On Sun, 2005-02-20 at 08:41 -0800, Steven Boswell II wrote:

> Some time ago, there was a discussion on 4:1:1 chroma
> subsampling in DV files of 3-2-pulldown sources, and
> how the color needed a special line-switch in order to
> be completely accurate.  (Lines 2 and 3 of every group
> of 4 lines have to be switched, IIRC.)  

I must have missed that thread - since 4:1:1 isn't vertically
subsampled, why would the chroma have a different vertical pattern than
the luma?

If I recall (I haven't used it in a long time) yuvkineco doesn't support
4:1:1.  I think when I did use it I converted to 4:2:0 first.  I always
meant to add it but never got around to it.  (And I won't anytime
soon :))  You're not referring to an artifact of yuvkineco assuming
4:2:0 input are you?

> Is there any interest in such a modification?  I know
> I would certainly appreciate it.  I've tried to
> understand the source code to yuvkineco, but no one
> seems to comment their code as thoroughly as I comment
> my own. :-)  This color-interlacing problem is the
> last remaining artifact in my video, and I'm keen to
> squash it.

I have some videotapes left to convert, so I'd be interested.  But I
barely have time to lurk on this list, much less code...

Dan




-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
Mjpeg-users mailing list
Mjpeg-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mjpeg-users

Reply via email to