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Christopher Meredith wrote:
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cite="mid:4d73dc1a0911160558t6079fa0fid09db09c7972ce1d@mail.gmail.com"
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<pre wrap="">On Mon, Nov 16, 2009 at 7:30 AM, Richard Woelk <a class="moz-txt-link-rfc2396E" href="mailto:richardwoelk@yahoo.ca"><richardwoelk@yahoo.ca></a> wrote:
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<pre wrap="">
Marius Schrecker wrote:
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<pre wrap=""> Hi,
The last quality issues with TV recordings from my hdpvr are solved after
I turned the bitrate settings up to max 13500 - 22000 for all resolutions.
Output quality looks subjectively AT LEAST as good as direct output from
stb to TV :-), using 720p over component, and s/pdif -> ac3. Any trace of
jerkyness/jitter/frame corruption is gone.
Obviously, the max setting is overkill, eating disk space, and stressing
the bus unneccessarily (Even using VDPAU the cpu and fans are obviously
woring harder than with the default settings, which I can't remember
offhand).
STB is spitting out 720p, although most content is SD/PAL.
What recording profiles are others using?
Cheers!
Marius
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<pre wrap="">Marius
I just checked my recording profile. I use the max 13500 - 20200 for both
720p and 1080i. I use 4500-7000 for SD
I have two HD-PVR1212s. #1 is hooked to a STB forced to 720p, and #2 is
forced to 1080i. This way I can choose the quality by schedule
My tv shows take up about 2.6GB / hr for 720p, and 4.5GB/hr for 1080i.
My satellite receivers have a setting for 4x3 override for SD channels. I
set that to 480i (480p looks worse) and those recordings are about 700MB/hr
My frontend has a Geforce 9500GT in it, so I use VDPAU most of the time. I
did try some trunk packages once and didn't notice VDPAU wasn't working. my
3.16Ghz core2duo was doing 1080i playback with 70% of one core.
When I was first testing, I had a Athlon 64 X2 as my frontend, I had to turn
the 720p bitrate down to half to get that to play smoothly. The quality
wasn't bad, but I upgraded pretty quick.
If there is anything you want me to try, I could make some test recordings.
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<pre wrap=""><!---->
I'm using the default profile for my HD-PVR and my STB is forcing
720p. One thing I want to confirm here is that I've been assuming that
if I have a 720p display (1360x768) there's nothing to be gained from
watching 1080 content, since it will essentially be scaled down to 720
anyway. Is this correct?</pre>
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That would be the case if you are getting a true 720p from your STB. <br>
I know my satellite provider sends everything as 1080i, so having the
STB downconvert to 720p is worse quality than having the TV or
videocard do it<br>
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- Richard<br>
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