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FCP stuttering H.264 clip

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Steve Cornell
FCP stuttering H.264 clip
on Mar 22, 2011 at 9:42:37 pm

Canon 7D clip is stuttering in the FCP viewer.

I've transcoded the clip to ProRes 422. The clip was shot at 1080 with a shutter speed of 125. When I play the RAW CLIP in quicktime, there is no stuttering. Additionally, when I play the captured clip in quicktime player, its smooth with no stuttering.

As soon as I load the clip in the viewer or drop it into a timeline, BOOM, stuttering.

I've also opened the transcoded clip in Cinema Tools and it plays perfectly.

Sequence settings: 1920x1080 29.97fps Apple ProRes 4444 Pixel Aspect: Square Field Dominance: None

Clips Settings: 1920x1080 29.97 Apple ProRes 4444


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Chris Tompkins
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 9:51:54 pm

What drive are you playing your media off of?

Chris Tompkins
Video Atlanta LLC


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Steve Cornell
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:00:15 pm

Hi Chris,

Its an internal drive. Here's where it gets stranger. My wife is on the same setup as mine and the same raw clip transcoded by her machine, plays smooth in FCP viewer and canvas. I copied her sequence settings tab for tab.


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Steve Cornell
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:12:13 pm

I think its a playback setting. I took the stuttering clip and exporting to a quicktime movie (make movie self contained).

I then opened the exported .mov clip in the FCP viewer and it stutters. BUT....If I open the exported clip in quicktime, its SMOOTH.


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Rob Grauert
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 9:52:40 pm

ProRes4444?

That codec requires more bandwidth, 330Mbps I believe. What is your media stored on? A firewire hard drive might not cut it, although, I never worked with ProRes4444, so I can't say for sure.

Rob Grauert, Jr.
http://www.robgrauert.com
command-r.tumblr.com


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Chris Tompkins
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:13:08 pm

You shouldn't edit with media on your internal (OS) drive.
Your results will vary.

Chris Tompkins
Video Atlanta LLC


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Rafael Amador
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:21:59 pm

To transcode H264, Prores 444 makes no sense.
rafael

http://www.nagavideo.com


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Frank Giardina
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:27:26 pm

Shouldn't the frame rate be 60?

Frank Giardina
17 Video Production


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Frank Giardina
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:45:26 pm

Sorry... I meant the shutter at twice the frame rate, so 60.

Frank Giardina
17 Video Production


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Steve Cornell
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:54:56 pm

Nope. shutter can be anything above 2x the frame rate. the most important proof is that the clip plays smoothly on my wife's machine.


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Steve Cornell
Re: FCP stuttering H.264 clip
on Mar 22, 2011 at 10:55:55 pm

Problem solved. Thanks to everyone for taking the time to help.


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stefan meier
Re: FCP stuttering H.264 clip
on Mar 23, 2011 at 1:11:49 am

how did u solve the problem??

greetings


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Shannon Carpenter
Re: FCP stuttering H.264 clip
on Apr 11, 2011 at 2:11:29 am

Hi Steve, I'm struggling with the same. Care to share what the fix was that you found?

Thanks.


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Steve Cornell
Re: FCP stuttering H.264 clip
on Apr 11, 2011 at 2:55:22 pm

Hi Shannon,
In the timeline, there's a drop-down menu. Make sure "Playback frame rate is set to FULL". I occasionally set my playback to half b/c I don't like to lose time rendering clips with lot of effects on them. If I can go an entire session without rendering, I"m happy.


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Shannon Carpenter
Re: FCP stuttering H.264 clip
on Apr 12, 2011 at 2:35:41 am

Thanks, Steve.

Darn it anyway, I'm still getting stuttering clips. I've tried all the advice I've found so far on converting footage from H.264 to FCP 7.0.3 and it is still not working. I'm feeling more than frustrated at this point. :(

I don't understand why this should be SUCH an issue. I've worked with FCP for years, but this is my first DSLR/vid experience.


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Gary Askham
Re: FCP stuttering H.264 clip
on Mar 23, 2011 at 1:20:38 am

But as Rafael says - why did you transcode the clip to ProRes 4444? That's a hide-end finishing codec for film mastering or graphics work. You are going to need pretty fast drives for no gain whatsoever other than pain and heartache.

ProRes 422 is more than enough - not even the HQ variation is necessary for the camera you shot on.

------------------------
FCP and Avid Technical Support
Air Post Production
Shoreditch - London


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