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On Dec 8, 2005, at 11.32, MythTV wrote:
As mentioned it is normal. You can adjust the data rate in the
recording profiles. If you are recording analog from the air,
then you
might reduce the horizontal resolution from 720 pixels to 400 and
reduce the datarate accordingly.
And you can transcode to MPEG4 to reduce the data rate even further.
But in that case you should better have a high rate in the
MPEG2 to achieve a better MPEG4 result.
Yeah, but I'm pretty sure the PVR-500 outputs MPEG-2, not MPEG-4,
so this
kind of defeats the purpose of owning the PVR-500 (assuming
he purchased it with the MPEG-2 output in mind). Wouldn't it
actually put
*more* stress on the system to transcode the output from a
PVR-500 card to MPEG-4 since the system has to decode the MPEG-2
stream in
addition to encoding the MPEG-4 stream?
The encode to MPEG-2 happens on the card in real-time with no CPU
impact.
The encoding from MPEG-2 to MPEG-4 happens non-real-time (like
commercial
flagging) after the recording so it is CPU intensive, but can be
run "nice"
so it doesn't impact other processes.
Well, I was thinking that they meant instead of capturing MPEG-2, we
capture MPEG-4 instead, not capturing in MPEG-2, then converting to
MPEG-4 later.
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