Getting the height and width of a videoclip

[Richmond Mathewson]

On 17/01/2010 18:38, William Ziegler wrote:
> I have a stack that allows teachers and parents to attach videos for 
> students to write sentences about. These videos are created with 
> various devices and thus have different heights and widths.  I 
> currently store these videos in a default folder, and use a 'Player', 
> which I probe for the Height and Width to resize large clips to a set 
> maximum size.
>
> Teachers have asked if I could package all the videos into each stack 
> to make it easier to send home and/or share lessons with other teachers.
>
> I am having a hard time manipulating videoclips with the PLAY command 
> as compared to using a 'Player' with external video files.
>
> Player example:
>
> create player "myPlayer"
> Set the filename of player "myPlayer" to fName
> put the width of  player "myPlayer" into realWidth
> put the height of player "myPlayer" into realHeight
> if the height of player "myPlayer" > 330 then
> put 330/realHeight into theRatio
> set the height of player "myPlayer" to theRatio *RealHeight
> etc.
>
> I know I can set the RATIO of stack based videoclips, but how can I 
> find their initial size in order to know if their image will be too 
> large?
>
> Is my best option to store the clips in the stack, temporarily export 
> them to the hard drive when needed,use the file in a 'Player', then 
> delete the file when finished.

NOT REALLY:

1. You cannot (as far as I know) export videoClips or audioClips that 
are embedded in a stack

(actually this is an old chestnut I have been banging on about for ages 
and ages)

2. If you bung all your video files in a stack the RAM overhead will 
skyrocket, and on machines
that don't have buckets of RAM everything will grind to an untimely halt.

What you could do (as I did when faced with a similar problem with about 
200 videoClips about
7 years ago) is pop each videoClip into its own substack; that way all 
your videoClips won't be clogging
up the RAM at once; as you need each clip you can load the substack, 
play the thing, and then
close it - thereby offloading the videoClip from the RAM, freeing RAM 
for the next one.

>
> Bill_______________________________________________
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