kpolina wrote:
I tried SK's method to check the frames/sec on interVideo's WinDVD and found the frames/sec varied from 20-26/sec while most of the time it was 23. Then, I also did same test with DEI's ROJA(Hindi) and it too had frame rate that varied from 20-26/sec. I don't know what I am doing wrong. Could it be software dependent?
How I did this test was on the bottom of the WinDVD screen on status bar there is Chapter number and Time display. I put the movie on pause and moved frame by frame until I saw the seconds part of time make a change. From here I counted the frames until I saw a second part change.
I get consistent results from my Sony DVD player but have to count it certain way.
What happens is, when I move forward using jog-shuttle, sometimes frame doesn't change. I count only those that are indicated by "STEP" on the screen. For all NTSC DVDs I get 24 steps per sec if progressive and 30 steps per sec if not in Film mode or perhaps we can call them interlaced.
Film has 24 frames per sec, and if they are kept separated that way, some of the frames have to be repeated to make it 60 half frames per sec. When my DVD player indicates "STEP" it means that it has found a new frame. So the DVD player will find 24 original film frames if they have been sorted that way and will find 60 half or 30 full frames if parts of different film frames have been mixed up in each video frame as a result of 24 vs. 30 (half of 60) conversion. This can be due to “improper Film to NTSC DVD conversionâ€, “Film to NTSC to PAL to DVD conversion†or for “Film to PAL to NTSC to DVD conversionâ€.
Note that this count technique will not work for anything other than “NTSC-24 fps Film†combo. Also, different DVD players, drives-softwares may have different capabilities/ techniques.
Rana