On Fri, 7 Apr 2006, Jonathan Woithe wrote:
...
> The datastream sent keeps the field order of the original footage. When
> constructing the yuv4pmeg2 stream, cinelerra by default appears to assume
> top-field-first which, while perhaps being appropriate for NTSC-land (which
The capture hardware I use has bottom field first for everything not
just the "DV" family of codecs.
So the problem could be that the tag is just getting (arbitrarily)
set wrong in Cinelerra.
> I have no direct experience with) is not right for those of us using PAL
> (which is always bottom-first). Thus if one is using bottom-field-first
Are you 100% certain of this? DV is always bottom field first - that
is true for 625line (PAL)) or 525line NTSC. I have a MJPEG sample
sent to me from a fellow in Austria and that file is top field first
(came from either a DC10 or DC30 - I forget which).
(technically PAL and NTSC are color modulation schemes but are
overloaded to mean 625 line and 525 line video systems - it is possible
to, like in Brazil, have a 525 line system with PAL color - it's
PAL/M as I recall)
But as far as I know "PAL" can have either field order - the choice
is made at acquisition time by the hardware being used.
> Having said all that, this may not be your particular problem. :)
No, it probably isn't but it was an interesting thread of discussion.
> I think we're talking about two different things. Cinelerra *itself* is
> developed by a single person as Steven said; the developer's website is at
>
> http://heroinewarrior.com/index.php3
> There is no mailing list and it one generally has to wait for the changelog
Yes, that's the one I was thinking of.
> In an attempt to make development a little more fluid, a group of people
> set up
>
> http://cvs.cinelerra.org/.
And that would be the one I did not know about ;)
Thank you for the information and the clarification. I was wondering
if the "heroinewarrior" had suddenly become reachable ;)
Cheers,
Steven Schultz
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