Re: MPEG-2 Capture?

[Aleksandr M. <n6...@mi...>]

At 1:03 AM -0500 on 2/6/01, Dan Dennedy commanded the electrons to 
create a missive titled "Re: MPEG-2 Capture?":
|Aleksandr Milewski wrote:
|>
|> Has anyone done any work on MPEG-2 capture from 1394?
|
|Not that we are aware of. Most us are capturing DV and uncompressed
|video.

Uncompressed? From what source?


|> I admit that I haven't built linux1394 yet, so if this is as simple as
|>
|> cat /dev/video1394 >> file.mpeg
|
|Not that simple until someone brings video1394 up to video4linux
|compliancy. However, you can certainly call a few ioctls and dump the
|iso packets to disk. If it is that braindead, then maybe it will be as
|simple as that, but I would not be so optimistic.

I'm reasonably sure it is that braindead. According to one source, 
each iso packet contains either one or two 188-byte Mpeg2 TS packets, 
"with header and timestamp." Sounds braindead to me.

In any case...

At 1:18 AM -0500 2/6/01, Dan Dennedy wrote:
|Also, you could just use libraw's iso read functions. It is more
|universal, popular and simple. You can view the source of dvgrab to see
|how to use it. Access dvgrab at http://www.schirmacher.de/arne/dvgrab/.

This is the right thing to do. I'll look at the source, but I have a 
suspicion that commenting out large pieces of dvgrap might be the way 
to go.

Of course, the reason I asked this on the user list is that I'm far 
more user than developer, so if someone would like to lead the way...

-Zandr
-- 
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Aleksandr Milewski                                              N6MOD
n6...@mi...                           http://www.milewski.org/