VMD-L Mailing List

From: Kenley Barrett (kenley.barrett_at_gmail.com)
Date: Wed Sep 20 2006 - 14:48:59 CDT

Thank you for your replies. I actually don't think that ppmtompeg can be the
problem, because when I tried to create an mpeg using a different trajectory
file, the .mpg was created, and the console output was what I cut and pasted
at the end of this message. However, there is nothing to suggest corruption
of the problematic trajectories. There are two trajectories which are
refusing to make .mpg files, and both of them read into VMD without warnings
and produce images that look fine in VMD. These trajectories also read into
other programs without problems, and the calculations that produced the
trajectories show no other signs of problems.

Is it possible that the size of the trajectories is the problem? They
contain about 200,000 atoms. However, the portion that is visualized in the
movie that I am trying to make is only about 6000 atoms.

I would be grateful for any suggestions on what might be going on. Thank you
very much for your help.

Kenley

FRAME 49 (I): 0 seconds (61242000 bits/s output)
bromine.theory.northwestern.edu: COMPLETED FRAMES 0-49 (0 seconds)
Total time: 0 seconds

-------------------------
*****I FRAME SUMMARY*****
-------------------------
  Blocks: 10660 (9222889 bits) ( 865 bpb)
  Frames: 5 (9223416 bits) (1844683 bpf) (15.4% of total)
  Compression: 7:1 ( 3.3798 bpp)
  Seconds: 1 ( 4.0000 fps) ( 2183168 pps) ( 8528 mps)
-------------------------
*****P FRAME SUMMARY*****
-------------------------
  I Blocks: 20383 (20210196 bits) ( 991 bpb)
  P Blocks: 3757 (1871282 bits) ( 498 bpb)
  Skipped: 3576
  Frames: 13 (22082944 bits) (1698688 bpf) (36.8% of
total)
  Compression: 7:1 ( 3.1123 bpp)
  Seconds: 6 ( 2.0934 fps) ( 1142559 pps) ( 4463 mps)
-------------------------
*****B FRAME SUMMARY*****
-------------------------
  I Blocks: 41609 (21266060 bits) ( 511 bpb)
  B Blocks: 20919 (7422190 bits) ( 354 bpb)
  B types: 3877 ( 326 bpb) forw 4149 ( 355 bpb) back 12893 ( 363
bpb) bi
  Skipped: 5696
  Frames: 32 (28691856 bits) (896620 bpf) (47.8% of total)
  Compression: 14:1 ( 1.6428 bpp)
  Seconds: 34 ( 0.9300 fps) ( 507565 pps) ( 1982 mps)
---------------------------------------------
Total Compression: 10:1 ( 2.1986 bpp)
Total Frames Per Second: Infinite!
CPU Time: 1.194172 fps (2545 mps)
Total Output Bit Rate (30 fps): 35999582 bits/sec
MPEG file created in : /usr/tmp/test_single.mpg

Cleaning generated data, frames, and encoder parameter files
Movie generation complete.

TIME COMPLETED: Wed Sep 20 14:15:42 2006

On 9/20/06, Axel Kohlmeyer <akohlmey_at_cmm.chem.upenn.edu> wrote:
>
> kenley,
>
> most likely your ppmtompeg executable is broken.
> there was a phase where netpbm contained a broken
> version, and many (linux) distributions were shipping it.
> you may want to update that package (or at least replace
> the ppmtompeg command with a newer version).
>
> cheers,
> axel.
>
> On 9/20/06, Kenley Barrett <kenley.barrett_at_gmail.com> wrote:
> > Dear VMD community,
> >
> > I am trying to make an mpg movie out of an AMBER trajectory using VMD. I
> > have done this before without difficulties; however, for some reason
> with
> > this trajectory it is not working. No error messages are displayed but
> at
> > the end of the process there is no .mpg file. This is the message in the
> > console at the end of the movie generation process:
> >
> > Info) Rendering current scene to
> > '/tmp/plug_sim_an15_500_mid.0499.ppm' ...
> > Info) Rendering complete.
> > No frame format conversion necessary, continuing.
> > Converting frames to MPEG-1 video format
> > ppmtompeg /tmp/plug_sim_an15_500_mid.par
> > Cleaning generated data, frames, and encoder parameter files
> > Movie generation complete.
> >
> > I would be very grateful for any suggestions on what I might be doing
> wrong.
> > Thank you in advance for your help.
> >
> > Kenley Barrett
> >
> >
>
>
> --
> =======================================================================
> Axel Kohlmeyer akohlmey_at_cmm.chem.upenn.edu http://www.cmm.upenn.edu
> Center for Molecular Modeling -- University of Pennsylvania
> Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
> tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel: 1-215-898-5425
> =======================================================================
> If you make something idiot-proof, the universe creates a better idiot.
>