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R
René5EDD
Inspiring
March 4, 2021
Answered

Premiere Pro Lag/delay

  • March 4, 2021
  • 4 replies
  • 8702 views

Hi everybody,

 

Recently, I bought a new macbook pro (m1-chip) (8GB) (256GB SSD), and for some reason I suddenly got lag/delay issues when editing.

 

Situation

The problem doesn't arise when using the .mov Quicktime screenrecording files, but when I convert it to a .mp4 file and then import it into the project. However, I need to convert the .mov file or else it will look pixely or lag (did not happen on my macbook air (2014) though). 

 

Problem

When I press start/stop there is a couple seconds lag or delay (see halfway screen recording). 

 

Tried

-Handbrake (constant frame rate)

-GPU

-Memory 

-Reduce quality

-Many other things...

 

Can someone help me out? Thanks in advance!

 

Kr René

This topic has been closed for replies.
Correct answer René5EDD

I finally found the solution to this problem! Check out this video, it's exactly the problem and solution!

 

https://www.youtube.com/watch?v=mhBUnxtuw4Y

 

4 replies

R
René5EDDAuthorCorrect answer
Inspiring
March 16, 2021

I finally found the solution to this problem! Check out this video, it's exactly the problem and solution!

 

https://www.youtube.com/watch?v=mhBUnxtuw4Y

 

    Jeff Bellune
    Jeff Bellune
    Legend
    March 16, 2021

    Excellent find!

    Pr on my MacBook Pro doesn't have the H.264/HEVC settings at all, and nothing for hardware encoding. Here's what my media prefs look like:

     

    I'm sorry I couldn't give you better help. I never would have arrived at that solution, or even known to troubleshoot it. 😀

    R
    René5EDDAuthor
    Inspiring
    March 16, 2021

    Hi Jeff, no worries 🙂 My settings look the same. I only have to disable "Enable hardwater accelerated decoding" tostop the delay.

    Jeff Bugbee
    Community Expert
    Jeff BugbeeCommunity Expert
    Community Expert
    March 8, 2021

    Under your program monitor wrench icon, can you try unchecking High Quality Playback and see if that helps?

     

    R
    René5EDDAuthor
    Inspiring
    March 8, 2021

    Thanks for your suggestion, but this one was already unchecked

    Jeff Bellune
    Jeff Bellune
    Legend
    March 4, 2021

    Does this happen in any other projects?

    It might be best to find out a way to avoid converting the .mov files.

    • What codec does your screen recording program wrap in those .mov files? Use the free MediaInfo to examine them.
    • Also check for frame size, frame rate, etc.
    • Make sure your pr sequence matches the properties of the screen recording .mov files.
      R
      René5EDDAuthor
      Inspiring
      March 5, 2021

      Hi Jeff,

       

      Thanks for your reply! 

      • I've got no technical and tag data expertise. I don't have any idea what codec means, nor do I know what to do with the outcome. 
      • The .mp4 file is 30fps > sequence settings 29,97fps. Frame size: 1920 / 1080 (always have been). I've set the display format on: 29,79fps non-drop-frame timecode, and preview file format: I-frame Only MPEG. 
      • Do I need to download MediaInfo to check the properties of the screen recording.mov files?

      Kr René

      R
      René5EDDAuthor
      Inspiring
      March 8, 2021

      I tried to email a reply earlier but was not successful. It may show up later.

       

      I was able to duplicate your lag & delay on my 2019 16" MacBook Pro using Quicktime Player as the screen recording software. I was also able to solve the problem with free tools.

       

      • The screen recording produced by QT Player is variable frame rate (VFR). That's why it stuttters and lags in Pr.
      • Converting the recording to constant frame rate (CFR) in Handbrake produces an mp4 file that plays and edits beautifully in Pr.
      • The disconnect is probably the encoding settings in Handbrake. Let's work through those:
        • I set the dimensions to something usable for screen or web viewing: 1920x1080, or Full HD.
        • Then I turned off all the Filters:
        • Then I set the video parameters as follows. I kept the original 59.94fps frame rate:
        • This is what the summary looked like before I started the conversion:

      I hope you find these settings useful. Cheers!


      Hi Jeff, 

       

      Thanks for the reply and information. 

       

      "The screen recording produced by QT Player is variable frame rate (VFR). That's why it stuttters and lags in Pr." I'm now 100% sure it has to do with the frames/second. When I create a new project and import the screenrecording, the sequence settings are automatically set 58,14fps instead of my previous default settings of (29,97) and I see no lag, just in de beginning (2nd second) the mouse freezes (and doubles), just like in the 10 second video. So, this might work out. Tomorrow, I'll check if my video files with 29,97fps work together with the screenrecording. By the way, those visuals you posted, is that MediaInfo? I don't see the menu (dimensions, filters, summary etc). 

       

      Thanks again, and keep you posted. 

       

      Kind regards, 

       

      René

       

       

       

      R
      René5EDDAuthor
      Inspiring
      March 4, 2021

      I've added another screen recording to make it more clear (still not the worse example).

       

      Even clicking the play button causes lag/freeze. 

       

      Also Tried

      -Proxies

      -Render in & out

      -Media Cache

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