AfterDawn: Tech news

New guide series launched

Written by Rich Fiscus (Google+) @ 06 Jun 2007 17:03 User comments (7)

New guide series launched We have a new guide in our Guides section. It's actually the first in a series of guides I'm calling Digital Video Fundamentals. The series will be aimed toward beginners who want to understand the basics. Today's new guide is on Frames and Framerates.
Read it at:
http://www.afterdawn.com/guides/archive/digital_video_fundamentals-frames_frame_rates.cfm


Visit our guides section for more guides on digital video as well as other topics.

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7 user comments

16.6.2007 17:05

If you have any comments, questions or corrections for this guide I do watch to see what people have to say.

26.6.2007 17:35

seeing as that the psp (and possibly many others) forums are being suffocated by newbies that ask the same question over and over could you make it so certain keywords in the posted thread name set off some alert to tell a newbie that before he posts a thread he should see if there is already a guide for the problem

36.6.2007 18:42

I have an oddball request:

When recording with Fraps at 60fps, the video plays back smooth on my pc, but when i convert to 27.?? fps for dvd format, it looks jerky and hurts the eyes. Factory pressed DVD's are running at 27.?? frames, but look smooth.

Thats something ive been wondering for a while now.

Bah anyway good luck with the guide. I learned a ton of stuff here and plenty more to come im sure! :)

47.6.2007 13:03

Very cool.

Nice addition.

58.6.2007 8:58

Originally posted by limelight:
I have an oddball request:

When recording with Fraps at 60fps, the video plays back smooth on my pc, but when i convert to 27.?? fps for dvd format, it looks jerky and hurts the eyes. Factory pressed DVD's are running at 27.?? frames, but look smooth.

Assuming we're talking about an NTSC DVD it will need to be converted to 29.97fps. Depending on how you're converting the framerate, a number of things could be happening. If you were to drop every other frame you'd end up with 30fps video, which is almost what you're looking for (29.97 = 30/1.001). For a very short video clip you might be able to simply slow down the video to the proper framerate and leave the audio alone, but for longer files this wouldn't work because you'd lose audio sync eventually. If you adjust the audio as well you shouldn't lose sync and it shouldn't be jerky.
Quote:
Bah anyway good luck with the guide. I learned a ton of stuff here and plenty more to come im sure! :)

Thanks. Good luck with your video conversion :)

69.6.2007 1:08

Originally posted by faqman98:
seeing as that the psp (and possibly many others) forums are being suffocated by newbies that ask the same question over and over could you make it so certain keywords in the posted thread name set off some alert to tell a newbie that before he posts a thread he should see if there is already a guide for the problem

Life depends on newbies.....did yyou start out smart?

726.7.2007 19:59

@Kraut1

That is so true...

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