Comment 18 for bug 722285

Follow-up on #11 -- Goocanvas issue?
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http://developer.gnome.org/goocanvas/unstable/goocanvas-coordinates.html -- Coordinate Limits

<< GooCanvas uses the Cairo graphics library to render canvas items. For performance reasons Cairo uses 32-bit fixed point integers internally when rendering graphics, with 24 bits used for the integer part of values and 8 bits used for the fractional part. This means that values are limited to roughly +/- 8,388,608. >>

Since there is also a decimal part on 8 bits, which encompasses the range from 00 to 99 (but not to 999), Goocanvas can work with coordinates ranging from -8,388,608.00 to +8,388,607.99 . Assuming that a desired time-line precision would be 1/100 sec, Goocanvas should be able to accommodate a time-line of 16,777,216 seconds, which is ... 4660 hours (and a handful of additional minutes, around 20)!!
And even if one wanted to go for a 1/1000 sec precision, Goocanvas would accommodate a time-line of 466 hours.

The 2-hour video projects that we are speaking about should fit in, couldn't they?