Hi, I've finally found the time to adpot a script (from "derpeter" who used it for cccamp2011) to generate preroles for our pentabarf xml schedule data. It creates 7 seconds prerole files for all events, I've made one available at: http://layer-acht.org/809.dv I just think the background picture could and should be improved ;) Currently I use the ttf-prociono font for text (available in wheezy and sid) and the pink-red is the color from http://wiki.debian.org/DebianLogo while the DebConf11 text and logo is the one from http://wiki.debconf.org/wiki/DebConf11/Logo The template to edit (background.svg) is attached to this mail. The scripts are attached as well, you want to run xml2prerole.py without any arguments :) the schedule url is hard-coded... dont forget to run this first: apt-get install python-argparse ttf-prociono ffmpeg I'd be delighted to see improved backgrounds! I was also thinking of creating postroles(?) saying "copyright 2011, the debconf videoteam $list_of_names_in_random_order_each_time - archive at http://video.debian.net"; or such. For that I'd probably use the group picture as backgroud... What do you think? cheers, Holger
Attachment:
background.svg
Description: image/svg
#!/usr/bin/env python
# Copyright (C) 2011 derpeter
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import argparse
import fileinput
import commands
import sys
import os
import re
parser = argparse.ArgumentParser(description='Generate prerole file: make sure you have ffmpeg and inkscape in $PATH')
parser.add_argument('-f', action="store", dest="background", help="background SVG. Default background.svg", default='background.svg' )
parser.add_argument('-t', action="store", dest="title", help="talk title")
parser.add_argument('-s', action="store", dest="subtitle", help="talk subtitle", default = '')
parser.add_argument('-p', action="store", dest="speakers", help="person(s). Persons are separated with a blank.", nargs="+")
parser.add_argument('-d', action="store", dest="date", help="date of the talk")
parser.add_argument('-b', action="store", dest="begin", help="begin of the talk")
parser.add_argument('-i', action="store", dest="id", help="talk id")
parser.add_argument('-o', action="store", dest="output", help="output dir", default='')
parser.add_argument('-w', action="store", dest="workdir", help="working dir", default='')
args = parser.parse_args()
output=[]
# line lengths
linelen64pt = 37
linelen48pt = 40
wide_linelen48pt = 49
def html_protect(vstr):
vstr = "&".join(vstr.split("&"))
vstr = "<".join(vstr.split("<"))
vstr = ">".join(vstr.split(">"))
vstr = """.join(vstr.split('"'))
vstr = "'".join(vstr.split("'"))
return vstr
# replace the string in a given svg
def build_svg():
#check the inputs filds
if args.id == None:
print "id not defined"
sys.exit(1)
else:
print "working on %s_prerole.dv now..." % args.id
if args.title == None:
print "title not defined"
sys.exit(1)
if args.subtitle == None:
print "subtitle not defined"
args.subtitle = ''
if args.speakers == None:
print "WARNING: person not defined"
#sys.exit(1)
if args.date == None:
print "date not defined"
args.date=''
if args.begin == None:
print "begin not defined"
args.begin = ''
# build the speaker name list
speakers1 = ''
speakers2 = ''
speakers3 = ''
speakers4 = ''
speakers5 = ''
speakers6 = ''
if args.speakers is not None:
speakers = []
tmp = ''
for spk in args.speakers:
if len(tmp) + 3 + len(spk) > linelen48pt:
speakers.append(tmp) # + ' -')
tmp = ''
# append
if tmp != '':
tmp = tmp + ' - '
tmp = tmp + spk
if tmp != '':
speakers.append(tmp)
if len(speakers) == 1:
speakers1 = speakers[0]
speakers2 = ''
elif len(speakers) == 2:
speakers1 = speakers[0]
speakers2 = speakers[1]
elif len(speakers) == 3:
speakers1 = speakers[0]
speakers2 = speakers[1]
speakers3 = speakers[2]
elif len(speakers) == 4:
speakers1 = speakers[0]
speakers2 = speakers[1]
speakers3 = speakers[2]
speakers4 = speakers[3]
elif len(speakers) == 5:
speakers1 = speakers[0]
speakers2 = speakers[1]
speakers3 = speakers[2]
speakers4 = speakers[3]
speakers5 = speakers[4]
elif len(speakers) == 6:
speakers1 = speakers[0]
speakers2 = speakers[1]
speakers3 = speakers[2]
speakers4 = speakers[3]
speakers5 = speakers[4]
speakers6 = speakers[5]
else:
print "too many authors for event %s" % args.id
sys.exit(1)
