[theora-dev] Theora streaming
giles at xiph.org
Thu Feb 27 17:33:23 PST 2003
On Thursday, February 27, 2003, at 06:21 pm, Arc wrote:
> Here's the question, however. I asked this before, actually.. what
> happens when those segments are different resolutions or framerates?
> this being considered in players and what would be an intelligent way
> for them to cope with a changing frame size, especially when outputting
> to an external video device (ie, full screen to NTSC/PAL tape)?
This is really up to the player. A simple gui player would probably
just resize the window and of course doesn't much care what the
framerate is. For fullscreen playback or spooling to tape for broadcast
you'd obviously want to scale/letterbox to fit and in the latter case
do some kind of intelligent 'telecine' to adapt the framerate. VP3 does
have an aspect ratio field (dan-is that pixel or frame aspect?) so just
switching from pal to ntsc at equivalent resolutions shouldn't cause a
It does sound like If you are putting together this sort of thing it
would provide useful 'realworld' test streams for player implementors.
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