Tool/formula to convert between frame # and hh:mm:ss

[ariga]

Is there any tool that will convert between frame number and time codes ?

Another related Q.
In the hh:mm:ss:xx format, what does xx stand for? How is it different from the hh:mm:ss.sss format that VDub displays?

[hanfrunz]

xx is the number of frames (PAL=25fps, NTSC=29,97 / 30fps)
sss are milliseconds

TC -> framecount
framecount = hours *60 *60 *fps + minutes *60 * fps + seconds * fps + frames

framecount-> TC
hours=int(framecount/60/60/fps)
minutes=int((framecount-hours*60*60*fps) / 60 / fps)
seconds=int((framecount-hours*60*60*fps - minutes*60*fps) /fps)
frames=int((framecount-hours*60*60*fps - minutes*60*fps - seconds*fps)

[ariga]

:thanks:

[JohnnyMalaria]

For 29.97fps using drop-frame timecode (i.e., the normal way), the formula isn't that simple.

You have to take into account that at every whole minute, two frames are dropped except for exact 10 minutes. i.e., the sequence is, for example:

00:01:59;59
00:02:00;02 (whole minute, drop 2 frames)

and

00:09:59;59
00:10:00;00 (whole 10 minutes, don't drop 2 frames)

I don't have the formula immediately to hand but it is straightforward.

[FrozenDog]

TimeCalc - http://www.alcorn.com/support/software.html

[ariga]

More than what I asked for!! Thanks a lot.

[ariga]

Another 'advanced' version
http://www.mediachance.com/dvdlab/freetime.htm