# if len(args.speakers) == 1:
# speaker = args.speakers[0]
# elif len(args.speakers) == 2:
# speaker = args.speakers[0] + ' ' + args.speakers[1]
# elif len(args.speakers) == 3:
# speaker = args.speakers[0] + ' - ' + args.speakers[1] + ' - ' + args.speakers[2]
# elif len(args.speakers) == 4:
# speaker = args.speakers[0] + ' - ' + args.speakers[1] + ' - ' + args.speakers[2] + ' - ' + args.speakers[3]
# # in the rare case that we have more than 4 speaker we replace the last speakers with et al.
# elif len(args.speakers) > 4:
# speaker = args.speakers[0] + ' - ' + args.speakers[1] + ' - ' + args.speakers[2] + ' - ' + args.speakers[3] + ' - et al.'
# split title into two lines if necessary
if len(args.title) > linelen64pt:
titleRE = re.compile(r'^(.{0,'+str(linelen64pt)+r'}) (.*)$')
titles = titleRE.search(args.title).groups()
title1 = titles[0]
title2 = titles[1]
if len(title2) > linelen64pt:
print "WARNING: title too long (2nd line)"
title2 = title2[:linelen64pt]+"..."
else:
title1 = args.title
title2 = ''
# split subtitle into two lines if necessary
if len(args.subtitle) > wide_linelen48pt:
subtitleRE = re.compile(r'^(.{0,'+str(wide_linelen48pt)+r'}) (.*)$')
subtitles = subtitleRE.search(args.subtitle).groups()
subtitle1 = subtitles[0]
subtitle2 = subtitles[1]
if len(subtitle2) > wide_linelen48pt+10:
print "WARNING: subtitle too long (2nd line)"
subtitle2 = subtitle2[:wide_linelen48pt]+"..."
else:
subtitle1 = args.subtitle
subtitle2 = ''
# replace the strings in the svg
# add here some filtering to precent to long names
for line in fileinput.FileInput(args.background,inplace=0):
if "%title$1%" in line:
line=line.replace('%title$1%', html_protect(title1))
elif "%title$2%" in line:
line=line.replace('%title$2%', html_protect(title2))
elif "%subtitle$1%" in line:
line=line.replace('%subtitle$1%', html_protect(subtitle1))
elif "%subtitle$2%" in line:
line=line.replace('%subtitle$2%', html_protect(subtitle2))
elif "%speaker$1%" in line:
line=line.replace('%speaker$1%', html_protect(speakers1))
elif "%speaker$2%" in line:
line=line.replace('%speaker$2%', html_protect(speakers2))
elif "%speaker$3%" in line:
line=line.replace('%speaker$3%', html_protect(speakers3))
elif "%speaker$4%" in line:
line=line.replace('%speaker$4%', html_protect(speakers4))
elif "%speaker$5%" in line:
line=line.replace('%speaker$5%', html_protect(speakers5))
elif "%speaker$6%" in line:
line=line.replace('%speaker$6%', html_protect(speakers6))
elif "%date%" in line:
line=line.replace('%date%', args.date+' '+args.begin)
output.append(line)
outfileName = args.workdir+args.id+".svg"
outfile = file(outfileName, 'w')
outfile.writelines(output)
# create a png out of the svg
def build_png():
result = commands.getstatusoutput("inkscape "+ args.workdir+args.id +".svg -e "+args.workdir+args.id+".png")
if result[0] != 0:
print "png not created"
print result[1]
sys.exit(1)
# build the dv file
def build_dv():
prerole_duration = "7s"
# check if tmp file already present and remove it
if os.path.exists(args.workdir+args.id+".tmp"):
commands.getstatusoutput("rm -f "+args.workdir+args.id+".tmp")
result = commands.getstatusoutput("ffmpeg -qscale 3 -loop_input -i "+ args.workdir+args.id +".png -target dv-pal "+args.workdir+args.id+".tmp -t "+prerole_duration+" -r 25 -an -threads 2")
if result[0] != 0:
