Eric Pettersen wrote:

Hi Mingfeng, It hadn't occurred to me that one might want more than a 1-second delay per frame (which is what you get when the slider is all the way over to the left). Maybe I can do something about that in the future. You can define a script to avoid all that clicking. Use the Movie dialog's Per-Frame->Define Script... menu entry to bring up a panel that allows you to define a script to run at each frame. You can define a script of Chimera commands or Python commands. For what you describe, Chimera commands can do the job. In the "Script" field just enter "copy file <FRAME>.png png". When the command is executed, "<FRAME>" will be replaced with the current frame number. You might want to check the "Use leading zeroes..." check button so that the files sort into the correct order when you 'ls' them. Then just run your trajectory (probably with the "Loop" button checked off).

Bravo! This command rocks. Thanks! I should forward this to the mailing list; someone else must want to know it. Mingfeng

--Eric

On Jan 31, 2006, at 11:16 AM, Mingfeng Yang wrote:

...

Hi, Eric,

I did get your email. I am sorry that I didn't get back to you in time. The position of the slider does control the playback rate, but even the slowest is not slow enough for my case. I want at least a second pause after each snapshot, so that people can see the conformational change clearly. Finally, I just export every snapshot as png image and make a gif movie by connecting all the snapshots. Though I have to spend more time on it, this way gave me better picture quality.

Can I define a script which automatically export each frame in the MD trajectory as png image? It's really a pain to click "save as" again and again.

Eric, you are such a nice person. Thank you very much!

Mingfeng

Eric Pettersen wrote:

...

Hi Mingfeng, Did you get my mail where I attached the two MPEG-4 files?

--Eric

On Jan 27, 2006, at 2:01 PM, Mingfeng Yang wrote:

...

Eric Pettersen wrote:

...

Hi Mingfeng, You can use the main interface's playback slider to change the rate that frames are played back. With the slider to the far right there is no delay between frames, with it to the far left there is a one-second delay between frames. This interacts with recording just like you would expect -- extra frames get recorded during the delay which produces a movie with the same apparent playback speed as with a non-recorded playback.

Hi, Eric,

Thank you for your replay! But actually, the recorded playback is more faster than the non-recorded playback. I tried the slider at different position many times. BTW: I save the movie as mpeg format. As usual, gentoo linux, chimera buld 2186.

Mingfeng