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

Guillaume Poirier gpoirier at mplayerhq.hu
Thu Feb 8 10:07:29 CET 2007


Jeff Clagg wrote:
> On Wed, Feb 07, 2007 at 10:50:22PM +0100, Michael Niedermayer wrote:

>>>+  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?

This shouldn't matter. B-frames aren't supported on iPod.

Here's what the patch has to say about this:

+  <emphasis role="bold">B-frames</emphasis> are not supported.  They
are off
+  by default, so just skip them.  This also means that
+  <option>b_pyramid</option> and <option>weight_b</option> will have no
+  effect.

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