Hi Paul, Sound very likely that the quality degradation is from the movie file compression. The movie compression algorithms use a perfect image every tens of frames and differences that are compressed between those frames I think. I suspect MPEG1 is one of the worst because it is the oldest format. You may see some improvement using the MPEG4 based codecs (mp4, avi, and mov movie command mformat values). The movie encode command two options that control compression are "bitrate" and "qscale". The bitrate option pertains to fixed bitrate compression schemes while qscale refers to variable bit rate (more modern) compression methods. In your old Chimera version I believe the default is bitrate 2000 Kbits/sec which gives pretty horrible quality but was chosen to improve the chances of PowerPoint being able to play the movie. Current Chimera daily builds instead use qscale 8 as the default which gives quite good quality but much bigger movie file size. If you really want the best possible quality and giant movie files is not a problem use qscale 1. http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/movie.html Tom
Hello,
I am using chimera alpha version 1.3 (build 2577) running in linux (sled11) to make a movie using POV-Ray.
The quality of the first few frames is stunning but thereafter becomes fuzzy around the edges of the molecule. Is there a way to fix this so that the entire movie is as clear and nice as the first few frames? Is there something wrong with my settings? Is what I'm seeing an artifact of mpeg compression?
I am using the following POV-Ray settings to make an Mpeg1 movie
Quality 11
Antialias: true
Antialias method: recursive
Antialias depth: 3
Antialias threshold: 0.3
Jitter: True
Jitter amount: 1.0
Transparent background: false
Wait for POV-Ray to finish false
Keep input files: false
Thanks for the help!!
Paul