I am trying to plot and make movie for the NSNSTOHMNS Gallery example using the support scripts provided. On using the VisIt support scripts as given in the example, I do get some figures named [rho_000000000.png, ... , rho_000000231.png], but they are all usually black screens or look like tv white noise.

Details of the simulation:

I ran it on a cluster with 8 cores.

My run data for mp_Psi4_l2_m2_r300.00.asc and rho.xy.h5 and the sample Results given in the gallery example are of the same order of magnitude(although not identical). So I doubt any problems on the data generation end.

I am using VisIt version 3.0.2 and FFMPEG version 4.2.1, and am loading python/3.7.3.

I get these when I run the command visit -cli -nowin -s rho.movie.py 

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 

...

...

VisIt: Message - Rendering window 1...
VisIt: Error - The compute engine running on crcfe01.crc.nd.edu has exited abnorm
ally.
VisIt: Error - Scalable Render Request Failed (VisItException)
viewer: Obtained null data reader for rendered image for engine crcfe01.crc.nd.ed
u.

Running: engine_ser3.0.2 -idle-timeout 480 -host 127.0.0.1 -port 5600

VisIt: Message - Rendering window 1...
VisIt: Message - Saving window 1...
VisIt: Message - Saved rho_000000000.png

...

...

s/nsnstohmns_in_saeng/output-0000/nsnstohmns/rho.xy.h5".
VisIt: Message - Closed the compute engine on host crcfe01.crc.nd.edu.
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
  configuration: --prefix=/afs/crc.nd.edu/group/mathews/tools/ffmpeg/4.2.1 --disable-x86asm
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
Unrecognized option 'crf'.
Error splitting the argument list: Option not found
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
  configuration: --prefix=/afs/crc.nd.edu/group/mathews/tools/ffmpeg/4.2.1 --disable-x86asm
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
Input #0, image2, from 'rho_%09d.png':
  Duration: 00:00:09.28, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgb24(pc), 640x640, 25 fps, 25 tbr, 25 tbn, 25 tbc
Unknown encoder 'theora'

Any help would be greatly appreciated.

Thank you,

best regards,

Atul Kedia

Physics Graduate student

University of Notre Dame.