[maemo-developers] [maemo-developers] Ogg Vorbis and the N800 - Theora

[From: MoRpHeUz]

> Of course I could, but Simon Pickering already wrapped the plugins up to a
> archiv:
> http://people.bath.ac.uk/enpsgp/temp/vorbis-stuff.tar.gz
> Since we used the same compiler flags it should be the same.

That's perfect, already downloaded it! =)

> cycles than the floating point vorbis plugin. I just did't figure out the
> right gst-launch syntax yet.

I'll ask some people here at work to try a gst-launch syntax so we can
try this...

> The mogg people integrated the tremor plug-in into the audio player on the 770
> just perfect. As soon as we know more about a working combination betwen
> theora and tremor we could ask them for help :-)

Perfect =)

> More testing would be good.
> I wish I had more time. Too bad I have to work for food ;-)

Well, my work depends on this, so...I'm working for food right now ahaha =P


Best regards,


>
> > On 2/8/07, Krischan Keitsch <krischan.keitsch at alumni.tu-berlin.de> wrote:
> > > Am Donnerstag, 8. Februar 2007 schriKrischan KeitsKrischan Keits eb
> MoRpHeUz:
> > > > This ogg files you're playing contain video ? I was just able to play
> > > > audio until now...
> > > >
> > > >
> > > > Best Regards,
> > > >
> > > >
> > > > MoRpHeUz
> > >
> > > Yes, I also build the theora plugin.
> > >
> > > I did a short test this morning:
> > >
> > > Theora and vorbis on n800
> > > I transcoded the "Discovery.avi" with ffmpeg2theora with the default
> > > settings.
> > >
> > > Theora video:
> > > 352x208
> > >
> > > 1) theora video only
> > > gst-launch-0.10 filesrc location=Discovery.ogg ! oggdemux ! theoradec !
> > > xvimagesink
> > >
> > > cpu: ~45%
> > > The theora video is beeing played in a window not full screen. The video
> > > playback is good. No skips. :-) Looks promissing. I will try some higher
> > > resolutions & frame rates soon.
> > >
> > >
> > > 2) theora video and vfp-vorbis decoding
> > > gst-launch-0.10 filesrc location=Discovery.ogg ! oggdemux name=demuxer !
> > > {queue ! theoradec ! xvimagesink} {demuxer.!queue ! vorbisdec !
> > > audioconvert ! dsppcmsink}
> > >
> > > cpu: ~ 80 (45% & 35%)
> > > Vorbis playback using the vfp causes ~35% cpu. Theora decoding is like in
> > > 1). It adds up to ~80% and I experienced many  skips. Playback is not in
> > > sync, halts, skips ...  :-(
> > >
> > >
> > > However when I try to use tremor (just takes ~12% cpu) based audio
> > > decoding I am out of luck.
> > >
> > > If it is possible to let the tremor plugin do the audiodecoding, what
> > > would be the right gst-lanuch string?
> > >
> > > I need some advice from you gst gurus!
> > >
> > > Regards Krischan
> > >
> > > PS: 770 & n800 are not _just_ internet tablets. They are a hell of a
> > > multimedia device. The more time I spend using my n800 and 770 the more
> > > impressed I get!
> > >
>
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