[mythtv-users] hdtv file size?

Michael T. Dean mtdean at thirdcontact.com
Thu Feb 2 05:08:02 UTC 2006


Steven Adeff wrote:

>On 2/1/06, Chad <masterclc at gmail.com> wrote:
>  
>
>>>>If its already in a compressed HD format that all HD
>>>>equipment plays, why would you want it in anything else?
>>>>        
>>>>
>>>The answer is rather obvious to me: Disk space.
>>>      
>>>
>>And to take that one step further, download size.  It's my belief that
>>in the relative near future, TV will move to something similar to
>>Comcast's On-Demand, or a better example fully supported/legal
>>Torrentocracy.  So when we do go that route, downloading
>>mpeg4-HD-quality shows will be somewhere in the ballpark of what, 1/4
>>the filesize of the mpeg2 equivilent.  Besides, doesn't some of the
>>Via video chipsets already support Hardware mpeg4 acceleration?  Yeah,
>>here's the link that talks about it:
>>
>>http://wiki.openchrome.org/tikiwiki/tiki-index.php?page=Supported+hardware+and+caveats
>>    
>>
>you guys are all making the assumption that mpeg4 is somehow better
>than mpeg2 for HD. It is not. It does allow you to make smaller files
>for similar quality, but you could as well do the same reencode in
>mpeg2 and get similar results.
>
>You guys need to start thinking in terms of x264,
>
x264 is a free library for encoding H.264 video streams, so really, the 
H.264 is more important than the library used to code the H.264

> its a much better
>succesor to mpeg2 for HD than mpeg4 is. Its not perfect, and takes a
>lot more horsepower to encode and playback, but for filesize concerns
>is the best method.
>
>Of course if you don't care about the loss of quality with lower
>bitrate encodes with mpeg4 then I guess none of this matters...
>  
>
heh.  ITU-T H.264 = ISO/IEC 14496-10 =  MPEG-4 Part 10 = MPEG-4 AVC 
(Advanced Video Coding).

So, MPEG-4 isn't the answer, MPEG-4 is the answer...

Mike


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