On Thu, 28 Oct 2004, Roman Shaposhnick wrote:
> On Thu, Oct 28, 2004 at 09:28:28AM -0700, Steven M. Schultz wrote:
> > Or rather, as I should have added: if you do take the two fields
> > from the same point in time then the encoder should set the flags
> > in the MPEG output stream saying that the two fields are temporally
> > coincident.
>
> Which flag are you thinking of ?
The one that causes dvdview to print "frame picture" or similar
info ;)
If you trace thru the handling of "-I" in mpeg2enc there's mention
of "fieldpic" and similar flags. These result, I believe, in the
encoder setting the "Progressive_frame" bit - that is in the MPEG-2
Picture Coding Extension structure (same structure that the
repeat first field flag is in) according to
Video Demystified 4th Edition ISBN 0-7506-7822-4
Cheers,
Steven Schultz
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