quicktime frame cut

Scripting Forums AppleScript | Mac OS X
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#1

Hi all,

maybe a stupid question, but i cant find a solution yet

i like to cut in an apple script with frames, like i do in miliseconds,

set time_scale to time scale
	set i to time_scale * 792.2994
	set o to time_scale * 812.5988
	select at i to o
	trim

is there a command to set i and o in frames instead of the time?

thx jim

#2

Hello.

I think you have to convert time to frames your self, which shouldn’t be to much of a job, unless you are doing this in some app that support frames in its dictionary.

I think you would know that you could use something like this to get at the next frame:
Pseudo!

The framrate denotes of course the number of frames per second.
Best regards

McUsr

#3

Hi,

i have the exact frame in and out I calculate this in the i and o in seconds,
but quicktime has a problem with the time in seconds, i noticed sometimes it drops the last frame sometimes not.
but i have to be exact with my trim … so it would be easier for me to use the frames, because i have the exact in and out. seems there is no command for use frames instead of seconds?

Thx Jim

#4

I only have quick time standard edition:

The dictionary states that you move the frame by steps.

But the “Document Specification” in Quick Time Player Suite of the dictionary operates with a byteRate per second,
Maybe you have to go as deep as calculating frames per second by (nr of bytes per frame / bytes per second).

This should be a pretty popular scripting topic. I believe there must be some published results of this somewhere.

Forums, Mailing lists etc. and maybe a guide to scripting it as well.

I’m sorry I cant help you with this. But There should some documentation somewhere.

Best Regards

McUsr

#5

Thx a lot for your help!!!

tried to search the forum, but nothing comes up which helps … so i started this post…maybe someone knows how to deal with …lets wait and see

again thx for your help!!

Jim

#6

Hi,

you have to calculate the time by given framerate, duration and time scale.
Search the forum for framerate, you’ll find some sample code

#7

Hi,

so that is what i was afraid off, there is no way to use a frame count from an FinalCut xml in apple script
the only way is to calculate the frames in time, which i was already doing, am i right here??

but i wasnt happy about it, like i said, the quicktime is sometimes 1 frame shorter…dont know if this is a quicktime bug or not.