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Video: Lisbon Airport Fake Tilt Shift…

flo — Sun, 06 Nov 2011 23:40:27 +0000

http://www.youtube.com/watch?v=wgZ0VX9C0dY

channel.conf ORF Sport + und ORF III…

flo — Tue, 25 Oct 2011 10:57:20 +0000

morgen startet ORF III (ORF 3) und ORF Sport + (ORF Sport Plus).
da ich nirgendwo eine aktuelle channel.conf für dvb-t gefunden habe, hab’ ich sie selbst für Graz erstellt:

PULS 4:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3050:3051:10121
3SAT:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3055:3056:11302
ORF SPORT +:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3060:3061:11303
ServusTV:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3064:3065:11304
ORF III:490000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:3070:3071:11305
ORF1:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:5010:5011:10101
ORF2 St:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:5020:5021:10112
ATV:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:5040:5041:10120
ORF2 B:514000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:5020:5021:10132
WKK:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1101:1102:1
Steiermark 1:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1201:1202:2
Soundportal:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:1401:1402:4
Radio West:538000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_1_2:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_4:HIERARCHY_NONE:0:0:5

in anderen regionen österreichs wird diese klarerweise variieren.

mit einem USB dvb-t empfänger und linux startet man den VLC so:

vlc channel.conf

viel spass.

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[video] 14h Time Lapse…

flo — Tue, 08 Feb 2011 13:52:10 +0000

mein selbstbau timer hat den ersten gröberen härtetest mit erfolg hinter sich gebracht. jetzt kann ich ihn ohne bedenken in version 3 auf einen kleineren formfaktor bringen.
das zeitraffer geht von 06:28 bis 20:42. pro minute wurden 3 fotos gemacht. gesamt etwa 2400 frames.

http://www.youtube.com/watch?v=LzpHkcpm8RM

hier geht’s direkt zum video. auch auf vimeo zu bewundern.

vorsicht vor dem plus…

flo — Thu, 21 Oct 2010 15:43:26 +0000

HD+-Logo

es ist wirklich verblüffend hinter welchen harmlosen logos, die eigentlich mehr versprechen, rechteinhaber versuchen dem kunden seine rechte zu nehmen.

HD+ ist so ein beispiel. um nichts besser aber der kunde darf dann keine werbung mehr überspringen, keinen timeshift machen und natürlich keine aufnahmen mehr auf eine andere festplatte verlagern. kosten tut es auch noch was: zusätzliche gebühren und natürlich neue receiver sind fällig.

da fällt mir nur immer diese grafik ein:

zu allem überfluss muss sich jetzt der konsument wirklich vor jeder zusatzbezeichnung mit dem PLUS (+) fürchten. denn das könnte ja seine rechte und gewohnheiten deutlich einschränken.
nur bei itunes war ja das plus die bezeichnung für die DRM-freie version der musik…

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[video] Tilt Shift Miniature…

flo — Sat, 14 Aug 2010 09:27:15 +0000

i did a little tilt shift miniature time lapse, just to see how it is done and estimate the complexity.

here it is (best seen in HD and full screen):

Time Lapse Miniature from flowolf on Vimeo. also on youtube.com

music by bob wizman – “on your 45″, licensed under cc-by-sa

the howto can be found here.

miniature time-lapse with fake tilt shift (howto)…

flo — Sat, 14 Aug 2010 09:25:27 +0000

i recently came across some videos that took my breath. tilt shift time-lapse videos. they produce kind of a miniature look combined with a stop motion and time lapse feature that was just nice.

of course i wanted to make one

here is how:
get a nice point of view. somewhere where you could be if the whole scene would be a model scale 1:87 (H0 for model train lovers). use a tripod if possible or hold very still.
shoot the scene. i did this with my eos 7d and the HD video function. alternatively you could use any other cam which is able to shoot 2 pictures per second. some canon cams support this if you use CHDK.
having the material to work with load everything to the mac or linux box of your trust.

original frame and fake tilt shift

to make the time lapse i used ffmpeg to extract 2 frames per second from the .MOV:
$ ffmpeg -i ~/input.MOV -r 2 -f image2 out/scene_%06d.png
this leaves you 2 frames per second in .png files in the out folder.

