[mythtv-users] XvMC, Plextor Question, and Sound

[Brian Wood]

On Feb 11, 2006, at 11:53 AM, Nathan Lutchansky wrote:

> On Sat, Feb 11, 2006 at 01:36:35PM -0500, Jesse Guardiani wrote:
>> On Friday 10 February 2006 6:11 pm, Nathan Lutchansky wrote:
>>> On Fri, Feb 10, 2006 at 03:24:30PM -0700, Brian Wood wrote:
>>>> On Feb 10, 2006, at 2:12 PM, Jesse Guardiani wrote:
>>>>> In addition to XvMC support, recording to Mpeg-2 would allow for
>>>>> DVD burning via MythBurn.
>>>>
>>>> Well the world is going the other way, towards mpeg4. I heard that
>>>> DirectV's newest satellite is putting out mpeg4 streams, with
>>>> Echostar to follow soon.
>>>
>>> Actually, the world is going to H.264, which isn't supported in any
>>> video card yet as far as I know.
>>
>> Aren't you both right? Isn't H.264 just another name for Mpeg-4 layer
>> 10 or something?
>
> H.264 is the ITU's designator for the standard, and ISO has issued the
> same text as ISO/IEC 14496-10.  Collectively, the ISO/IEC 14496
> standards are known as MPEG4, so technically, yes, H.264 is a video
> coding format that is part of the MPEG4 standard.  However, the  
> original
> video coding in the 14496 series was 14496-2, which what is most  
> people
> think of as "MPEG4 video".  So I think if you tried to refer to H. 
> 264 as
> "MPEG4 video" you would just end up confusing everyone.  If you still
> want to say MPEG4 though, you could call it "MPEG4 AVC" (AVC=Advanced
> Video Coding) as that was the working name of the project.  -Nathan


And let's not forget "DiVX", which might be described correctly as  
mpeg-4 as well, although extremely tied up in marketing.

I really meant "mpeg4" in the generic sense of the entire 14496  
family and really meaning "beyond mpeg2". I didn't want to go into  
all of the permutations on the list, but clearly Nathan has a good  
point that "mpeg4" to most people is 14496-2, if they are aware of  
the differences at all :-)