VMD-L Mailing List

From: Michael Murray (mimurra3_at_vt.edu)
Date: Thu Aug 01 2002 - 23:52:26 CDT

Mr. Stone,

Yes, I we are using version 10.6. Maybe we should be trying one of the 9.x
versions?

On 8/1/02 9:00 PM, "John Stone" <johns_at_ks.uiuc.edu> wrote:

>
> Hi Michael,
> I haven't encountered this problem with the 9.x versions of NetPBM, but
> I downloaded NetPBM 10.6 today and I'll see if I have the same problem you
> describe. You said you're running the latest version, so I assume you've
> got 10.6 then?? Please let me know the exact version, otherwise we may
> waste valuable time trying to reproduce the problem with a different
> version of the code.
>
> Thanks,
> John Stone
> vmd_at_ks.uiuc.edu
>
>
> On Thu, Aug 01, 2002 at 03:07:25PM -0400, mimurra3 wrote:
>> All,
>>
>> I am having issues getting vmdmovie to create an mpeg file. The script seems
>> to run just fine. It creates the rgb files and then converts them to ppm
>> without problems. However, ppmtompeg creates an mpeg file of zero size. I
>> saw a previous message to the list with the same problem but we are the most
>> recent version of Netppm and version 1.7.1 of VMD under Linux.
>>
>> I changed the script to keep the rgb and ppm files. I looked at the ppm
>> files
>> using GIMP and they definitely contain pictures. When I tried running
>> ppmtompeg from the command line using the script created by VMD I don't get
>> an
>> error message. Instead, it outputs only
>>
>> MPEG ENCODER STATS (1.5b)
>> ------------------------
>> TIME STARTED: Thu Aug 1 13:06:22 2002
>> MACHINE: unknown
>> FIRST FILE: /home/mimurra3/movie_stuff/test/untitled.0000.ppm
>> LAST FILE: /home/mimurra3/movie_stuff/test/untitled.0179.ppm
>> PATTERN: ibbpbbpbbpbbpbb
>> GOP_SIZE: 15
>> SLICES PER FRAME: 1
>> RANGE: +/-32
>> PIXEL SEARCH: HALF
>>
>> and again creates an empty .mpg file. Any help would be greatly appreciated.
>>
>> thanks,
>> Mike
>>
>> --------------------------
>> Michael Murray
>> Virginia Polytechnic Institute and State University
>> Biochemistry Department
>> 201 Engel Hall
>>