print "inital dv file not created"
print result[1]
sys.exit(1)
#check if silence file is present, if not generate it
if not os.path.exists('silence'):
os.system('dd if=/dev/zero of=silence ibs=10240 count=10240')
#check if prerole file is present if yes delete it
if os.path.exists(args.output+args.id+"prerole.dv"):
commands.getstatusoutput("rm -f "+args.output+args.id+"prerole.dv")
#cat the first part of the prerole in front of the edittedt one
result = commands.getstatusoutput('cat preprerole.dv '+ args.workdir+args.id +'.tmp > '+ args.workdir+args.id +'.tmp1')
result = commands.getstatusoutput("ffmpeg -f dv -target pal-dv -i "+args.workdir+args.id+".tmp1 -f u16le -i silence -vcodec copy -t "+prerole_duration+" "+args.workdir+args.id+"_prerole.dv")
#if result[0] == 1:
# no idea why ffmpeg is not returning 0 at this call
if True:
commands.getstatusoutput("rm -f "+args.workdir+args.id+".tmp "+args.workdir+args.id+".tmp1")
else:
print "audio fix not applied"
print result[1]
sys.exit(1)
#clean up
commands.getstatusoutput("rm -f "+args.workdir+args.id+".png")
commands.getstatusoutput("rm -f "+args.workdir+args.id+".svg")
build_svg()
build_png()
build_dv()
sys.exit(0)
#!/usr/bin/env python
# -*- coding:utf8 -*-
import urllib
import lxml.etree
from subprocess import Popen
rohdaten = urllib.urlopen("http://penta.debconf.org/dc11_schedule/schedule.en.xml";).read()
#daten = unicode(rohdaten, "latin1")
daten = rohdaten
root = lxml.etree.fromstring(daten).getroottree()
SCRIPT_FULLPATH = "genPrerole.py"
EXTRA_ARGS = [
"-o", "../prerole/",
#"-w", "/tmp/workdir"
]
def call_genPrerole(info):
command = ["python", SCRIPT_FULLPATH]
arguments = dict(t="title",
s="subtitle",
p="speakers",
d="date",
b="start",
i="id")
# if info["id"] != str(4451):
# return
for flag, key in arguments.iteritems():
#if flag == 'speakers' and key == []:
# key = '_'
flag = "-" + flag
data = None
try:
data = info[key]
except KeyError:
print "key %s does not exist for %s" % (key, info["id"])
if data is None or data == []:
#print "value %s was None for %s" % (key, info["id"])
pass
# data = " "
# flag = " "
elif isinstance(data, list):
command += [flag] + data
elif isinstance(data, basestring):
command += [flag, data]
else:
raise ValueError("unexpected datatype")
command += EXTRA_ARGS
process = Popen(command)
returncode = process.wait()
if returncode != 0:
print "returncode %d != 0 for %r" % (returncode, command)
def daten_von_event(event, upper_info):
info = upper_info.copy()
info["id"] = event.get("id")
things = "start room title subtitle".split(" ")
for thing in things:
thing_tag = event.find(thing)
if thing_tag is None:
print "ERROR: no tag %s in %r" % (thing, event)
else:
if event.find(thing).text is not None:
info[thing] = event.find(thing).text
info["speakers"] = []
persons = event.find("persons")
for person in list(persons):
info["speakers"].append(person.text)
call_genPrerole(info)
def daten_von_raum(raum, upper_info):
info = upper_info.copy()
info["name"] = raum.get("name")
for event in list(raum):
daten_von_event(event, info)
def daten_von_tag(tag):
info = {}
info["date"] = tag.get("date")
info["index"] = tag.get("index")
for raum in list(tag):
daten_von_raum(raum, info)
def daten_von_schedule(schedule):
for tag in schedule.xpath("day"):
daten_von_tag(tag)
daten_von_schedule(root)