[xine-bugs] [ xine-Bugs-1091413 ] deinterlacing broken with xvmc and xxmc

[SourceForge.net <no...@so...>]

Bugs item #1091413, was opened at 2004-12-26 20:06
Message generated for change (Comment added) made by mroi
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=109655&aid=1091413&group_id=9655

Category: video output problems
Group: None
>Status: Pending
Resolution: None
Priority: 5
Submitted By: David Banz (ashitaka)
Assigned to: Nobody/Anonymous (nobody)
Summary: deinterlacing broken with xvmc and xxmc

Initial Comment:
While tvtime deinterlacing works fine in xine-ui when
using the xv driver, it does not work properly using
xvmc and xxmc drivers.

This is the tvtime config:
tvtime:method=LinearBlend,cheap_mode=1,pulldown=0,use_progressive_frame_flag=1

To be exact, when I start xine-ui with
xine dvd:/
to play a DVD which starts in interlaced mode (xine-ui
is configured to deinterlace by default), the vertical
resolution is cut in half, resulting in a rather blocky
image, which looks more like "LineDoubler" than
"LinearBlend".

Furthermore, the same problem happens using kaffeine
0.5 as frontend, only in this case it also happens when
using the xv driver, not just with xxmc and xvmc.

I suspect something is not initialized properly on
startup. It may be a problem with the frontends, but I
am not entirely sure.

My system is as follows:
- GeForce4Ti 4200 using NVidia driver 1.0-6629
- SuSE Linux 8.2
- standard distro Kernel 2.4.20
- XFree86 4.3.0
- KDE 3.2.3
- xine-lib 1.0
- xine-ui 0.99.3
- kaffeine 0.5
- libXvMCW 0.9.3


----------------------------------------------------------------------

>Comment By: Michael Roitzsch (mroi)
Date: 2004-12-27 17:01

Message:
Logged In: YES 
user_id=552060

I guess you are running into a architectural limitation of X[xv]MC here: 
When you use these plugins, any MPEG content (what a DVD happens to 
be) is not decoded by xine, but the (mostly) undecoded data is passed to 
the graphics card, where the final decoding is done. Unfortunately, this 
means the xine engine will never see the final decoded image and thus 
cannot do any deinterlacing on it. What you might be seeing is the 
hardware deinterlacer of your card jumping in. 
 
Summary: If you want software deinterlacing, you cannot use hardware 
decoding, so use Xv instead of X[vx]MC. 
 
Michael 
 

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=109655&aid=1091413&group_id=9655