faking it. next thing you need to do is getting the fake tilt shift effect in the images to make everything look like it was tiny. additionally i added a little contrast to make it even look better. if you do not extract the images from a HD movie file as i did you probably should resize them to a native HD size before the next step (1920×1080). here is the little script:

#!/bin/bash
# for better performance save the temp img that is created each time somewhere.
# this saves processing power
# convert out/scene_000001.png -sparse-color Barycentric '0,0 black \
# 0,%[fx:h-1] gray80' -solarize 50% -level 50%,0 \
# /tmp/my_blur_effect.png
# then use this:
# convert $filein -sigmoidal-contrast 9x30% \
# /tmp/my_blur_effect.png \
# -compose Blur -set option:compose:args 25 -composite \
# $fileout
test -z $1 && echo "usage: $0 " && exit -1
filein=$1
fileout=$2
\
convert $filein -sigmoidal-contrast 9x30% \
\( +clone -sparse-color Barycentric '0,0 black 0,%[fx:h-1] gray80' \
-solarize 50% -level 50%,0 \) \
-compose Blur -set option:compose:args 25 -composite \
$fileout

this has to be run in a little for loop. look here to see how this is done.
be very patient with this. this can take a looooong time.

after running this you have all your frames converted to have a higher contrast and a fake tilt shift blur, as seen in the lower picture on the side. all that you need to do now is run ffmpeg again and combine those frames to a movie:
ffmpeg -i final/%06d.png -sameq ./mymovie.mp4
-sameq tells ffmpeg to leave the quality of the images like it is. this guarantees a nice high quality, if your source material is ok.

if you like to add music to your clip you can tell ffmpeg to take an audio file as well:
ffmpeg -i final/%06d.png -sameq -i mysoundtrack.mp3 ./mymovie.mp4
to cut and fade the soundtrack i used sox:
sox -t mp3 -r 192k original_soundtrack.mp3 mysoundtrack.mp3 fade p 0 40 5
good luck!
and here is the resulting video:

[video] Willkommen bei Facebook…

flo — Tue, 20 Jul 2010 15:03:04 +0000

viel besser kann man es nicht auf den punkt bringen. ich kann kaum offene alternativen, die man selbst hosten kann, erwarten.

alexander lehmann hat schon ein paar so geniale filmchen gemacht. ich fand auch karls posting zu dem thema sehr lesenswert.

[video] 14h Time Lapse…

How to make time-lapse videos on a motorcycle…

flo — Mon, 04 Jan 2010 13:27:39 +0000

a few weeks ago i got my hands on a motorcylce camera stand (thx Patrick). one that was actually made for a motorbike and not a modified tankbag with rubber wraps. please don’t ever use those and please do never put a camera into your helmet as some youtube idiots present.

the camera i used is my canon ixus 750. since the lense on this camera is rather low i had to improve the camera stand. i added some aluminum ducts to make it higher and to make the camera see the street. about 7 centimeters were enough.

since i was not able to get the CHDK timelapse to work i shot video. to generate a timelapse i used ffmpeg to extract images out of the video and to unite them to a timelapse video.
using this tutorial and the man pages i was able to come up with this:
#!/bin/bash # sample usage: ./timelapsify.sh input.avi output.mp4 mkdir ffmpeg_temp ffmpeg -i $1 -r 1.4 -f image2 ffmpeg_temp/%05d.png ffmpeg -i ffmpeg_temp/%05d.png -sameq $2 rm -rf ./ffmpeg_temp
note that it is important for ffmpeg to have the images you use to generate the timelapse video in order and sequenced. if you decide to delete some images you have to rename them and must not leave gaps.
also you may have to vary the rate (i used: 1.4) acording to the speed of your input video and the speed of the output video you want to have.

one step i did between extracting and generating the timelapse was sending it through imagemagick to blend the speedometer. using info from this mailing list:
#!/bin/bash #usage: pixelate_circle.sh IN.file OUT.file center_x_coord center_y_coord border_x_coord border_y_coord convert $1 $ -clone 0 -scale 10% -scale 1000% $ \ $ -clone 0 -gamma 0 -fill white \ -draw "circle ${3},${4},${5},${6}"\ $ -composite $2
of course this has to be done for every image

and here is the resulting video: