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VMD was developed by Sierra On-Line (now Sierra Entertainment) in the 1990s to store video featured in their CD-ROM video games. Some games that use VMD files besides Phantasmagoria include Betrayal in Antara, SWAT, RAMA, Shivers, Lighthouse, The Last Dynasty, and Torin's Passage. You will most likely only encounter a VMD file if you have installed a game that utilizes the TGV format on your computer. Depending upon your machine and your settings, in a little while you will have your movie.VMD file open in VideoLAN VLC media player 3

When you have the settings as you like them, click “Make Movie” and wait. “Image Smoothing” is what it sounds like generally it is better to set your render resolution high (in the Graphical Representations window) if you have the graphics power and the time. The other choices dictate some rendering options.

Caution: your trajectory will only play if either “ Trajectory ” or “ Trajectory Rock ” is chosen - the first two choices will display a single frame of the molecule (but it will rotate them as noted).

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The “ Movie Settings ” pull-down sets the direction of the trajectory. If you would like to do something like this, contact Prof. It does make animated GIF files, however, which may make it worth the trouble.

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ImageMagick is another possible renderer, but it is quite extensive and requires the installation of a lot of extra software using macports. The other thing you should do is resize your VMD display window to approximately 2:1, as the DVD setting will output at this geometry, and if your VMD window does not start at this geometry, the result will look squashed. Type which ffmpeg The response should be /Users/student/bin/ffmpeg (with your particular directories listed) In either case, open a new terminal window and make sure it worked properly. The first cat command appends, the second one creates) Enter the following three lines at the prompt: profile: No such file or directory, the file does not exist and you must create it. Enter the following three lines at the prompt:ī) if it returns ls. Do not type 'cntrl-D'!Ī) if it lists the file, it exists, and you will append to it.

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Please note' ' -D' means press the > key plus on your keyboard. If you have it, you will append a line to it. You may have a file called '.profile' in ~/ (home directory).

now you have to tell your terminal/shell/VMD where to find it.

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You can run this program by giving the full path: ~/bin/ffmpeg however VMD must be able to find it too.

make the program file run-able: chmod 755 ~/bin/ffmpeg.

move the ffmpeg binary (program) there (this assumes that it went to your 'Downloads' directory): mv ~/Downloads/ffmpeg ~/bin.

Users/yourname/bin (you may also refer to this as '~/bin').

make a directory to store this and other programs.

(remember, what you enter into the terminal is in red ) Make sure to quit VMD before you do this.

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Download the ffmpeg binary, and follow these steps in a terminal window (not tkcon!) in order to get it to work. The best way to make a good-looking movie is to select 'MPEG-2 NTSC DVD ( ffmpeg ). This is the most hassle to work out, as the defaults really leave a lot to be desired. In fact, this has recently been re-written to use the computer's GPU, which really speeds things up. (Under OS X and UNIX (linux), the options show below are available.) Generally, “ Internal Tachyon ” is the easiest to use. This is the least desirable option, as you must leave the VMD window on top, and uncovered by other windows. “ Snapshot ” uses a screen grab of the VMD window. The first pull-down sets the rendering engine. You should set this to a directory you can find easily, both to delete any leftover files, and so you can actually find your movie! “Set working directory” dictates where both the finished movie and the temporary render files are written. Generally, we won’t change the “ Movie Duration ” setting at all. Take a few minutes to make sure you scene is the way you want it before you adjust any Movie Maker settings. It is easy to fix these things using the main VMD window rather than the Movie plugin itself. What you must do however, is set up your trajectory (representations, resolution, speed, etc) before you start making movies. Luckily, this plugin is very easy to use.

The original documentation for this plugin is here.