Re: [R] Playing with rgl: a Youtube video
On Tue, Dec 22, 2009 at 8:10 PM, Duncan Murdoch murd...@stats.uwo.cawrote: On 22/12/2009 12:49 PM, Mark Knecht wrote: On Mon, Dec 21, 2009 at 4:42 AM, Duncan Murdoch murd...@stats.uwo.ca wrote: I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. Could you please post the command line options you used for ffmpeg? I remember I wanted to do an animation, also from .png, and I struggled a lot. Rainer 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Duncan Murdoch Cool enough video. Thanks for sharing. I'm curious - did you do the equations for the knot in R? If so what did they look like, assuming there's no reason you cannot share it. The knot has equation cbind(sin(theta)+2*sin(2*theta), 2*sin(3*theta), cos(theta)-2*cos(2*theta)) The threads in the braid have equation cbind(sin(theta) + sin(2*theta)/2, sin(theta-pi) + sin(2*theta)/2, theta) in the local coordinates of the knot. Overall it's about 100 lines of R code, too ugly to post. Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- NEW GERMAN FAX NUMBER!!! Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Cell: +27 - (0)83 9479 042 Fax:+27 - (0)86 516 2782 Fax:+49 - (0)321 2125 2244 email: rai...@krugs.de Skype: RMkrug Google: r.m.k...@gmail.com [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Playing with rgl: a Youtube video
On 23/12/2009 7:13 AM, Rainer M Krug wrote: On Tue, Dec 22, 2009 at 8:10 PM, Duncan Murdoch murd...@stats.uwo.ca mailto:murd...@stats.uwo.ca wrote: On 22/12/2009 12:49 PM, Mark Knecht wrote: On Mon, Dec 21, 2009 at 4:42 AM, Duncan Murdoch murd...@stats.uwo.ca mailto:murd...@stats.uwo.ca wrote: I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. Could you please post the command line options you used for ffmpeg? I remember I wanted to do an animation, also from .png, and I struggled a lot. Sure. The png files were 1024 by 768, designed to be displayed at 24fps. The command line was ffmpeg -b 240 -r 24 -i movie%03d.png -s xga movie.mp4 The -b option controls the target bit rate. The -r option says how many frames per second, -i includes all the files (named things like movie001.png, etc.), -s sets the output size, with xga being a quick way to say 1024x768, and movie.mp4 is the output file. There are tons of options to change codec, etc., but I found the -b option was the only one I needed to play with. Duncan Murdoch Rainer 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Duncan Murdoch Cool enough video. Thanks for sharing. I'm curious - did you do the equations for the knot in R? If so what did they look like, assuming there's no reason you cannot share it. The knot has equation cbind(sin(theta)+2*sin(2*theta), 2*sin(3*theta), cos(theta)-2*cos(2*theta)) The threads in the braid have equation cbind(sin(theta) + sin(2*theta)/2, sin(theta-pi) + sin(2*theta)/2, theta) in the local coordinates of the knot. Overall it's about 100 lines of R code, too ugly to post. Duncan Murdoch __ R-help@r-project.org mailto:R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- NEW GERMAN FAX NUMBER!!! Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Cell: +27 - (0)83 9479 042 Fax:+27 - (0)86 516 2782 Fax:+49 - (0)321 2125 2244 email: rai...@krugs.de mailto:rai...@krugs.de Skype: RMkrug Google: r.m.k...@gmail.com mailto:r.m.k...@gmail.com __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Playing with rgl: a Youtube video
On Mon, Dec 21, 2009 at 4:42 AM, Duncan Murdoch murd...@stats.uwo.ca wrote: I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Duncan Murdoch Cool enough video. Thanks for sharing. I'm curious - did you do the equations for the knot in R? If so what did they look like, assuming there's no reason you cannot share it. Again, thanks for the diversion. Cheers, Mark __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Playing with rgl: a Youtube video
On 22/12/2009 12:49 PM, Mark Knecht wrote: On Mon, Dec 21, 2009 at 4:42 AM, Duncan Murdoch murd...@stats.uwo.ca wrote: I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Duncan Murdoch Cool enough video. Thanks for sharing. I'm curious - did you do the equations for the knot in R? If so what did they look like, assuming there's no reason you cannot share it. The knot has equation cbind(sin(theta)+2*sin(2*theta), 2*sin(3*theta), cos(theta)-2*cos(2*theta)) The threads in the braid have equation cbind(sin(theta) + sin(2*theta)/2, sin(theta-pi) + sin(2*theta)/2, theta) in the local coordinates of the knot. Overall it's about 100 lines of R code, too ugly to post. Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Playing with rgl: a Youtube video
I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Duncan Murdoch __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Playing with rgl: a Youtube video
On Mon, Dec 21, 2009 at 12:42 PM, Duncan Murdoch murd...@stats.uwo.ca wrote: I've just posted a demo made with the rgl package to Youtube, visible here: http://www.youtube.com/watch?v=prdZWQD7L5c For future reference, here are the steps I used: 1. Design a shape to be displayed, and then play with the animation functions to make it change over time. Use play3d to do it live in R, movie3d to write the individual frames of the movie to .png files. 2. Use the ffmpeg package (not an R package, a separate project at http://ffmpeg.org) to convert the .png files to an .mp4 file. The individual frames totalled about 1 GB; the compressed movie is about 45 MB. 3. Upload to Youtube. I'm not a musician, so I had to use one of their licensed background tracks, I couldn't write my own. I spent a lot of time picking one and then adjusting the timing of the video to compensate. Each render/upload cycle at full resolution took about an hour and a half. It's a lot faster to render in a smaller window with fewer frames per second, but it's still tedious. It's easier to synchronize if you actually have a copy of the music locally, but Youtube doesn't let you download their music. So the timing isn't perfect, but it's good enough for me! Very nice video, Duncan! Paul __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
