[libdv-dev] Re: [Kino-dev] DV output - data points

[Dan D. <dde...@co...>]

Thanks for the feedback. I am commiting to CVS a new version of Kino
tomorrow night that will expose the various timing constants for DV export
in the Preferences dialog (the preferences will also save between sessions).
This will let you experiment to get a good output. Also, I have noticed on
my AMD 333 development machine, that the updating of the progress bar
interferes with export, so I will either provide a toggle in preferences or
see if a simple textual "current frame #/total frames" feedback is less
intrusive.

Alastair, it is normal for your device to take a few seconds to "synch" up
before displaying the video. Therefore, I have on the Kino task list to
revise DV export to display the first frame for a few seconds before
continuing.

Kirk, in regards to your last email, the new Kino will also include a new
video1394.c that lets me expose the SYT offset in the driver through
preferences, and that is another thing you need to experiment with now that
you are close.



From: "Alastair Mayer"


> I've been experimenting with exporting DV over the past couple of days,
> and have a couple of data points for anyone struggling with this.
>
> The short form:  works with Dazzle DV-Bridge, not with Sony TRV-103.
>
> The longer form: my software setup:  Mandrake 8.0, 2.4.3 kernel with
> Mandrake-included ieee1394 modules, and libdv, libraw, dvgrab, and
> kino built from the latest downloadable tgz/rpm files (not CVS).
> (dvgrab-0.99, kino-0.4b, libdv-0.8, libraw1394-0.8.2, although come
> to think of it, the raw1394 module came with Mandrake, so I'm using
> whatever version that is, just using the 0.8.2 header files for
> building the other stuff)
>
> It appears to work OK using a Dazzle Hollywood DV-Bridge (hardware
> DV-to-analog), it appears to NOT work properly to my Sony TRV103
> camcorder.  NTSC in both cases.   Using Kino to export the movie.
>
> So far I've only tested short clips.  Watching the Hollywood output
> on a TV monitor it remains dark for a few seconds then the video
> comes on, I don't know if that's buffering, or sync'ing, or both.
> Watching my camcorder, the viewer flickers indicating that something
> is happening, and reviewing the tape shows mostly blue screen with
> the occasional video frame or two (sometimes garbled).
>
> I suspect the camcorder is more sensitive to timing and possibly
> to various flags being set properly in the DV stream.  I know the
> camcorder *can* record DV input because I've tested it with output
> from a (Windows) setup using the Matrox RT-2000 and Adobe Premiere.
>
> A couple of additional notes on hardware:  I tested the camcorder
> and Hollywood box on different systems: the camcorder on my home
> system with a D-Link 1394 card, the Hollywood box at work with an
> Adaptec card.  (AMD K6-233 at home, Pentium-166MMX at work, both
> with 64MB, both with fresh Mandrake installs plus the 1394/DV software).
> At some point I'll either take the Hollywood box home or bring my
> camera in to work and retest, so that those will be the only variables.
>
> Right now my priority is being able to export DV via the Hollywood
> box (or similar) for recording on VHS.  (Via a playlist, no GUI).
> I'll be testing with PAL (the DV-Bridge supports both) in a few days
> when our PAL gear arrives.
>
>  -- Alastair
>
> (OBTW - building Kino requires libdb1.a which doesn't appear to be part
> of a Mandrake install (at least not as I installed it).  I just
> copied the lib from a SuSE install on another machine here.)
>
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