[mythtv-users] Bobdeint is only for playback?

[William]

AFAIF deinterlacing is only done to the screen. The file is not altered so
your file is stored interlaced.

> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org 
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Henk Poley
> Sent: Saturday, January 22, 2005 5:28 AM
> To: mythtv-users at mythtv.org
> Subject: [mythtv-users] Bobdeint is only for playback?
> 
> 
> I've been using kerneldeint as a preprocessing filter since 
> MythTV 0.14. So 
> all video stored on disk is deinterlaced, but only at 25fps 
> (PAL). This is 
> needed for the S-Video output of the Asus Pundit.
> 
> Now using MythTV 0.16 I'd like to switch to bobdeint to up 
> new recording to 
> 50fps for smoother video. But when I simply replace the 
> recording filter 
> chain for a channel by "bobdeint" it will show the first 
> frame on top and the 
> second one at the bottom.
> 
> Doug Larrick in the first mail about bobdeint says: "Finally, 
> deinterlacing 
> will not be called on program material that is detected to be 
> progressive-scan." I tried that by enabling the playback 
> deinterlace and .. 
> it doesn't work as expected. Old already-deinterlaced recordings are 
> "deinterlaced" again and bobdeinterlaced still display with 
> the first frame 
> on top and the second on the bottom (and is bobbing up and down).
> 
> The code that does this detection is 
> NuppelVideoPlayer::detectInterlace which 
> has a note that "The scanning mode should be decoded from the 
> stream, but if 
> it isn't, we have to guess."
> 
> Is it possible to edit my existing nuv files so Myth knows 
> it's deinterlaced 
> already (aka. no guesses)? Which would make it possible to switch to 
> interlaced recordings without breaking playback of older ones.
> 
>  Henk Poley <><
>