[vdr] Frames per second PAL vs. NTSC

Klaus Schmidinger Klaus.Schmidinger at cadsoft.de
Mon Jan 5 11:31:37 CET 2009

In order to correctly handle the progress indicator for NTSC
recordings I'm now determining the frame rate from the
actual data. With PAL's 25 frames per second the distance
between two frames is 3600 "ticks" of 1/90000s. With NTSC
this number is 3003, which results in 29.97002997003 fps.
Is NTSC's frame rate really that "odd"? I thought it would
be an even 30 fps.


More information about the vdr mailing list