A few questions in my mind

[Nadav]

1. When moving a CD Track (music) to my comp, it takes about 50 mb in wav file and when converting to mp3 file it takes about 3.5 mb, Now of course there is some lose in the way, So what happen when converting back to wav? Did the "lose" come back to the wav file like it was in the begining?

2. Almost all my movies are encoded in Divx or Xvid in FPS of 23.97 But I'd never seen a DVD with that FPS so what where when it's been in use???

3. I'm using gordian Knot for calculating, in gordian Knot there is a lot of options for calculating and I did'nt found any other single small software that have the same calculating system like in Gordian Knot, mybe you know? I mean why do I need to Download the all software when I want only the calculatore?

Thanks in advance.

[Enchanter]

Re: A few questions in my mind

Originally posted by Nadav
1. When moving a CD Track (music) to my comp, it takes about 50 mb in wav file and when converting to mp3 file it takes about 3.5 mb, Now of course there is some lose in the way, So what happen when converting back to wav? Did the "lose" come back to the wav file like it was in the begining?

No. The discarded data is permanently lost.

Originally posted by Nadav

2. Almost all my movies are encoded in Divx or Xvid in FPS of 23.97 But I'd never seen a DVD with that FPS so what where when it's been in use???

NTSC DVDs generally have a framerate of 29.97fps. PAL DVDs have a framerate of 25fps.

Originally posted by Nadav

3. I'm using gordian Knot for calculating, in gordian Knot there is a lot of options for calculating and I did'nt found any other single small software that have the same calculating system like in Gordian Knot, mybe you know? I mean why do I need to Download the all software when I want only the calculatore?

You don't really need to install the whole package. Just download and install the GordianKnot main EXE file.

[setarip]

"2. Almost all my movies are encoded in Divx or Xvid in FPS of 23.97 But I'd never seen a DVD with that FPS so what where when it's been in use???"


Actually, if you loaded NTSC DVDs into Flask and ran the player, you'd discover that MANY NTSC DVDs are actually 23.976Fps "FILM""telecined" (converted) to 29.97fps...

[Nadav]

Well ...

1. **** !

2. So you say that the Force Film is actually a "sign" to a movie that was in the begining 23 and then encoded to the DVD in 29 ?
All the Films (in USA) are filmed in 23.976 FPS ?

3. I know that I can only use the EXE of GordianKnot but I have wondering Why isn't Gordian Knot release a seperate software for calculating? I mean their calculator is EXELLENT !!!
I was thinking mybe GordianKnot has release the Source Code for thire software and then I can Complie to EXE only the part of the calcultor code. Mybe I'll send them Email about that.

[UncasMS]

why should TheWEF make his sources available?

above that afaik some of the source were contributed and promised not to be published.

[khp]

Re: Well ...

Originally posted by Nadav

2. So you say that the Force Film is actually a "sign" to a movie that was in the begining 23 and then encoded to the DVD in 29 ?

When you use force film on a DVD, it's because it's stored as 23.976 fps on the DVD. When played on a DVD player, the player preforms telecine to bring the fps up to 29.97. ForceFilm disables the telecine and reads the video directly at 23.976.

Originally posted by Nadav

All the Films (in USA) are filmed in 23.976 FPS ?

NO. Movies are shot at 24 fps. To make it playable on NTSC Televisions it's slowed down to 23.976 fps and telecine is applied to bring it up to 29.97. Sometimes Telecine is applied before storing the data on the DVD, but most often it's stored at 23.976, and it's left to the player to apply telecine.

[Nadav]

OK I got it thanks, but -->

So I understnad that NTSC TV can't read 24 or 25 or 23.976 it can read only 29.976.
So the DVD Player are telecined the movie to be display in 29.976, correct ?

Is that mean that even when I have DVD lets say in theory that the DVD contain 18 FPS so the DVD play it in 29.976, correct ?

Why not to Shot in 29.976 FPS or 30 FPS?

It's very intresting me that's all

Thanks for the responses so far .

[khp]

Re: OK I got it thanks, but -->

Originally posted by Nadav
So the DVD Player are telecined the movie to be display in 29.976, correct ?

The DVD player preforms telecine on film encoded NTSC DVD's yes.

Originally posted by Nadav
Is that mean that even when I have DVD lets say in theory that the DVD contain 18 FPS so the DVD play it in 29.976, correct ?

NO. you can't encode a DVD at 18 fps.
NTSC DVD's must be encoded at 720*480 23.976 FILM, or 29.97 NTSC.

Originally posted by Nadav
Why not to Shot in 29.976 FPS or 30 FPS?

Historically reel based film has been shot at 24 fps since the dawn of time. And reel film surpasses NTSC quality by an order of mangnitude. Shooting at a different speed just to make it easier to convert to some arcane TV technology doesn't make a lot of sense for the movie makers.

24 fps is fast enough to avoid making the movie look choppy, increasing the speed to 30 fps, would increase the amount of raw film needed to shoot the movie by 25%, and make reel changes more frequent, which would increase the const of making the movie