[mythtv-users] OT Wall mount or other setups
Raymond Wagner
raymond at wagnerrp.com
Mon Oct 27 08:44:31 UTC 2008
To be honest, I'm surprised Apple released a trailer that low bitrate.
The Quicktime h.264 encoder does not support CABAC, only CAVLC, which is
considerably less complex. Think of gzip versus bzip2. CABAC tacks on
an extra 30-40% CPU requirement, so expect maybe 4.5mbit at most.
Better than I had expected.
belcampo wrote:
> Apple trailer 720p with following from mediainfo
> Complete name : /mm04/videos/HD/PinkFloyd2006.mov
> Format : MPEG-4
> Format profile : QuickTime
> Codec ID : qt
> File size : 151 MiB
> Duration : 4mn 8s
> Overall bit rate : 5 099 Kbps
> Movie name : David Gilmour
> Encoded date : UTC 2007-10-29 22:17:35
> Tagged date : UTC 2007-10-29 22:18:08
> Comment : All Rights Reserved
>
> Video
> Format : AVC
> Format/Info : Advanced Video Codec
> Format profile : Main at L3.1
> Format settings, CABAC : No
> Format settings, ReFrames : 2 frames
> Codec ID : avc1
> Duration : 4mn 8s
> Bit rate mode : Variable
> Bit rate : 4 969 Kbps
> Width : 1 280 pixels
> Height : 720 pixels
> Display aspect ratio : 16/9
> Frame rate mode : Constant
> Frame rate : 25.000 fps
> Resolution : 24 bits
> Colorimetry : 4:2:0
> Scan type : Progressive
> Bits/(Pixel*Frame) : 0.216
> Stream size : 147 MiB (97%)
> Encoded date : UTC 2007-09-19 00:24:49
> Tagged date : UTC 2007-10-29 22:18:08
>
> Audio
> Format : AAC
> Format/Info : Advanced Audio Codec
> Format version : Version 4
> Format profile : LC
> Format settings, SBR : No
> Codec ID : 40
> Duration : 4mn 8s
> Bit rate mode : Constant
> Bit rate : 124 Kbps
> Nominal bit rate : 128 Kbps
> Channel(s) : 2 channels
> Channel positions : L R
> Sampling rate : 44.1 KHz
> Resolution : 16 bits
> Stream size : 3.68 MiB (2%)
> Encoded date : UTC 2007-09-19 00:24:49
> Tagged date : UTC 2007-10-29 22:18:08
>
> is played < 70% load according to top
> Raymond Wagner wrote:
>
>> As many times as this has been said before, I'll say it again. Claiming
>> a machine will do 720p h264 is COMPLETELY MEANINGLESS. The two primary
>> measurements of hardware requirements are bitrate and entropy encoding
>> (CABAC is more intensive than CAVLC). Beyond that, more reference frames
>> somewhat increase complexity, and requires additional buffer memory. As
>> long as you have hardware accelerated video scaling (Xv), resolution
>> doesn't really matter. I doubt an Atom at 1.6GHz could handle more than
>> maybe 3-4Mbps, which puts it well below any 720p h264 stream you're
>> going to get from a legitimate source.
>>
>> While the EEEBox would do perfectly fine for HD mpeg2, HD h264 really
>> needs considerably more power.
>>
>> belcampo wrote:
>>
>>> The ASUS EEEBox is standard equipped with a mounting kit for mounting at
>>> the back. The Atom-inside does 720p with h264 very well. Cost for the
>>> system is 249.00 EUROS incl. 19% VAT
>>> Raymond Wagner wrote:
>>>
>>>
>>>> A while back, someone did a guide on hiding a MiniMac behind an Apple
>>>> Cinema display
>>>> (http://inside.glnetworks.de/2007/12/13/mac-mini-mediacenter-in-38-room-space/).
>>>> Depending on what you want to decode, you may want to look into a Dell
>>>> Studio Hybrid. Its only slightly larger than the Mac, and offers more
>>>> power in the high end versions.
>>>>
>>>> Barry Williams wrote:
>>>>
>>>>
>>>>> I am just now getting a LCD/Plasma screen for the lounge and I was
>>>>> thinking about wall mounting it but not sure what to do with the PC
>>>>> suggestions and experiences would be appreciated photo's / links if
>>>>> available. I am trying to do away with the entertainment unit and
>>>>> minimize used space, cheers
>>>>> ------------------------------------------------------------------------
>>>>>
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>>>>>
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>
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