[mythtvnz] freeview HD on an AMD X2 6000+

Sun Oct 19 06:54:25 BST 2008

Ah hadn't really thought of that, pretty sure I have only played with SD 
upscaled stuff so far. However Bones is on tonight so will try with that.

My setup is an ASUS M2N-MX SE motherboard with 6100 graphics. CPU is 50+ 
plus while playing TV3, so very much bleeding edge.

Steven Ellis wrote:
>
> On 19/10/2008, at 11:50 AM, Andrew Richards wrote:
>
>> I am now running this same set-up on my 5200X2, haven't done a through
>> test but in simple terms I can play TV3.
>>
>> Well, at least I can while nothing else is happening. Unfortunately
>> playback and commskip cannot co-exists without stuttering.  What I am
>> trying to figure out is:
>>
>> - How to select audio streams? I want to use AAC on TV3 all the time,
>> yet cannot see where to change this
>> - How to turn off Loopfilter. In Playback Profiles I leave it on CPU+
>> and edit the second entry (if rez <=1280 720 & > 720 576 ->XvMC) to use
>> 2 CPU's and uncheck the Loopfilter box. I also changed the Primary
>> Deinterlacer to One Feild. I assumed all this would lower CPU usage but
>> it doesn't.
>>
>> Also I am confused about the Loopfilter box, my reading of the
>> instruction is that with it checked, Loopfilter is enabled. This is the
>> default setting, yet by default my machine can play 1080i video which I
>> wouldn't expect without skiploopfilter. So it seems to be this setting
>> isn't being properly respected. Any thoughts?
>
> The bitrate and CPU load required for TV3 appears to vary quite a bit 
> depending on the content. For testing the best bet is to record a show 
> that is marked as broadcast in HD so you have a reliable reproducible 
> environment.
>
> Based on the CPU loading i'm seeing on a 6000+ and similar data for a 
> 5600+ I'm surprised you get the playback you are seeing. What MB and 
> GPU do you have?
>
>>
>>
>> Steven Ellis wrote:
>>>
>>> On 14/10/2008, at 10:35 AM, Steven Ellis wrote:
>>>
>>>>
>>>> My X2 6000+ was delivered just an hour or so ago and now have working
>>>> TV3 - subject to a couple of minor niggles below.
>>>>
>>>> I'm running Ubuntu 8.04 with Paul's most recent patched MythTV
>>>> release and loopfilter disabled in my playback profile. The
>>>> motherboard is an M2NPV-VM with 2G Ram and a Hauppauge HVR-900 USB 
>>>> tuner.
>>>>
>>>> Previously I had an X2 3600+ in my test rig which really didn't cut it.
>>>>
>>>> X2 3600+
>>>> cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
>>>> 2000000 1800000 1000000
>>>>
>>>> X2 6000+
>>>> cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
>>>> 3100000 3000000 2800000 2600000 2400000 2200000 2000000 1800000 
>>>> 1000000
>>>>
>>>> Ok so a lot more speeds to play with but for the purposes of testing
>>>> I changed the governor to performance which locks the CPU at its
>>>> fastest speed.
>>>>
>>>> echo "performance" >
>>>> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>>>>
>>>> So First a bunch of pre-recorded content
>>>>
>>>> Channel CPU CPU with Bob
>>>> TV3 83% 100+
>>>> TV2 50% 50%
>>>> TV One 50% 50%
>>>>
>>>> Live content
>>>>
>>>> Channel CPU CPU with Bob
>>>> TV3 83% 100+
>>>> TV One 59% 59%
>>>> CTV8 21% 25%
>>>> TVNZ 6 21% 24%
>>>>
>>>> So it appears that the Bob de-interlacer adds quite a bit of
>>>> additional load, but thankfully most of that appears to be on the
>>>> second core. For TV3 above I get 88% on one core and 29% on the
>>>> second core with Bob. Without a de-interlacer almost all the load is
>>>> on one cpu.
>>>>
>>>> There doesn't appear to be much of a performance difference between
>>>> playing AC3 or AAC on TV 3 which is good news.
>>>>
>>>> So the niggles
>>>> 1. The X2 6000+ is a 89W CPU part so the core is hotter and the fan
>>>> faster than I'd prefer. There are rumours of some lower power parts,
>>>> but they might only work in AM2+ compatible boards.
>>>>
>>>> 2. Occasionally I get a picture in picture effect when I switch
>>>> between 720p and 1080i channels which I have two copies of the same
>>>> video feed on screen, one of which is in a small box in the top left
>>>> hand of the screen.
>>>>
>>>> 3. The AAC audio doesn't always lock on a channel change
>>>>
>>>> So I have something that works, but I wouldn't consider it customer
>>>> ready.
>>>>
>>>> I think I need to consider an Intel compatible alternative, but can't
>>>> find a board with integrated Composite/Component/SVideo as well as
>>>> DVI/HDMI in the Intel space.
>>>>
>>>
>>> Turned CPU scaling back on which is rather interesting
>>>
>>> For 720p channels it is happy to peg the cpu at 1.8 GHz, for  1080i it
>>> goes all the way upto 3.1 GHz.. The SD channels go all the way down to
>>> 1GHz which is the lowest speed setting.
>>>
>>> Going to leave the box playing TV3 for a couple of hours and see how
>>> it copes with the load.
>>>
>>> Steve
>>>
>>>
>>> Steven Ellis - Technical Director
>>> OpenMedia Limited
>>> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
>>> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>>>
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>>
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>
> Steven Ellis - Technical Director
> OpenMedia Limited
> email   - steven at openmedia.co.nz <mailto:steven at openmedia.co.nz>
> website - http://www.openmedia.co.nz <http://www.openmedia.co.nz/>
>
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