On Fri, 11 Jan 2008 00:41:17 +0100, Terje J. Hanssen <[EMAIL PROTECTED]>
wrote:
After capturing raw DV (.dv) or HDV (.m2t) video files from camcorder to
harddisk I wonder:
1. Are there "native" playback support for these video files on Linux,
on Windows and Mac?
I will not speculate about Mac and Windows, but for Linux I believe
DV playback is likely to work with any "default" media player installed
on a "desktop" distro. (servers may not have media players at all)
Since HDV is MPEG2, which is patent encumbered, some distros may have
crippled the players to not support it. Those users who are interested
in viewing videos will likely have jumped through some extra hoops to
enable the format support originally offered by the same players.
2. Are especial video players required, does the video scale to the PC
monitor resolution and size, or are poweful graphical cards required?
Not powerful by today's standard. Hardware accelerated scaling to full
screen is very old news. All the common players support it, and graphics
cards with half-decent X11 driver support provide it.
HDV playback will require a reasonably modern machine, though. A new
mid-level machine, or a powerful machine that is less than 3 years old.
Unless you have a huge screen the image will be scaled down.
3. Burning the same raw DV or HDV files to DVD disks (that is not a
mpeg-2 DVD), do standard, standalone DVD players have playback support
for these video files?
No.
4. And lastly, the same questions for the especial "Wide 16:9 anamorphic
DV" format, which can be recorded directly on a HDV camcorder or by
i.LINK downconvert at playback HDV tapes.
Is this format also supported in Cinelerra editing?
Cinelerra has an "aspect ratio" setting in the Format dialog. So
Cinelerra
will display the 720x576 pixels as an 16:9 image if you tell it to. But
that
is all it does. 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.
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. Mind you, this limitation is not unique to
Cinelerra.
--
Herman Robak
_______________________________________________
Cinelerra mailing list
[email protected]
https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
