On Wed, 24 Jun 2009, Roman V Shaposhnik wrote:
> why? Don't the tools handle reverse telecine of NTSC material properly?
No.
yuvkineco is top field first only. no effort has been made to fix
that and the author hasn't been heard from in eons.
and using yuvcorrect to shift the fields introduces what I call
a phaseshift - you're basically moving the top field of Frame A into
one of the fields of Frame B and so on. Temporal order is preserved
but the frames now have fields from two different frames and this
effectively destroys the 2:3 pattern which makes yuvkineco work harder
and err more often. yuvkineco will produce *something* of course.
But folks wonder why they have to edit the output of yuvkineco...?
Anyhow there was a big discussion several years ago when I cared
about such things - yuvcorrect top_forward is harmful.
and with that I'm going to go back into hibernation.
Steven Schultz
------------------------------------------------------------------------------
_______________________________________________
Mjpeg-users mailing list
Mjpeg-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mjpeg-users
