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View Full Version : Deinterlacing using de-blocking filter?


zeeman_88
15th December 2008, 19:00
Can the de-blocking filter used as de-interlacing filter in h.264?

Basically, I want to use a “strong” vertical filtering and normal horizontal filtering by controlling the alpha and beta for the vertical and horizontal de-blocking process…

Anyone has any idea how to do that?

:thanks:

Guest
15th December 2008, 19:03
The deblocking operates only on block boundaries, so it's highly unlikely to be useful for deinterlacing.

Sharktooth
15th December 2008, 19:15
alpha and beta are NOT related to horizontal and vertical... but strenght and bias... :search:

zeeman_88
15th December 2008, 20:28
Sharktooth,

As far as I understand, the de-blocking process is done vertically then horizontally by the same filter, i.e. the same alpha and beta.

What I am asking, is it possible to use different strength and bias (alpha and beta) for the vertical and horizontal de-blocking filter?

wyti
15th December 2008, 21:14
no the only parameters you can tweat are alpha and beta (stregth and bias), you can't change vertical / horizontal strength
but even if you succesfully can do that (and i really doubt that the standarts allow this), you will mask the interlacing with a strong vertical blur.
The best way to deinterlace is to use avisynth to deinterlace your source, there are many filter that can do that, and you won't kill details of your source.

Sagekilla
16th December 2008, 00:18
What you are suggesting is nothing more than Blur(0,1), which kills details. You're better off just deinterlacing with something else in Avisynth as wyti recommended.