Re: [V4L] Ancilliary issues to "Tivo" alike

[Jim Buzbee]

Alan Cox wrote:
> 
> > [EMAIL PROTECTED] wrote:
> > > - Put bluntly: ext2 is not good for video capture
> >
> > Mount the partition with the synchronous option.
> 
> uggh. For 2.2 use O_SYNC so you just slow down the video writer thread and
> stream the I/O, for 2.4 make use of O_DIRECT to raw device if possible for
> even better behaviour
> 

What about the option of mmap'ing windows into the output file?  Would
the setup overhead be worth it?  The hope would be that data could go
from the video input driver to the output file system while minimizing
the number of copies.

Jim Buzbee



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