Matt wrote:
I've used myth for about 2 years now. I've always known that it
stores .nuv files,
True, but only when your realize that ".nuv files" simply means files
whose filenames end with ".nuv"
but for the first time in a long time I looked in
my saved recordings directory and saw many more .mpg files than nuv
files.
What I'm used to seeing is: 1070_20050407005900_20050407013100.nuv
and what I see now for recent recordings is: 1065_20051105020000.mpg
Why is that? Is something being transcoded? Does it now just default
to save to .mpg?
Previous versions of Myth always used the ".nuv" extension regardless of
the file type. Current SVN will put a ".mpg" extension on any file
that's actually an MPEG-2 System file. Therefore, users with DVB (which
is broadcast in MPEG-2 TS) or ivtv cards (which output MPEG-2), now get
".mpg" extensions. Because the original is an MPEG-2 System file,
there's no transcoding going on--just file naming to make people who
think the file extension actually means something (i.e Windows
users/people who have used MS operating systems long enough to buy into
Bill G's "you can tell what kind of file it is by the extension" dogma)
happy.
If you have a frame grabber, Myth actually encodes the video as either
RTJPEG or MPEG-4 inside a NuppelVideo container. Therefore, for these
types of cards, you will get files that end with the ".nuv" extension.
There's no reason to worry about the filenames, so you don't have to
change your ".nuv" files to ".mpg" files (although you can with
mythrename.mpl--but be careful with it--see
http://www.gossamer-threads.com/lists/mythtv/users/162886#162886).
Mike
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