[MPlayer-users] De-interlacing and YUV420 pixels

[Reimar Döffinger]

On Wed, Nov 20, 2013 at 07:48:24AM -0800, James Board wrote:
> If so, will the pixels stay in 422 format the for every step in the process, or 
> does the kerndeint filter internally convert them to 420 (in which case, it would 
> be pointless to convert them to 422)?

Kerndeint supports yuy2, which is 422.
Also, if you add -v then you'll see if there are additional conversions:
Trying filter chain: kerndeint vo
For example means no conversion, otherwise there would be a scale filter
in there.
In addition even without -v, the scaler should tell you what it does,
e.g.:
[swscaler @ 0x7f6863203000]bicubic scaler, from yuv420p to yuyv422 using MMXEXT
-vf format=yuy2,kerndeint
should probably work for 422 kerndeint.