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julianm78132012
julianm78132012
Participating Frequently
May 16, 2019
Question

panning judder

  • May 16, 2019
  • 11 replies
  • 6633 views

I have read previous threads about the issue of judder on camera pans, and tried out the solutions suggested, but I still have a problem.  In fact I've noticed there's judder on the panning in many commercially-produced films, so this seems to be a long-lasting problem. 

I'm a beginner really with Premiere, so maybe I'm missing something simple - I hope so!  I am trying to produce a video in which slow pans are a central feature, and am getting nowhere.  I am using a Sony 6300a shooting XAVC S HD at 50fps and 50p 50M.  When I play back through the camera I get the smoothest beautiful pans imaginable, but any playback through the computer, either the original file or exporting it through Premiere, gives judder which is completely unacceptable.

I've tried changing the sequence settings as recommended, changing the frame rate to 25 for instance, but nothing helps.  The fastest frame rate available seems to be 60. 

I've also tried exporting it in various codecs, none make a difference.  I imported Apple ProRes as that was recommended to me, but I can't it back even on something like VLC.  (I wonder if there's something wrong, as exporting to ProRes422 HQ gives me a file size for a 19 second clip of over 800KB which is massive.

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11 replies

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David Arbor
Inspiring
May 16, 2019

Is your sequence frame rate 50 fps? Try creating a new sequence based off of your footage to make sure the settings match.

50fps played back at 50 fps should give you a very smooth pan, as long as it's not too fast. Even if it is fast 50fps should give you a smooth pan.

As for judder in films, yes, you will always see if if the pan is too fast, that's the reality of having your playback be 24fps and moving too quickly. It's the film equivalent of banding in a gradient that's 8-bit. There's simply not enough information to make things smooth: https://i.ytimg.com/vi/cGijQgw18e0/hqdefault.jpg

Before you look at your export settings, make sure your Sequence Settings are correct. Please post a screenshot of those back here.

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rodneyb56060189
Legend
May 16, 2019

Dave, you're right with new digital pro sumer cameras when you say this ...

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As for judder in films, yes, you will always see if if the pan is too fast, that's the reality of having your playback be 24fps and moving too quickly.

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But in reality ( if using the word film in the old context of 24 fps plastic 35mm film ) the fast motion creates BLUR, not judder.

Think of movies like LeMans, or Secretariat …. when panning fast with moving object ( race car or horse ) the stuff BLURS that is stationary relative to the moving object you are panning with... it does not judder.

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rodneyb56060189
Legend
May 16, 2019

My Olympus TG-1 ( the point and shoot indestructible camera that can even shoot underwater) judders if I pan even at moderate speed. It is just not able to process the info into SD card ( mov h264 ) fast enough.

However, I accidentally dropped it into a boiling pot of beef stew once, while shooting from above, and after initial panic to get it out fast and run cold water on it in sink, it STILL WORKED !

Unfortunately some beef stew got stuck in the speaker hole so when people talk now and I play back they sound like Donald Duck.

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