Hi,
> It _should_ insert the appropriate aspect ratio header in
the rendered output file (if the format supports it) but from what I've
heard
from other users that may not be the case.
can confirm that. Quicktime has the "pasp" atom for that purpose, but cinelerra
doesn't write it, even if the source has it set.
IMO, it would be more clean to set only the pixel aspect ratio (and not the
display aspect ratio like 4:3 or 16:9).
The reason is, that all codecs and fileformats, which support nonsquare pixels,
store the PAR. The PAR is standardized for many formats (see e.g.
http://www.mir.com/DMG/aspect.html), but the resulting DAR is not always
exactly 4:3 or 16:9.
Cinelerra is oblivious about pixel aspect ratios, so if you mix in
different videos or still images you have to squeeze them to match the pixel aspect
ratio of the 16:9 DV content.
Even if you mix 4:3 DV content (PAR = 59:54 for PAL) with JPEG images (PAR =
1:1),
you have to squeeze the JPEGs (otherwise people on the JPEGs look too fat). And
yes,
that's annoying.
Automatically scaling all sources such that the PAR matches the project settings
would be a simple and correct solution.
Burkhard
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