FORUMS: list search recent posts

Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7

COW Forums : Apple Final Cut Pro Legacy

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Matthew Taylor
Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 10:02:38 pm

I have just shot a promo in 60fps 720p on my Canon 60D, as the client has footage that is in 30 fps. The 60 fps H264 rushes have been converted to Pro Res, again at 60fps, This has then been Batch Conformed using Cinema Tools down to 30 fps 720p.

These clips play back in beautiful smooth slow mo in Quicktime player, however when I import into a 1280x720 30fps Pro Res sequence in FCP 7, the footage in the viewer and on the timeline, stutters on playback, like a very slight shake.

Anyone encountered this problem or can tell me where I am going wrong?

Thanks in Advance

Matt Taylor


Return to posts index

Matthew Taylor
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 10:09:18 pm

I have noticed that the original H264 rushes are at 59.94fps, I have converted all to 60. Could this be the culprit?

Still doesn't explain why they play fine in Quicktime Player

Matt


Return to posts index

Dave LaRonde
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 11:22:26 pm

There seems to be a little frame rate confusion. Let's clear that up first. What frame rate are you required to deliver: 30 or 29.97?

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index


Michael Gissing
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 11:25:36 pm

Cinema Tools destructively changes the file so never do this to camera originals. Always to a copy AFTER converting to an edit codec like ProRes.


Return to posts index

Matthew Taylor
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 11:44:02 pm

I need to deliver in 30fps, shot with my Canon 60D on NTSC settings, at 1280x720 60Fps assuming it would be 60fps. The Raw H264 is 59.94 fps in the QT Movie Inspector. I have converted these to 60fps Pro Res with MPEG Streamclip.

I have then duplicated these files as I know Cinema Tools is destructive and used batch conform to 30fps in Cinema Tools.

The now 30fps slow motion Pro Res files playback flawlessly in QT Player, but stutter in FCP. I have just done a test output via Compressor, and the QT playback doesn't seem to skip.

The problem only seems to be in FCP

Does this help diagnose the problem?

Thanks in advance for any responses


Return to posts index

Shane Ross
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 21, 2013 at 11:58:17 pm

This certainly does help.

You shouldn't be dealing with straight up frame rates like 30fps, 60fps. TV airs at 29.97fps...has since color was introduced. So cameras shoot 29.97fps for NTSC. 720p60 is also not 60fps straight...it's 59.94. Your camera shot that format, and for some reason you thought it was wrong. No, that's right. 720p runs at 59.94fps.

So you need to go back and not convert to 60fps straight up, and not work 30fps straight up. 59.94...29.97. That's what you need to focus on.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


Return to posts index


Matthew Taylor
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 22, 2013 at 12:16:13 am

Thanks, that was what I figured, thanks for your help. But I can't seem to find a 29.97fps 720p Pro Res project preset in FCP 7.

Any help with that?


Return to posts index

Shane Ross
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 22, 2013 at 12:47:14 am

Yeah...it's non standard, so you'll have to duplicate a setting, and make it. OR...convert a clip to that format, and then just add it to a new sequence. FCP will make the sequence match the clip.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


Return to posts index

Matthew Taylor
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 22, 2013 at 12:48:34 am

That's great, thank you

Matt Taylor


Return to posts index


Matthew Taylor
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 22, 2013 at 3:21:25 pm

Hello Again

I have done a test on my footage, converted the 59.94fps H264, to 59.94fps Pro Res 720p. Then converted that to 29.97fps, via cinema tools. This has then been imported onto a 29.97fps editing timebase sequence in FCP, and I am still getting the same stuttering issue.

I am totally lost on this one, anyone have any advice?

Regards

Matt Taylor


Return to posts index

Dave LaRonde
Re: Stutter On 60fps Footage Converted To 30fps Footage - Cinema Tools / 60D / 720P / FCP 7
on Aug 23, 2013 at 3:01:45 pm

"Stuttering" is a pretty nebulous term. Can you elaborate on what you see when you hit play?

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]