[mythtv-users] Somewhat OT: Myth2iPod Transcode Succeeds but Won't Sync

Douglas Wagner douglasw0 at gmail.com
Mon Apr 30 16:22:28 UTC 2007


And just to close this issue out that worked perfectly.  Thanks very much
for the information.

--Douglas Wagner

On 4/28/07, Douglas Wagner <douglasw0 at gmail.com> wrote:
>
> Ok, that makes a HUGE amount of sense now.  You tied all the pieces
> together for me, thanks VERY much.  Testing with mpeg4 format now as that
> saves my wife the step of having to run the AtomicParsley program every
> time.
>
> More when the new transcode gets done.  Thanks again for the help Jon.
>
> --Douglas Wagner
>
>
> On 4/28/07, Jon <jon at sd-6.org> wrote:
> >
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> >
> >
> >
> > Douglas Wagner wrote:
> > > Ok, I kind of need to remediate a few minutes.  I just realized last
> > > week that I could even do any of this.  I'm a computer tech but I know
> > > almost nothing about video, codecs, etc.
> > >
> > > To my knowledge I need to be using mp4 (MPEG-4) format to get the ipod
> > > to correctly play the files.  I'm not sure where h264 comes in, is
> > that
> > > a standard format for the video?  (I probalby should have posted that
> > > i'm recording via a pchdTV3000 card, the recordings are dropped into
> > my
> > > video directory in mpg format.)
> >
> > MP4 is a container, not a codec.  The iPod accepts mpeg4 and h264 video
> > video formats.  mpeg4 includes many different implementations, xvid,
> > divx, etc,
> >
> >
> > >
> > > My assumption at this point is that myth2ipod is asking nuvexport to
> > > produce a file that is out of the iPod's range of play.
> >
> > The file will play fine on the iPod.  iTunes refuses to upload it to the
> >
> > iPod unless it was created by quicktime.  The way this is enforced is by
> > a custom atom in the mp4 file.  ffmpeg does not currently add the atom.
> > AtomicParsley can be used to add the atom.  This atom only applied to
> > h264 video, if you use xvid you won't have to worry about this.  To do
> > this change $nuvoptions to this
> > my $nuvoptions = "--mode=iPod --nice=19 --cutlist --nodenoise
> > - --nodeinterlace --nomultipass --mp4_codec=mpeg4";
> >
> > Or use the AtomicParsley command given in the previous message.
> > Or use something besides iTunes.
> >
> >
> > >
> > > What I don't understand is how to tell nuvexport to do something
> > > differently than it's doing now.  I'm not sure where i'd tell
> > myth2ipod
> > > to encode in xvid format or what that would do for me.  Honestly i'm
> > > pretty lost on this whole thing.
> >
> > See above
> >
> >
> > > I'll take a look at AtomicParsley and see if I can get some info from
> > > it.  Any additional information anyone would like to provide (or a
> > > tutorial on some of this transcoding stuff) would be most helpful.
> >
> > Again, and this is only my opinion, use mpeg4 instead unless you are
> > connecting your ipod to a TV.  The screen is way to small on the ipod
> > for the difference to matter.  The files will be slightly larger at the
> > same quality, but since they are less compressed it will also give you a
> >
> > boost in battery life.
> >
> >
> > >
> > > --Douglas Wagner
> > >
> > - --
> > Jon
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>
>
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