VIRB Edit 29FPS?

I uploaded a video to VIMEO through the web interface and after the upload was done, I got this warning:

Just a warning…

We have some recommendations for this video:
This video uses a non-standard frame rate (29 FPS). This can sometimes cause problems during playback (such as the video and audio not syncing). Check out our Compression Guidelines for more information.

End quote

Is this erroneous, or is VE or the VIRB itself really putting out a non-standard frame rate?

0 SPG100 over 11 years ago

I don't how Virb Edit export but 29FPS it is the standard NTSC format worldwide, in Europe we use 25FPS called PAL. All the others (30FPS, 60FPS) it is not-standard in terms of TV.
In Cinema the standard is 24FPS

0 Former Member over 11 years ago

29 is a nice round number but....
In AVC I can choose 24 but also 23.976.
As for 29 I only can choose 30 or 29.97.
When I look at Wiki I've found that 29.976 is the frame rate of NTSC.
See "Frame rate conversion" on http://en.wikipedia.org/wiki/NTSC
I think some programs can only work with the rounded numbers, and 30 is very close to 29.976.
Modern TV's are more flexible than the old CRT's to sync to the just about standard signals.

0 Former Member over 11 years ago

This is unfortunately a defect in the Mac version of VIRB Edit. We've found that it doesn't affect the syncing of audio/video in most players but it's an error that we plan to fix in the next release.

0 geomonster over 11 years ago

Ok, so VIMEO is right: there is a minor issue with the files. Once that issue is corrected, will we see a change in picture quality or is it something we're not likely to notice?

0 Former Member over 11 years ago

I don't think it would affect picture quality for most players, but depending on how they're implemented, it could, especially in services that parse/convert your videos.

Since videos often only store the change between frames, it could affect picture quality to drop frames of video on export, especially if a player gets out of sync with our video's frame times because it's expecting a more standard FPS in the video.