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Melt your computer with killa.sampla

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ylee at pobox

Jun 22, 2009, 3:33 PM

Post #1 of 4 (4488 views)
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Melt your computer with killa.sampla

Got a shiny new Core 2 Duo supercomputer for MythTV? VDPAU not letting
it get any real exercise? Try

http://tinyurl.com/KillaSampla

or

http://rapidshare.com/files/82525583/killa.sampla.x264.mkv.html

It's a 100MB clip from one of the episodes of _Planet Earth_ (on
Blu-ray, I think). The clip severely stresses video decoders because
it's a) very-unoptimally encoded as
<URL:http://xbmc.org/forum/showthread.php?t=36803> discusses, and b)
what appears in the video.

mythfrontend 0.21-fixes+VDPAU on my frontend more or less seizes up
immediately, with the screen filled with green and purple macroblocks
and an endless stream of

2009-06-22 15:18:53.466 NVP: Waiting for prebuffer.. 2449
LLLLLLLLLLLLLdLLL
2009-06-22 15:18:53.480 NVP: Timed out waiting for free video buffers.
2009-06-22 15:18:53.482 NVP: prebuffering pause
2009-06-22 15:18:53.482 NVP: Waiting for prebuffer.. 2450
LLLLLLLLLLLLLdLLL
2009-06-22 15:18:53.499 NVP: prebuffering pause

messages in mythfrontend.log. mplayer (also VDPAU-enabled, from
ATrpms) plays but only with considerable stuttering.

On my 2.4GHz Core 2 Duo MacBook Pro running OS X, mplayer (from
MacPorts) plays the clip about as well as it does on the Pentium 4
frontend, with lots of complaints of

Too many video packets in the buffer: (40 in 8765321 bytes).
Maybe you are playing a non-interleaved stream/file or the codec
failed?
For AVI files, try to force non-interleaved mode with the -ni option.

VLC 0.9.9a also sort of plays it, but with visible macroblocks
everywhere.

--
Frontend/backend: P4 3.0GHz, 1.5TB software RAID 5 array
Backend: Quad-core Xeon 1.6GHz, 6.6TB sw RAID 6
Video inputs: Four high-definition over FireWire/OTA
Accessories: 47" 1080p LCD, 5.1 digital, and MX-600
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steve at heistand

Jun 22, 2009, 4:19 PM

Post #2 of 4 (4383 views)
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Re: Melt your computer with killa.sampla [In reply to]

Yeechang Lee <ylee [at] pobox>, said on Mon Jun 22, 2009 [03:33:32 PM]:
} Got a shiny new Core 2 Duo supercomputer for MythTV? VDPAU not letting
} it get any real exercise? Try
}
} http://tinyurl.com/KillaSampla
}
} or
}
} http://rapidshare.com/files/82525583/killa.sampla.x264.mkv.html
}
} It's a 100MB clip from one of the episodes of _Planet Earth_ (on
} Blu-ray, I think). The clip severely stresses video decoders because
} it's a) very-unoptimally encoded as
} <URL:http://xbmc.org/forum/showthread.php?t=36803> discusses, and b)
} what appears in the video.
}
} mythfrontend 0.21-fixes+VDPAU on my frontend more or less seizes up
} immediately, with the screen filled with green and purple macroblocks
} and an endless stream of
}
} 2009-06-22 15:18:53.466 NVP: Waiting for prebuffer.. 2449
} LLLLLLLLLLLLLdLLL
} 2009-06-22 15:18:53.480 NVP: Timed out waiting for free video buffers.
} 2009-06-22 15:18:53.482 NVP: prebuffering pause
} 2009-06-22 15:18:53.482 NVP: Waiting for prebuffer.. 2450
} LLLLLLLLLLLLLdLLL
} 2009-06-22 15:18:53.499 NVP: prebuffering pause
}
} messages in mythfrontend.log. mplayer (also VDPAU-enabled, from
} ATrpms) plays but only with considerable stuttering.
}
} On my 2.4GHz Core 2 Duo MacBook Pro running OS X, mplayer (from
} MacPorts) plays the clip about as well as it does on the Pentium 4
} frontend, with lots of complaints of
}
} Too many video packets in the buffer: (40 in 8765321 bytes).
} Maybe you are playing a non-interleaved stream/file or the codec
} failed?
} For AVI files, try to force non-interleaved mode with the -ni option.
}
} VLC 0.9.9a also sort of plays it, but with visible macroblocks
} everywhere.
}

is this the birds flying over towards the begining of episode 1?
which was my test of vdpau to see if it worked :)

--
"Why is it so hot inside this handbasket?"
--
Steve Heistand
steve [at] heistand
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anaerin at gmail

Jun 22, 2009, 4:28 PM

Post #3 of 4 (4391 views)
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Re: Melt your computer with killa.sampla [In reply to]

On Mon, Jun 22, 2009 at 17:19, Steve Heistand<steve [at] heistand> wrote:
> is this the birds flying over towards the begining of episode 1?
> which was my test of vdpau to see if it worked :)

Yup. It's the birds. And it's so bandwidth intensive, I can't stream
it over my 100Mb/Full Duplex/Fully Switched network without pauses.
--
Robert "Anaerin" Johnston
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joshoekstra at gmx

Jun 22, 2009, 9:58 PM

Post #4 of 4 (4368 views)
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Re: Melt your computer with killa.sampla [In reply to]

Robert Johnston schreef op 23-6-2009 1:28:
> On Mon, Jun 22, 2009 at 17:19, Steve Heistand<steve [at] heistand> wrote:
>> is this the birds flying over towards the begining of episode 1?
>> which was my test of vdpau to see if it worked :)
>
> Yup. It's the birds. And it's so bandwidth intensive, I can't stream
> it over my 100Mb/Full Duplex/Fully Switched network without pauses.

The linked sample works just fine in mplayer, vdpau on aan Gigabyte
GA-E7AUM-DS2H with an Intel E7300 played over the 100 Mbit FD network.
The original or some HQ-rip might be different though.

Regards,

Jos Hoekstra
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