[PD] Saving Gem output as video file on MacOSX ?

[Chris McCormick]

On Wed, Feb 13, 2008 at 09:39:40PM +0100, cyrille henry wrote:
> marius schebella a écrit :
> >another way to record your performances is to mirror your display and 
> >feed the output with a dv camera or some other device.
> this will limit the quality.
> 
> >recording your actions is brilliant but a lot of effort during patching.
> 
> in fact, not so much effort.
> specially if you use this abstractions.
> you just have to insert a [rec_play_any data_name] on every connections you 
> need to record.
> then the [master_rec_play] allow you to record everything in a qlist, and 
> play it latter in order to record sound/images.
> 
> 
> this is known to gives good result.
> 
> the single magic line i use to create a movie is : 
> 
> mencoder -oac mp3lame -lameopts cbr:br=256:aq=0  -audiofile rec_.wav -fps 
> 50 -ss 0 -ovc xvid -xvidencopts bitrate=5000 -vop scale=640:480  mf://*.jpg 
> -o out.avi

[plug]

The s-abstractions collection also contains a couple of friendly GOP
helper abstractions (called 'total recall') for doing this:

<http://mccormick.cx/viewcvs/*checkout*/s-abstractions/s-totalrecall-help.pd?root=svn>
<http://mccormick.cx/viewcvs/*checkout*/s-abstractions/s-totalrecall.pd?root=svn>
<http://mccormick.cx/viewcvs/*checkout*/s-abstractions/s-tr-node.pd?root=svn>

My mencoder script for converting jpg + mp3 to video is attached [and
works in Debian Etch]. This will render a perfectly synchronised video
for you at the exact framerate of Gem - usually 20fps I think.

I made this video with that:
<http://archive.org/details/Ergates/>

[/plug]

Best,

Chris.

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http://mccormick.cx
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#!/bin/sh

if [ "$4" != "" ]
then
	mencoder -flip -mf fps=$1:type=jpg -o $4 -nosound -ovc lavc -lavcopts vcodec=mjpeg -of lavf -lavfopts format=mov:i_certify_that_my_video_stream_does_not_use_b_frames -audiofile $3 -oac copy mf://$2

#mencoder -mf fps= -ffourcc DX50 -ovc lavc -lavcopts
#vcodec=mpeg4:vbitrate=9800:aspect=4/3:vhq:keyint=15 -audiofile
#verspuckte_Schlucke.mp3 -oac copy -vf scale=640:480 -o
#residuum-verspuckte_schlucke.avi mf://*.jpg

else
	echo Turn jpegs into mjpeg movie with .mov container format.
	echo Usage:
	echo $0 framerate inputfilenames mp3 outputmovie.mov
	echo
	echo framerate = song length / total frames recorded
	echo inputfilenames = e.g. '*.jpg'
	echo mp3 = mp3 file containing the audio
	echo outputmovie.mov = movie file to write to
fi