[Theora] Playback too slow?!

Ole Tange tange at tange.dk
Tue Mar 29 14:46:59 PST 2005

On Tue, 29 Mar 2005, Ivan Popov wrote:

> An excerpt from
> http://lists.xiph.org/pipermail/theora/2004-December/000735.html
> --------------------------------------------------------------------------
>  ...
> I encode like that:
> theora-encoder -va -vf -va crop=704:424,scale=528:320,hqdn3d=4:3:6 \
>                -s 64 -S 45 \
>                -a 0 -v 5.4 -o 528-320-5.4-0-436.ogg \
>                dvd://1

How do you detect these values?

I guess 704:424 is from 'mplayer -vf cropdetect'. 528:320 and 4:3:6 is
probably your own idea though it is not clear to me why you chose
precisely these values. But where do -s 64 -S 45 come from? What I am
after is: Could these be autodetected so the normal user will not need to
figure these out?

I am all for configurability. But if we have good defaults that give
excellent results in most cases then it will be easier for non-geeks to
use theora without tweaking.

I am quite impressed with the speedup your suggestions made. From 90% CPU
usage I am now around 40% - i.e no framedropping and quite usable. Thank

The Patented Word Processor

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