Frame Rates

m rixon · Post by **m rixon** » Fri Jan 12, 2007 4:42 pm

In several tutorials I notice that they suggest a frame rate of 15.If the final product is to be an AVI movie at 25 fps. will this result in a jerky movement of moving objects?

njdowding · Post by **njdowding** » Fri Jan 12, 2007 7:05 pm

It is best to match your frame rate to the end use so if you are producing an AVI for use in a Pal video production then use 25 FPS. If producing an animated GIF for a web site then 15 FPS is sufficient. Hourses for Courses.

Nick

m rixon · Post by **m rixon** » Fri Jan 12, 2007 7:42 pm

Thank you for your answer,but why do tutorials suggest a frame rate at all.Why don't they just say" set frame rate at your intended output rate" ?

snoops · Post by **snoops** » Sun Jan 14, 2007 12:47 pm

Because they are just tutorials. A newbie may not even know what a frame rate is.

The program help tells you more and that values up to 15 are for non-video animations that remain on the PC.

MrA · Post by **MrA** » Sat Jan 20, 2007 1:59 pm

Another point is, while creating your project, using the intended output frame rate will be slower in rendering while developing, but, using a faster frame rate while developing is easier on you and your cpu. C3PS is vector based, so, once you have developed your project, converting to the ouput frame rate will not change anything you have done. Meaning, all attributes of your objects in your project will be retained.. think of an object as being a collection of records in a database file..

njdowding · Post by **njdowding** » Sat Jan 20, 2007 3:07 pm

Whilst what you say is true MrAmigo it is not always good practice. If frame accurate animation is needed or timing is crucial then using a reduced frame rate causes difficulty. For example if you have a 100 frame animation then at 10fps it will run for 10 seconds. If your final destination is for use in video at 25 fps then finally the animation will run for only 4 seconds. So every time you preview in C3DPS you watching animation at less than half normal speed. This can make it difficult to judge how it really looks.

Nick

m rixon · Post by **m rixon** » Sun Jan 21, 2007 2:29 pm

njdowding : Yes thats what I thought as well.I have just completed a tutorial by VIDOMAN for a rotating star.He suggeat a frame rate of 15.When this is used in a video a 25fps it is decidedly jerky and the movement is too fast.

Post by **Ron P.** » Sun Jan 21, 2007 3:21 pm

m rixon wrote:njdowding : Yes thats what I thought as well.I have just completed a tutorial by VIDOMAN for a rotating star.He suggeat a frame rate of 15.When this is used in a video a 25fps it is decidedly jerky and the movement is too fast.

The tutorial you are referring to is for creating an animated gif, not for producing an animation to be used in a video production. There is considerable differences. Also in that thread the OP was asking on how to use different images, or textures for the different faces on a 3D object. The FPS that I use when constructing examples and tutorials is going to be low to save on file size. Had I used a 29.97 or 25fps then the examples would have taken forever to load.

I will further note that when I am building animations, I will use the lower FPS to play around and get an idea of what it will look like. When I'm to the point that I'm going to create it for my video production I use the NTSC/DVD template. That way the size, fps etc., all match..

Tutorial for Rotating Star.

In some of my other tutorials, I note that for video the FPS should be set to those of your video, PAL=25fps, and NTSC=29.97fps.

Sorry for the confusion..

m rixon · Post by **m rixon** » Mon Jan 22, 2007 12:22 pm

Vidoman.The star tutorial was great and with a little mucking around made a great Chrismas intro for a DVD I have just made.Do you have any other tuts.as I found the star tut.particulaly east to follow.Thanks .

MrA · Post by **MrA** » Mon Jan 22, 2007 11:09 pm

vidoman wrote: Had I used a 29.97 or 25fps then the examples would have taken forever to load.

Exactly why I prefer to use the lower frame models.. I just finished an intro animation, with 835 frames of video wrapped around a spining box that comes to full face with my company logo that took almost 8 hours to render at full NTSC frame rate, but, takes about 5 minutes to render at 15 frames a sec under a smaller 320 x 240 develemont window...