[mythtv-users] Frontend hardware confusion.

[Kenni Lund]

2011/3/23 Terjesen Jens Peder <Jens.Peder.Terjesen at devoteam.com>:
> If the results from the qvdpautest reported in this thread on the Nvidia Linux forum are correct it looks like it is only a slight difference between ION and ION2.
> http://www.nvnews.net/vbulletin/showpost.php?p=2392864&postcount=364
> http://www.nvnews.net/vbulletin/showpost.php?p=2352362&postcount=327
>
> If I understand this correctly it looks like the ION2 should be able to do Advanced 1X on HD, both 50 and 60 Hz, whereas the ION can not.

My Zotac Zbox HD-ID41 performs the same in qvdpautest as the AT5IONT-I
above. I'm not sure how this should be interpreted, AFAIK "MIXER
TEMPORAL_SPATIAL" is the result to look at when talking about the
advanced deinterlacer in MythTV. But do you compare the result with
the refresh rate (eg. 50Hz for PAL) or the frame rate of the video
source (eg. 25 frames/sec)? And is it even correct to compare one of
these results with the fields/sec from qvdpautest? The help text for
the setting in MythTV points towards the frame rate, while the above
comment seems to point towards the refresh rate.

...or am I just talking complete nonsense? :)

----------------------------
qvdpautest 0.5.1
Intel(R) Atom(TM) CPU D525   @ 1.80GHz
NVIDIA GPU ION (GT218) at PCI:3:0:0 (GPU-0)

VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library  270.30  Fri
Feb 25 14:54:19 PST 2011

SURFACE GET BITS: 189.163 M/s
SURFACE PUT BITS: 161.899 M/s

MPEG DECODING (1920x1080): 68 frames/s
MPEG DECODING (1280x720): 161 frames/s
H264 DECODING (1920x1080): 62 frames/s
H264 DECODING (1280x720): 137 frames/s
VC1 DECODING (1440x1080): 79 frames/s
MPEG4 DECODING (1920x1080): 72 frames/s

MIXER WEAVE (1920x1080): 483 frames/s
MIXER BOB (1920x1080): 675 fields/s
MIXER TEMPORAL (1920x1080): 190 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 121 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 254 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 65 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 53 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 72 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 230 fields/s
MIXER TEMPORAL_SPATIAL + HQSCALING (720x576 video to 1920x1080
display): 121 fields/s

MULTITHREADED MPEG DECODING (1920x1080): 70 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 163 fields/s
----------------------------

Best regards
Kenni