On Mon, 10 Apr 2006, Jonathan Woithe wrote:
> > > not right for those of us using PAL (which is always bottom-first)...
> >
> > Are you 100% certain of this? DV is always bottom field first - that
> > is true ...
>
> No, I'm not certain - I just seem to recall reading somewhere that NTSC-DV
> did things differently sometimes. It was a while ago though so I might be
DV is always bottom field first. That is not dependent on the video
system being used. It was the generalization beyond DV that caught
my attention. Other formats, such as MJPEG, can be either field order.
> It is odd that cinelerra's default settings export YUV4MPEG2 with the "top
> field first" flag set without any reference to the source material though.
Basically ignoring the field order on input.
> perhaps it's an effect from earlier development where the input streams *were*
> top-field first.
Exactly what I was thinking - the field order was hardcoded into the
program based on the capture card the developer had at the time.
> standard; a standards-compliant PAL DVD can consist of a single MP2-encoded
> soundtrack, but if it's an NTSC DVD having a single MP2 audio track is *not*
> standards compliant. For an NTSC disc you must have either a PCM or AC3...
Thankfully the makers of the DVD players ignored that part of the
standard :)
I've never had any problems at all with MP2 audio with 'region 1'
(US) DVD players.
Cheers,
Steven Schultz
-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
Mjpeg-users mailing list
Mjpeg-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mjpeg-users
