On Thu, Dec 06, 2007 at 04:21:56AM -0800, Ralph Shumaker wrote:
I tried playing with that just now, and cannot figure out a way to dump
each frame to a jpg file. It has a few video out formats. And no matter
what I did, I couldn't get the program to work anyway. It hung at the same
point every time.
If you want jpgs of each frame, I'm guessing that mplayer is what you are
going to want. It sounds like there are two problems with the results.
- The image is squashed. This is expected, since this is how they are
stored on the DVD. This can be fixed after you get the images you
want.
- The images are corrupted. This sounds like your version of mplayer
might not be configured to use libdvdcss (it is an option), in which
case it won't be able to decrypt the video, and you'll get corrupt
frames. What distribution are you using?
You might have an additional problem once you do get uncorrupted images:
- The frames might be interlaced, meaning that the even and odd lines of
the image are from different points in time, giving moving objects a
kind of Venetian Blind look. This is a bit harder to solve, although
mplayer has a fairly decent de-interlacer in it. Actually, it has a
good software scaler as well, but I don't know if either can be invoked
before dumping frames out.
What do you intend to do with the frames? Do you just want to use a few,
or do you want to reassemble them in some other manner? The expanded
frames will be significantly larger than the data on the DVD.
Dave
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