[MPlayer-DOCS] Re: Draft: iPod encoding guide

Jeff Clagg snacky at ikaruga.co.uk
Thu Feb 8 00:36:26 CET 2007


On Wed, Feb 07, 2007 at 10:50:22PM +0100, Michael Niedermayer wrote:
> > +  The iPod 5G supports two video formats: MPEG-4 ASP (such as DivX or Xvid)
> 
> do we have to mention 2 random mpeg4 implemenattions here?

Most people have no idea what "mpeg-4" means (but they believe they 
know) so it probably helps to give examples. Most people who have heard
of "DivX" also don't realize that it's not a distinct format. This
guide helps clear up that confusion.

> > +  and MPEG-4 AVC (commonly called H.264).  It supports two audio formats:
> > +  MP3 and AAC.  But it only support one container format: MP4.  This guide
> > +  will explain how to create iPod-compatible files with H.264 video and AAC
> > +  audio in an MP4 container.  <application>MEncoder</application> can not
> > +  create iPod-compatible MP4 files directly, but you can use
> > +  <application>MEncoder</application> to create the video and audio, and then
> > +  use an external program such as <application>mp4creator</application> to
> > +  remux into an MP4 container.</para>
> 
> this is not true, i do have a ipod and mencoder can with lavf generate working
> .mp4 files, so please remove this nonsense and use mencoder with lavf, if it
> doesnt work send a bugreport and ill fix it

What about B-frames?



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