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N
ntlMM
Participant
October 13, 2022
Question

PREMIERE RUSH - jitters, pixelated timeline jump

  • October 13, 2022
  • 2 replies
  • 172 views

TECH ERROR ADVICE NEEDED: I shoot and edit my videos on iPhone 12 Pro Max. OS: 15.6.1 using Adobe Rush to edit. Every movie I make I get these weird jitters that just come up outta nowhere. The play head suddenly pixelates the frame to another point in the timeline then comes back again! This ends up in the final exported edit. Is anyone else aware of this issue or whether there is a fix or setting I should implement? Thanks. Mark

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2 replies

Warren Heaton
Community Expert
Warren HeatonCommunity Expert
Community Expert
October 13, 2022

You're getting macro blocking.  The iPhone should shoot at a high enough bit rate such that that doesn't happen, but obviously, it is.  Unfortunately, it's something that H264 and H265 are prone to.

 

Try shooting "Most Compatible" to see if that prevents it.  If so, you could re-shoot the shots that are affected (not ideal, I know).

 

Or...

 

Are you also using the desktop version of Rush as well?  You stand a good chance of salvaging the shots that this is happening with by transcoding the iPhone HEVC (H265) original to ProRes in the macOS Finder (right-click the clip, choose "Encode Selected Video Files", and then pick ProRes when the options dialog box appears).  Then use the resulting ProRes clip in place of the iPhone HEVC original in Premiere Rush.  Sometimes that just reduces the amount of macro blocking rather than eliminating it entirely.  In severe cases, I've managed to save some low-bitrate clips that are not holding up to editing by sending them through After Effects.

N
ntlMMAuthor
Participant
October 13, 2022

Forgot to add: recorded file format from my iPhone is HEVC.

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