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

[From: Krischan Keitsch]

Am Montag, 12. Februar 2007 schrieb Kalle Vahlman:
> 2007/2/11, Krischan Keitsch <krischan.keitsch at alumni.tu-berlin.de>:
> > After failing to combine theora and tremor I played with the n800 web
> > cam. Theora encoding can be done by (as example)
> >
> > gst-launch-0.10 v4l2src !
> > ffmpegcolorspace ! "video/x-raw-yuv",width=640,height=480,framerate=30/1
> > ! theoraenc bitrate=100 ! oggmux ! filesink location=target.ogg
>
> You might want to limit the framerate, at least if you plan on playing
> it back on the N800... ;)
>
> > Well, playback is in fast forward mode then ;-) Do I need to add some
> > kind of a 'timeoverlay' ?
>
> My guess would be that at that size and framerate the encoding is not
> keeping up with the stream. Do you see this with say 352x288 at 15fps?

Thanks for the reply.
This works better:
gst-launch-0.10 v4l2src ! 
ffmpegcolorspace ! "video/x-raw-yuv",width=160,height=120,framerat=10/1 ! 
theoraenc bitrate=100 ! oggmux ! filesink location=target.ogg

As soon as I have some more spare time I might where the limits are concerning 
resolution, framerate and bitrate. 

Regards Krischan
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.maemo.org/pipermail/maemo-developers/attachments/20070212/3e1d3f6d/attachment.pgp