[mythtv-users] Zotac IONITX Performance

Nick Rout nick.rout at gmail.com
Tue Sep 22 21:09:54 UTC 2009


On Wed, Sep 23, 2009 at 7:05 AM, Brian Wood <beww at beww.org> wrote:
> On Tuesday 22 September 2009 12:50:00 David Asher wrote:
>> On Sep 22, 2009, at 2:37 PM, Brian Wood wrote:
>> > I think the real test is high bitrate h264, as from an HD-PVR. With
>> > the
>> > upcoming release of 0.22, many more folks may be using the HD-PVRs.
>> >
>> > ATSC is MPEG2, relatively easy to decode, at least compared to h264.
>> >
>> > Any solution that can't cope with h264 is off the table as far as I'm
>> > concerned.
>>
>> Good point.  I've definitely used it many times with 720p H.264, but I
>> don't know the bitrate.  And 1080p H.264 once (the Indiana Jones Movie
>> trailer).  All without noticeable playback issues.
>
> That's what I wanted to hear, thanks.
>
> Perhaps we should get a standard test file recorded with an HD-PVR at maximum
> bitrate for folks to test playback setups.

Another good test would be 1080i h264 broadcasts with paff interlacing
and he-aac sound as broadcast in NZ, and some places in Scandanavia I
believe. Not because the bitrates are higher than bluray/hd-pvr (cos
they aren't) but because the advanced features of the codecs used make
decoding particularly difficult, especially if there are errors in the
bistream (as thereoften is in a terrestrial broadcast scenario).


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