[mythtv-users] Why I have to resolve recording conflicts?

[Per Åge Sørvik]

Joe Votour wrote:


> Acording to the MythTV documentation (and my own
> experience), if you're using software cards (i.e.
> bttv-based), it takes 1GHz to record, and about 500MHz
> to play back the recorded stream.  Thus, on my machine
> which has two bttv cards, I can't record one show and
> watch another simultaneously (frame drops), but I can
> record two shows at once.  If I swapped out one of my
> bttv cards for a PVR-250, then I could record two
> shows and watch something pre-recorded all at once (I
> have an Athlon XP 2400).
> 

I only wan't to point out that this is heavily dependent on your system 
configuration (hardware) & choise of mpeg4/rtjpeg/mjpeg/mpeg2. My 
experience is that decoding mpeg4 puts almost no load at all on the 
system. On my current system this is 1-2%. The video card seems to be 
the important here, going from built in vga to a G550 (with Matrox 
drivers) on my old system reduced the load of decoding from 30% to 3-4%.

--

peraage