On Mon, 22 Sep 2003, Maarten de Boer wrote:

> >     Hmmm, I thought that dvgrab created files with either 4:1:1
> >     (NTSC) or 4:2:0 (PAL).    PAL DV is 422?   I didn't know that
> 
> Well, at least that what it said on the page I mentioned - that libdv
> exports both NTSC and PAL as 422. But I did not check that or anything.
> I am a real novice to digital video, and all the packing it still a bit
> of hocus pocus to me.

        I just checked Sony's "DVCAM Format Overview" document and
        PAL DV is indeed 4:2:0

> I watch the DV files correctly with mplayer. The (strange) yuv output from
> lav2yuv, I simply piped it into yuvplay

        Ah, ok.   That is helpful info in tracking down where the
        problem is.

> >     Did you remember to configure mjpegtools with:
> > 
> >             ./configure --with-dv-yv12
> 
> I think I only did that for libdv.. I did not realize mjpegtools also
> had this configure option.


        I think that simply taking the defaults (no --yv12 options) for
        libdv, smilutils, and mjpegtools should, as Charlie mentioned,
        do the right thing. 

> >     One thing that might be useful is to use "--format raw" instead
> 
> Yes, that seems to be a very good idea.

        I have found the raw format to be very useful.  Earlier versions 
        of the AVI format had a 2GB limit but 'raw' does not (if the
        underlying filesystem supports large files).   I've found 
        single large files easier to use than multiple 1 or 2GB files.

        Let us know when everything is working for you ;)

        Steven Schultz



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