[mythtv-users] Dumb question about VDPAU

[Nick Rout]

On Mon, Mar 2, 2009 at 2:17 PM, Robert McNamara
<robert.mcnamara at gmail.com> wrote:
> On Sun, Mar 1, 2009 at 5:13 PM, Ramon Redondo <malinon at gmail.com> wrote:
>>
>> So I still haven't found anything that says "yes, MPEG4 type NUV files
>> generated from the MythTV software encoder will be decoded and deinterlaced
>> by VDPAU.
>
> No, they do not.  Myth's software encoded MPEG-4 files are MPEG-4 part
> 2 (ASP, of which xvid and divx are commonly recognized
> implementations).  VDPAU supports only MPEG-4 Part 10 (h.264).
>
> Robert

(Not necessarily advice to you Robert, I'm sure you know all this).

Indeed these monikers are very confusing. mpeg means many things to
many people. It took me ages to get the nomenclature correct.
wikipedia really helps.

First step is to get your head around the differences between
"containers" and "codecs", and banish the term "format" from your
vocab.

Then learn to be precise in your terms. Don't talk mpeg4 without
distinguishing the two main codecs (ASP|Part2) vs (AVC|Part10|h.264).

Then learn to tell the difference between a standard (h.264 and mpeg4
part2 are standards) vs an implementation of the standard (x264 is an
implementation of h.264, xvid and divx are implementations of mpeg4
part2)

after that its just reading and reading wikipedia until you get the
hang of it :-)