Re: [dvd::rip] Re: Deinterlacing

["Brian J. Murrell" <brian@xxxxxxxxxxxxxxx>]

On Mon, 2005-07-25 at 23:05 +0200, Sylvain wrote:
> I can hardly imagine the transcode team doing such a thing...

Indeed.

> nope, not even in verbose mode.

Hrm.  Interesting.  Strnage.

> maybe there be something wrong with my mplayer ?

Does that string even exist in your binary?

$ strings $(which mplayer) | grep "progressive NTSC content detected, switching 
framerate"
demux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.

Oh, but wait.  You are in .fr.  I'm not sure what happens there with
interlacing, PAL, mpeg2, and all that.  My comments are strictly for
north america and NTSC.

What does mplayer say in the header about the video played from a VOB?
Mine says:

Playing /video/HideandSeek/vob/004/HideandSeek-003.vob.
Cache fill: 18.36% (1540096 bytes)    MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 3)  29.970 fps  9800.0 kbps (1225.0 kbyte/s)
==========================================================================

The 29.970 is what the mpeg stream is telling mplayer it should play at,
and if mplayer's mpeg library:

Opening video decoder: [libmpeg2] MPEG 1/2 Video decoderlibmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG-1 or 2 (libmpeg2))

was doing what a DVD player would in NTSC land, it would display 29.970
frames/s by applying the 3:2 pulldown to the 24fps content that is
actually on the DVD producing interlaced output.  mplayer is smarter
than that though and plays the PS content as it should be played on a
non-interlaced display.

I'm not sure what happens in PAL land though.  Maybe your mplayer header
could be of some explanation.

b.

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