Aspect Ratio and file extension

Using the AC_Quicktime.js:
If I have a .mov file and change the extension to .tst or something ambiguous quicktime can still play the movie. If however I put the parameter "scale","aspect" quicktime seems to no longer be able to tell that this is a .mov file.
Any thoughts? Is there another parameter I need to use to make it work, or will I need the proper file extensions to play a movie in aspect mode?
Thanks.

I changed the file extension so when I upload the file to the active directory that gets sync'ed with the back end software there would be no partial files.
As intended:
Step 1) Upload the file with its actual file extension.
Step 2) Change the extension to .tst to let the back end system know it's ready for download.
Plenty of work arounds here for me obviously, just they require an extra step. For example.
Step 1) Change extension to .tst
Step 2) Upload File
Step 3) Change extension to actual extension so backend knows its ready to download.
Ya the tofit reacts the same way, I haven't tried specifying the third scale parameter option, but if I leave the scale parameter out QT can play the movie with no problem (just not expanding with different resolutions). I just wondered if there was another parameter value pair I needed to make it not worry about extension, it's not a problem I can't get around though.
Also, not sure this will make a difference, but i've been using a width and height of 100%.

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Thanks for the details Rick.
Thanks for the insight on #1
Ref #2, You should never change the interpretation of Pixel aspect ratio on footage unless you know for a certainty that it is wrong. For example, open Photoshop or Illustrator and create a new document that is 720 X 480 pixels and AE will always interpret the image as rectangular pixels because that is a standard rectangular pixel frame size.
Unless you specifically created the image in Photoshop with rectangular pixels it is square pixels so the interpretation must be changed to avoid distortion.
--Did you mean to write:
Unless you specifically created the image in Photoshop with SQUARE pixels using a rectangle layout? I am not trying to bust your blz here, I am trying to understand the unknown. (for me)
So it may very well be AE mis-guessing the footage and the Upper first is a mistake on AE's part and I need to test it to find out? On that note...
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If the field order is reversed then motion will be in the right direction then reverse, then go back to the right direction. ---I did not understand? Are you referring to Upper and Lower reverse? Direction, as in fwd and back in Time line? Sorry unlclear on my end...
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@Dave- You -
At 1080, a lot of footage is interlaced, and evidently your camera made interlaced footage
Me- How do you know? because of the 2nd pic and upper field first indication?
You-Even if you know for a fact that it was shot 30p, the camera captures the entire frame... but it records it as two fields. They give it a fancy name: Progressive Segmented Frame.
Me- Is this typical false advertisement of the sales divison of brands like not telling you what CMOS or CCD is in a cam just slapping HD 1080p on the side of the box?
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Me- Won't that be a problem mis leading AE on an interpret?
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Best
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Leo Huang
TechNet Subscriber Support
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Welcome to the Apple Communities.
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Aspect Ratio and file extension

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