[MPlayer-DOCS] Re: Draft: iPod encoding guide
michaelni at gmx.at
Wed Feb 7 22:50:22 CET 2007
On Thu, Jan 11, 2007 at 07:22:27PM -0500, Mark Pilgrim wrote:
> Oh hell, I found some stupid copy-and-paste errors. Just ignore draft
> 1 and let's all start the discussion with draft 2 (attached).
> + 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?
> + 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
> + <emphasis role="bold">Maximum bitrate</emphasis>: the iPod 5G supports a
> + maximum of 768kbps, and it enforces this limit very strictly. This means
> + the bitrate can <emphasis>never</emphasis> exceed 768kbps.
> + <application>MEncoder</application> can enforce this restriction with
> + <option>-x264encopts vbv_maxrate=768</option>. The
> + <option>vbv_maxrate</option> option requires the presence of a
> + <option>vbv_bufsize</option> parameter; <option>vbv_bufsize=244</option>
> + is a good default value.
iam not so sure about these, sadly i didnt encode anything for the ipod lately
but somehow i think i had much higher bitrates working
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
There will always be a question for which you do not know the correct awnser.
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