[Chimera-users] control the movie play speed
mfyang at gmail.com
Tue Jan 31 11:52:01 PST 2006
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
> 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!
>> Eric Pettersen wrote:
>>> Hi Mingfeng,
>>> Did you get my mail where I attached the two MPEG-4 files?
>>> 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.
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