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Frescobaldi/LilyPond timelapse video


From: Francisco Vila
Subject: Frescobaldi/LilyPond timelapse video
Date: Wed, 10 Apr 2013 13:37:41 +0200

Hello,

I wanted to share this screencast with you. Duration: 1'29'' at 25x speed.

http://lilypond.es/lilypond/timelapse-screencast/timelapse-aquaplane.webm
also available as
http://lilypond.es/lilypond/timelapse-screencast/timelapse-aquaplane.mp4

It shows trial and error, browsing manuals, pauses for lunch and more.

The webm version plays directly on Firefox when drag&drop from file
manager in my system.

It is a full-screen capture at 1024x600. I used the following console
commands in an Acer Aspire One under Debian Wheezy:

#mkdir png

# save X11 screen @1fps to Ogg Theora; stop with Ctrl+C
avconv -f x11grab -r 1 -s 1024x600 -i :0.0 out.ogv

# convert to png images
ffmpeg -i out.ogv -r 1 -f image2 png/frame%05d.png

# Optionally at this point, delete unwanted png's and rename all numerically.

# convert images to video @25fps
ffmpeg -r 25 -i png/frame%05d.png -r 25 timelapse.mp4

# same for webm VP8
ffmpeg -r 25 -i png/frame%05d.png -vcodec libvpx -r 25 -b10000k timelapse.webm

There is much room for improving, so suggestions are appreciated. Thanks

--
Francisco Vila. Badajoz (Spain)
www.paconet.org , www.csmbadajoz.com



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