Maybe these links will help: http://cnyack.homestead.com/files/modulation/ntsc_sig.htm http://en.wikipedia.org/wiki/Frame_rate http://en.wikipedia.org/wiki/NTSC http://www.afterdawn.com/glossary/terms/ntsc.cfm http://www.fixya.com/support/t174610-ntsc_frame_rate_29_97_hz ----- Original Message ----- From: "Klaus Schmidinger" <Klaus.Schmidinger@xxxxxxxxxx> To: <vdr@xxxxxxxxxxx> Sent: Monday, January 05, 2009 3:31 AM Subject: Frames per second PAL vs. NTSC > 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. > > Klaus > > _______________________________________________ > vdr mailing list > vdr@xxxxxxxxxxx > http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr _______________________________________________ vdr mailing list vdr@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
