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Dan P wrote:
> When you specify your image_map file name, use concat(str1, str2) to build
> it from the frame_number value. In your case, you could do something like
> this:
>
> ....
> image_map
> {
> png concat("file_", str(frame_number, -3), ".png")
> }
> ....
>
This requires your frame rate to exactly match that of the movie you are
including. A more consistent approach would be to interpolate based on
'clock' rather than 'frame_number'.
(I frequently alter my frame rate when debugging). The following seems
to work as I expected it to do. It returns the filename to be used in
the image_map.
Cheers,
Marvin
////////////////////////////////////////////////////////////////////
//
// Return filename for an embedded movie. Parameters are:
// iclk = clock value for the first frame,
// zclk = clock value for the first frame,
// ifrm = the number of the first frame,
// zfrm = the number of the last frame,
// digs = the number of digits to pad (NEGATIVE),
// base = Portion of filename to put before digits,
// suff = Portion of filename to put after digits.
//
// NOTE: This should not be used when 'clock' is outside of the
// range of 'iclk' to 'zclk'.
//
// For example, from clock 0.0 to 1.0 the following will interpolate
// and return a string in the sequence "file000.png" to "file040.png"
//
// EmbeddedMovie(0.0, 1.0, 0, 40, -3, "file", ".png" )
//
//
#macro EmbeddedMovie(iclk, zclk, ifrm, zfrm, digs, base, suff )
#local nfrm = ifrm+(zfrm-ifrm)*(clock-iclk)/(zclk-iclk);
concat(base, str(nfrm, digs, 0), suff)
#end
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