Anindito Sen wrote:
Hi Tom
How can we make a movie (not morphing) out of several still snaps (.jpg) saved from of many density maps. using chimera.
Thanks qandy
Dr. Anindito Sen (Ph.D) Research Associate , Dept. of Biochemistry and Molecular Genetics University of Virginia Box 800733 Charlottesville, VA 22908
Hi Qandy, You can create a movie directly from a set of images using the ffmpeg executable included in the Chimera distribution. When you make a movie using Chimera it runs the ffmpeg executable to make the movie file and the options used are printed to the Chimera reply log (Favorites / Reply Log). For example, in the reply log I see ARG_LIST IS ['-r', '25', '-i', '/tmp/chimovie_JgKl-%05d.ppm', '-y', '-f', 'mov', '-b', '2000', '-bufsize', '200', '/Users/goddard/chimera_movie.mov'] Movie saved to /Users/goddard/chimera_movie.mov so the ffmpeg command used was: ffmpeg -r 25 -i /tmp/chimovie_JgK1-%05d.ppm -y -f mov -b 2000 -bufsize 200 You could run a similar command from a shell to encode a movie outside of Chimera. The files are specified by the "-i" option. In the example they are ppm format but jpg will work too. The %05d means that the file names ended in a 5-digit number with leading zeros (e.g. chimovie_JgK1-00000.ppm, chimovie_JgK1-00001.ppm, ...). The -r option indicates frame rate (25 frames per second). The -f option is output format (mov = quicktime). The -b option is bit rate (Kbits/sec) and controls output quality. The -y option means to overwrite the output file if it already exists. For complete ffmpeg options see online docs: http://ffmpeg.mplayerhq.hu/ffmpeg-doc.html The Chimera copy of ffmpeg is in the distribution in chimera/bin (or on Mac in Chimera.app/Contents/Resources/bin). Tom