You might find this informative:
http://www.longtailvideo.com/support/forums/jw-player/feature-suggestions/6551/ogg-vobis-support
Livia,
you don't need flash to play ogv videos. For example following applet tags show ogv with java applet:
<applet archive="http://www.theora.org/cortado.jar" code="com.fluendo.player.Cortado.class" height="440px" width="440px">
<param name="url" value="
Just replace the url value with the url of your ogv video. (You need to have correct role on your siteto be able to use applet tags of course...)
More info http://www.theora.org/cortado/
Or another example with some parameters:
<applet archive="http://www.theora.org/cortado.jar" code="com.fluendo.player.Cortado.class" height="360" width="640">
<param name="url" value="
<param name="BufferSize" value="4096" />
<param name="BufferHigh" value="25" />
<param name="BufferLow" value="5" /> </applet>
A list of available parameters in Cortado is found from
http://git.xiph.org/?p=cortado.git;a=blob;f=README
So if you don't for example want to autoplay ogv videos set
<param name="autoPlay" value="0" />
or
<param name="autoPlay" value=0 />
Highly recommend a totally FREE OGV Player which supports more than 160 formats as the input formats.
It also can decode OGV to MP4, MOV, WMV, AVI and more and encode MP4, MOV, WMV, AVI, etc to OGV