[MPlayer-users] field sequential to over/under stereo playback

[Francois Dion]

On Tue, Sep 9, 2008 at 3:52 PM, Francois Dion <francois.dion at gmail.com> wrote:
> On Tue, Sep 9, 2008 at 2:50 PM, Reimar Döffinger
> <Reimar.Doeffinger at stud.uni-karlsruhe.de> wrote:
>> On Tue, Sep 09, 2008 at 02:10:38PM -0400, Francois Dion wrote:
>>> Anyway, as far as tinterlace/tfields and il, that's all for the
>>> interlacing which I'm only partially succesfull in that I can have one
>>> instance of mplayer displaying odd fields, and another the even fields
>>
>> No, you can make one MPlayer output both and combine them with -vf tile.
>
> Ok, that's great. I had never heard of the tile feature of mplayer
> before. Didn't think of that.
>
> So it appears that:
> mplayer dvd:// -vf tfields=1,tile=1:2:2:0:0,framestep=2
>
> Works. tfields=1 (or yadif=1 i'm assuming) split fields into frames,
> interpolating doubling the output framerate. I then tile 1 horizontal,
> 2 vertical, and one would think for every 1 frame, render a new one,
> but then I get top tile with image and bottom tile black, so I use
> render every 2 frame. Finally, I get extreme flicker, apparently 1
> frame with the proper tiles, 1 frame black. So I framestep=2 and it
> works. Plus it goes back to proper frame rate. It seems tfields
> doesn't seem to work like I tought it would?
>
> But, anyway, at least I can finish my install and I'll be testing this soon.
>
> So to recap at a minimum:
>
> field sequential to over/under:
> mplayer dvd:// -vf tfields=1,tile=1:2:2:0:0,framestep=2
>
> and field sequential to left/right:
> mplayer dvd:// -vf tfields=1,tile=2:1:2:0:0,framestep=2
>
> Anaglyphs and half color anaglyphs:
> no idea. Probably requires a filter to be written.
>
> Simple enough, but like I said, it can be improved. That black frame
> issue would need to be addressed. Probably my misunderstanding of how
> tfields works.

I just had a tought... I added -vo x11 and then there is no need to
framestep at all, it works like it should. Apparently the nvidia
driver (this is under Solaris x86) is trying to deinterlace on it's
own, and there is an incompatibility with yadif, tfields etc... FYI.

Francois