deleting every other line in an image

[Josh Mellicker]

This is correct.

"i" = interlaced
"p" = progressive

Many people shoot in non-interlaced modes nowadays, but some don't,  
and there is "legacy" footage...


On Nov 13, 2007, at 4:05 PM, Luis wrote:

> I think 1080i is interlaced, 1080p is not.
>
> Cheers,
>
> Luis.
>
>
>
> Stephen Barncard wrote:
>> And you don't have 1080p available from the source?  That wouldn't  
>> be interlaced, methinks.
>>> Thanks!
>>>
>>> This is exactly what I needed!
>>>
>>>> just curious: why do you want to eliminate every second line of  
>>>> an image?
>>>
>>>
>>> Video cameras interlace two images taken a fraction of a second  
>>> apart into a single frame, leading to interlacing artifacts (a  
>>> serrated edge on fast moving objects).
>>>
>>> Your script will eliminate one of the fields, thereby isolating a  
>>> single "time slice" of reality.
>>>
>>> This comes at the expense of 50% loss in vertical resolution.  
>>> Luckily, an HD image has 1080 pixels to start with, so 540 pixels  
>>> vertical is plenty for web use.
>>>
>>> Thanks, can't wait to try it!
>>>
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