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CANCEL VMD MOVIE HOW TO
CANCEL VMD MOVIE MOVIE
CANCEL VMD MOVIE INSTALL
CANCEL VMD MOVIE UPDATE
CANCEL VMD MOVIE SERIES

Apple uses H.264 encoding, which is MPEG4 part 10(!). Note the settings: Constant quality, frame rate same as source (constant). įinal conversion via HandBrake (not necessary if the H264 works!) If you are interested in using ffmpeg for other tasks, you can see all the encoding/decoding capabilities by issuing the command ' ffmpeg -codecs | more ' in your terminal. You can view it in VLC if you want to make sure the quality is OK (and compare it with the VMD default). A 1000-frame, 30 second video file from this step should be 3-4 MB in size. The "-an" switch turns off any audio (not really necessary but sometimes strange audio can be unintentionally introduced). These assure the quality of the individual images is maintained. The "sameq/qscale" switches are what is important here, and what VMD does not do. ffmpeg may have this compiled in (and it produces much smaller files). MPEG-4 Part 2 (mpeg4) is a decent encoder, but H.264 is what Apple likes. A8.%05d.ppm -vcodec mpeg4 -an -qscale 0.

CANCEL VMD MOVIE SERIES

Of course change it to fit your file names this would work for a series of ppm files as A8.00001.ppm, A8.00002.ppm … A8.00999.ppm:Ĭlapeyron $> ffmpeg -an -i. In that directory, issue a ffmpeg command similar to this. In the directory where you made your VMD movie, there should be a number of files with. These pages may be useful to you: ffmpeg codec documentation ffmpeg tutorial. Here is where you are able to really improve the quality of your movie, depending on how recent your ffmpeg is.

CANCEL VMD MOVIE MOVIE

View the VMD movie in VLC so you know what VMD gives you. ppm), however, which is why the " Delete Image Files " switch needs to be unchecked. The movie that VMD makes is NOT the one we want we do want the image files (extension. If the process seems to hang, look at your terminal/VMD console and see if it is asking for some sort of response (hitting should do the trick). Now you can click " Make Movie " and wait for it to complete. You should not have to change anything else like " Rotation Angle " or " Step Size ". This should work if it ends up not working, then you do not have ffmpeg installed (see first step, above).ĭon't forget to set your working directory to someplace you can actually see on your computer, and is also a place you can afford to have a bunch of files stored in ( ~/tmp ? ~/Desktop/tmp ?). Movie Settings (Lower 1/2): uncheck " Delete Image Files "! You may add descriptive text here too.Renderer: " Internal Tachyon " or " Tachyon " (internal is safer, but perhaps the external is faster).Using the Movie Maker tool ( Extensions -> Visualization -> Movie Maker ), choose the following settings: If you do it after you have already opened the app, your adjustments will not be reflected in the app and you will have to quit VMD to start again. Adjust the length of your trajectory BEFORE you open up the Movie Maker app.

Also remember that colors will lose some of their pop going to video. You can try them, but you will probably be disappointed.

Transparent representations such as "glass" will not render that well using the Tachyon renderer.

You must do this for EVERY representation you have defined for your system. Experiment with that setting this to 5 for most representations, or 10 or more for fast-moving representations (such as "Lines") will make the video smoother. Near the bottom of the window is " Trajectory Smoothing Window Size ".

In the " Representations " menu, there is a " Trajectory " tab.

CANCEL VMD MOVIE HOW TO

If you don't know how to do this, go back to the appropriate page and figure it out.

CANCEL VMD MOVIE UPDATE

If you are using the "secondary structure" coloring scheme, make sure you open a TKcon and use ' sscache ' to update the representation every frame.

A 1000 frame DCD will run for approximately 30 seconds. Load your trajectory, and adjust the placement of your system in the window using the 'T' and 'S' and 'R' key commands. FIRST: run VMD from the command line, specifying the window size with appropriate dimensions:ĭo this in a terminal window you can dedicate to VMD, as this window becomes the VMD console (where messages go). I will cover other things which are important for the video file. I'm assuming you know how to produce a trajectory, and produce the representation(s) you want. This is specifically showing how to produce a quality 1024 x 768 iPad2 retina-type movie.) (This will work for *any* device, if you think about things you might modify.

VLC (can be used to play video, even if iPad won't).

Handbrake (find it HERE ) Depending on your version of OS X, you may need to grab an older version.

vmd of course (relatively new, 1.8.x or above).

CANCEL VMD MOVIE INSTALL

ffmpeg (test with " which ffmpeg " install with fink or get a binary from ).