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Cropping DivX movies to remove black bars on widescreen films
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richks
Junior Member
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29. March 2005 @ 06:03 _ Link to this message    Send private message to this user   
Hi all,

I'm sure this is fairly easy to do, but I can't seem to figure out a good way to crop out the black bars on a DivX movie to make it proper 16:9. I want to do this so that it plays better on my XBox on my 16:9 TV without zooming and losing picture quality. What's the easiest way to do this for a dope like me?

Rich
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shiroh
Account closed as per user's own request
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29. March 2005 @ 09:48 _ Link to this message    Send private message to this user   
i use avisynth.

or you can try VirtualDub.

you need to reencode.
The_OGS
Senior Member
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30. March 2005 @ 18:57 _ Link to this message    Send private message to this user   
Quote:
...crop out the black bars on a DivX movie to make it proper 16:9
Hmmm...
Okay, I was just talking about this to another guy - widescreen movie, 2.35:1, 704x304 AVI.
If I had it to do over again I would make it 672x304 (this sneaks it down to 2.20:1 at the cost of a dozen pixels each side :^)
But anyway the point is, the 'black bars' aren't part of the DivX movie - they are blank empty blackness, where there is no picture.
You cannot 'crop' the black bars...
Like Shiroh says, if you want a different aspect ratio you must re-encode ie. my example above, where you're actually cropping width to increase apparent height.
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richks
Junior Member
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30. March 2005 @ 21:32 _ Link to this message    Send private message to this user   
The footage I'm wanting to crop is a 16:9 presentation captured (not by me) from a 4:3 broadcast with black bars added at the top and bottom by the broadcaster and their logo stamped over it in the bottom right corner.

So, yes, the black bars are part of the movie and are encoded in the video.
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shiroh
Account closed as per user's own request
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31. March 2005 @ 06:03 _ Link to this message    Send private message to this user   
did you noticed, some movies (official dvd) are 16:9 letterboxed ?

ok, here is what i would do.
load it up on vdub.
filter > null transform > crop as necessary.
resize to 1:1 aspect ratio

install avisynth
open notepad
and type

avisource("C:\where\filename.avi")
crop(2,2,-2,-2) >> according to the number in vdub
lanczosresize(640,352) >>for example, do some calclation

save as .avs

load it up in vdub.
set fast recompress
no audio. ( do this later with an audio encoder)
compression > xvid 1.1 beta1 > 2pass > default settings are good enough.

encode audio

mux

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