Add Fullscreen button and change default playback size for videos

[m_a_b]

I have been reading a lot of posts about changing the video size, but can't find what I am looking for.

First, is there any way to change the default playback size so if the file properties shows 0x0 that it plays either as the video's original size or so that I can specify a width and height 720x480?  I do batch upload of all the videos and don't want to edit the file details for every video, so it would be much better to find where the 320x240 default is specified and change it.  The only thing I found similar to this was for using upload.php instead of batch add and that is not an option for me.

Second, I upload mostly mpg videos and a few mov's but was wondering if there is a way to add a "view fullscreen" button to the player embed?

[Joachim Müller]

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[m_a_b]

ok, so how about this "one question"... where can I find where the object for movies is built?