Capture Card Resolution -- was: Re: [mythtv-users] 2 Capture card questions
ken at bizrace.com
Sat Mar 22 23:32:33 UTC 2003
Well, I have some interesting (yet frustrating) results. It seems the problem
for me is the height. I can record at 720x240 using mpeg4 at only like 33% cpu,
rtjpeg works great too. However, if I select 480 for the height, the quality is
terrible no matter what the width is and the cpu usuage is very high. I have a
P4 1.5Ghz using a WinTV Go for capture and NVidia 440MX for TV out (3123 drivers).
Anyone have any ideas?
Quoting Unit3 <unit3 at demoni.ca>:
> Ken VanDine wrote:
> >Thanks, what do you mean by changing the compression? Do you mean the
> > I have tried it as low as 2200 with no real improvement. It actually
> >pretty good at 320x240, but goes down quickly as I increase it. It is a
> bt8x8 card.
> Hmmm... bitrate is a function of the MPEG4 codec. Try the RTJpeg at
> about 180-190, and see what it looks like. My system produces much worse
> video using MPEG4 than RTJPEG, I think it's because it can't keep up
> with the encoding.
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