[mythtv-users] nuvexport errors doing DVD export

David Whyte david.whyte at gmail.com
Sat Jul 16 00:40:37 EDT 2005

Heh, I hope someone is following this thread....Chris??? :P

So I chose to nuvexport to DivX last night usin g--ffmpeg and it was
really quite quick, 30 mins for a 40 minute MPEG2, including the
downsizing, though I turned of noise reduction etc.

The problem is, I am running the latest version of ffmpeg and it seems
to have used data partitioning in the encoding of the DivX video and
that is NOT supported by BetaPlayer (or The Core Pocket Media Player
as it is now called).

I can see you can enable or disable this from the command line using
'-part' option in ffmpeg, but I wonder how I can do this from
nuvexport.  Given my plan is to use nuvexport as a UserJob, I can't
see how to prevent ffmpeg from doing that by default.

Any ideas....please =D


On 7/15/05, David Whyte <david.whyte at gmail.com> wrote:
> So, using '--transcode' the thing transcode was going to take 3
> lifetimes to complete, so I took the fact that the power cut halfway
> through as a sign that I should do this using the apparently much
> faster ffmpeg.
> So I got the latest source from ffmpeg cvs, and compiled and installed
> OK.  Now running nuvexport in --ffmpeg mode, I can select XviD (w00t)
> and all the options seem to be OK, accepting the defaults.  It says
> its waiting for mythtranscode  and then starting ffmpeg, and after a
> wee while it crashes with the nasty pipe error.
> So I debugged and modified the ffmpeg forked line to remove the
> yuvdenoise filter and it went through, taking about an hour to
> transcode the 40 minutes DVB-T video down to 320x240 XviD which I was
> happy with performance wise.  The problem is, the video is not
> playable though the sound is OK both WindowsMedia and
> MediaPlayerClassic both complain.  I put this down to the fact that I
> possibly mistimed the starting of ffmpeg given I was doing this from
> --debug mode.
> I have since started the transcode using nuvexport, deselecting
> denoise and deinterlace as I selected the options and now, the
> transcode is going to take about 3 hours, even though it is running at
> 20 fps (isn't Mpeg2 only 25fps?).
> So, to my question.  How can I get reasonable good and fast
> transcoding?  Is ffmpeg faster?  Given I am planning on watching these
> on the PocketPC only I may aswell turn of deinterlacing and noise
> reduction right?  Should I leave the recording at the native
> resolution and let the PDA struggle or is it right to downsize?
> Any help is *greatly* apreciated.
> Whytey
> On 7/14/05, David Whyte <david.whyte at gmail.com> wrote:
> > On 7/14/05, David Whyte <david.whyte at gmail.com> wrote:
> >
> > >
> > > What is the transcode option and how does it differ from normal
> > > nuvexport?  Why can I transcode to Xvid but not nuvexport.  I am going
> > > to be able to play these in BetaPlayer on the PocketPC aren't I?
> > >
> >
> > I think the nuvexport man page just helped me out.
> >
> > So, you can either specify to use ffmpeg or the transcode suite.
> > Seems transcode is setup on my box where as ffmpeg is not.
> >
> > The transcode seems to have worked fine, with a fairly decent output,
> > though it took 70 minutes to transcode a 22minute show from nuv divx
> > to xvid.
> >
> > I am happy all the same.  Now I can start to catch up with my viewing :P
> > --
> > --
> > GMAIL is 'da bomb baby....YEAH
> >
> > I have GMail invites, if you want one, email me direct.
> >
> --
> --
> GMAIL is 'da bomb baby....YEAH
> I have GMail invites, if you want one, email me direct.

GMAIL is 'da bomb baby....YEAH

I have GMail invites, if you want one, email me direct.

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