The user draw's each frame, and then using ffmpeg the animation is saved as an .avi movie. I would like to implement a feature, but am not sure how.. frame ghosting. Like display the previous frame while you draw the current.
I tried creating a surface called
ghostthat copies the current frame when the next-frame key is pressed. Then draws it with an alpha level of 10, but this didn't work out correctly.I am not sure what to do, here is the source code for anyone that thinks they have an idea :
#Anim8
import pygame,subprocess,shutil
from os import makedirs
from pygame.locals import *
from random import randrange
pygame.init()
screen=pygame.display.set_mode((740,580))
draw=pygame.Surface((740,540))
draw.fill((200,200,200))
bcol=(200,200,200)
gui=pygame.Surface((740,40))
gui.fill((50,50,50))
size=2
color=(0,0,0)
screen.fill((200,200,200))
prevcol=0
newcol=0
f=0
msg=''
framerate=60
try:
makedirs('anim')
except:
pass
def DrawColors(x,y):
pygame.draw.rect(gui, (255,0,0), (x+3,y+3,15,15),0)
pygame.draw.rect(gui, (0,0,0), (x+3,y+21,15,15),0)
pygame.draw.rect(gui, (0,255,0), (x+21,y+3,15,15),0)
pygame.draw.rect(gui, (200,200,200), (x+21,y+21,15,15),0)
pygame.draw.rect(gui, (0,0,255), (x+39,y+3,15,15),0)
while True:
pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
mse=pygame.mouse.get_pos()
screen.blit(gui, (0,0))
DrawColors(0,0)
screen.blit(draw,(0,40))
key=pygame.key.get_pressed()
if key[K_1]:
framerate=10
msg='Frame Rate set to 10'
if key[K_2]:
framerate=20
msg='Frame Rate set to 20'
if key[K_3]:
framerate=30
msg='Frame Rate set to 30'
if key[K_4]:
framerate=40
msg='Frame Rate set to 40'
if key[K_5]:
framerate=50
msg='Frame Rate set to 50'
if key[K_6]:
framerate=60
msg='Frame Rate set to 60'
if key[K_7]:
framerate=70
msg='Frame Rate set to 70'
if key[K_8]:
framerate=80
msg='Frame Rate set to 80'
if key[K_9]:
framerate=90
msg='Frame Rate set to 90'
if key[K_0]:
framerate=100
msg='Frame Rate set to 100'
if key[K_a]:
pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
f+=1
for e in pygame.event.get():
if e.type==QUIT:
shutil.rmtree('anim')
exit()
if e.type==KEYDOWN:
if e.key==K_s:
msg='Added Frame!'
pygame.image.save(draw, 'anim/frame'+str(f)+'.png')
f+=1
if e.key==K_c:
draw.fill(bcol)
if e.key==K_r:
name='anim'+str(randrange(0,999))+str(randrange(0,999))+'.avi'
msg='Rendering: '+name
pygame.display.set_caption('Anim8 - Sam Tubb - '+'Frame: '+str(f)+' '+str(msg))
subprocess.call('ffmpeg -f image2 -s 640x480 -i anim/frame%01d.png -r '+str(framerate)+' '+name,shell=True)
msg='Done!'
if e.key==K_p:
subprocess.call('ffplay '+name,shell=True)
if e.type==MOUSEBUTTONDOWN:
if e.button==1:
try:
prevcol=color
newcol=gui.get_at(mse)
if newcol==(50,50,50):
newcol=prevcol
color=newcol
except:
pass
if e.button==3:
try:
prevcol=bcol
newcol=gui.get_at(mse)
if newcol==(50,50,50):
newcol=prevcol
draw.fill(newcol)
bcol=newcol
except:
pass
if e.button==4:
size+=1
if size>7:
size=7
if e.button==5:
size-=1
if size==0:
size=1
if e.type == pygame.MOUSEMOTION:
lineEnd = pygame.mouse.get_pos()
lineEnd = (lineEnd[0],lineEnd[1]-40)
if pygame.mouse.get_pressed() == (1, 0, 0):
pygame.draw.line(draw, color, lineStart, lineEnd, size)
lineStart = lineEnd
pygame.display.flip()Oh, and on another note, just if anyone was curious, here is what the output looks like.. I made a little new year's animation :
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