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Old 25th September 2003, 21:26   #1  |  Link
kevina
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Join Date: Jun 2003
Posts: 71
New Filter: Interpolating Bob

I just released a new filter, Interpolating Bob. You can find it at http://kevin.atkinson.dhs.org/ibob/.

The filter works identically to the Avisynth builtin Bob filter except that it uses linear interpolation instead of bicubic resizing.

The advantages of IBob over the builtin Bob is:

1) The lines of the dominate field are untouched. In particular
Code:
assumetff()
orig = last
ibob()
assumetff().separatefields().selectevery(4,0,3).weave()
compare(last,orig)
Will report 0 difference between the original and the bob than unbobed
video (when the video format is yuy2, with yv12 the chroma will be
slightly different). With the builtin bob this is not the case.

2) A bit faster than the builtin bob.

In can be made even faster by 1) dynamically compiling key parts to
reduce register pressure and take advantage of the "base + index +
displacement" addressing mode, and by 2) using vector extensions.
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