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Clips hesitating before entering transitions

My clips are hesitating before they enter into any transition. I have two different camera angles. One is from a Lumix G6 digital camera and the other is from the Garmin Virb. 

This hesitation happens even if I'm transitioning from the same camera to the same camera. If I create a break in the clip the hesitation shows up.

I've taken a short video to show you the hesitation. 

It doesn't matter what transition I try or don't try, the hesitation is always there. It also doesn't seem to matter when in the video I make the cut. Nor does it matter which video I'm going from or to. Both camera angle videos do the same thing.

Please help.

Screenflow version: 7.2

Computer: MacBook Pro 15 Inch, 2.7 GHz, Intel i7 core, 16 GB 2133 MHz LPDDR3, Radeon Pro 460 4096 MB, Intel HD Graphics 530 1536 MB

Video Quality: Lumix G6 - 1920x1080, Garmin Virb 1920x1080

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 yrs ago
    • Reported - view

    Thanks for those details and the example. That's exactly the information I need.
    Some H.264 .mp4 files can be difficult to decode in real time and that may be even more difficult with multiple mp4 and m4a files playing at the same time. This is especially so with some camera created files.

    Try to export. Often the issue is just real time playback. The exported file may be fine.

    Playback can improve if you transcode to Pro Res before importing as per these instructions.

    Do report the issue using the form below since we are trying to improve playback and you have a good detailed example. Include a link to the video and your description. Thanks for documenting this well.

    ScreenFlow Support Form

    Like
  • I'd be happy to report the issue.

    Exporting worked, so it looks to be a playback issue. Here is a short segment of the working export with the smooth transitions as expected.  

    https://youtu.be/GdxWjAeFeFU

    I think the export feature is hit or miss on the smoothness of the transitions but I don't have any conclusive evidence at this time (only what I vaguely remember from before). However, for this project the export works exactly as designed.

    THANK YOU!

    And here is a side by side video of the original files vs the transcoded files for real time playback. The transcoded files are the second ones and they show smooth real time playback during transitions. While it works, it is a workaround and not ideal for the long term. 

    https://youtu.be/iHq2NWLrSnM

    Again, thank you for your help. 

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 yrs ago
    • Reported - view

    Bobbie Lind Thanks for that. Yes transcoding is certainly a workaround which takes time and ProRes files take up more drive space. Your recent MBP is quit capable. Some camera recorded files are harder to playback than others so we can examine improving that. 

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  • Ok. After submitting a ticket to support they asked me to do the following -- and it worked!

    The told me to do the following:

    Part 1:

    Delete ScreenFlow Cache:
    1) Make sure ScreenFlow is not open. (save any work in progress)
    2) Open a new Finder window.
    3) Select the "GO" menu top of screen, Hold "Option" key with menu open, and select the "Library" that appears.
    4) In the Library folder open Caches folder.
    5) Delete ALL folders that start with “net.telestream.screenflow(4/5/6/7)”
    6) Empty trash.

    Part 2:

    Reset ScreenFlow Preferences:
    1) Make sure ScreenFlow is not open.
    2) Open Terminal and copy and paste this command and press Enter:To open "Terminal" (Finder > Applications > Utilities > Terminal).
    defaults delete net.telestream.screenflow7

    Restart your machine, open the project and see if the playback is smooth or if it still displays the hesitation.

    This worked for me. Hopefully it helps anyone else having this issue too.

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 4 yrs ago
    • Reported - view

    Bobbie Lind Thanks for posting that solution.

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  • Craig,

    I'm having this issue with Version 8.2.3 (31394), using some of the stock footage available through my ScreenFlow licensing.  I followed all of Bobbie Lind's steps above (substituting "8" for "7" in the Terminal command), and the issue persists.  The hesitation doesn't appear to exist in the rendered export, but this makes it impossible to know if the edits are clean without rendering and reviewing.  Is there a fix in the works for this?  Thanks - 

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view

    Lee Cunningham Can you please provide a recording showing what you mean by "hesitation" as the original poster did. The types of stock media and your computer's specs may be a factor so you may want to include those details.

    Like
  • CraigS See attached.  I'm getting the hesitation when the clips touch or are overlapped using a cross dissolve transition.  The clips I used here are from the stock subscription: Moving Through Stars in Space and Into the Void - Journey Through Space.  (I don't see a way to ascertain the properties of those clips.)

    My laptop config and Screenflow version are included in the demo video.  The document settings are 1080p HD at 24fps.  I also tried it at 30fps, and got the same hesitation.

    Let me know if I can provide any additional information.  Thanks.

    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view

    Lee Cunningham Thanks for that. What are specs on your laptop?
    What happens when you export the timeline (this will determine if it's only a playback issue)?

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  • CraigS The hesitation is not there in the exported mp4.  Here are the specs:

     

      Model Name: MacBook Pro

      Model Identifier: MacBookPro12,1

      Processor Name: Intel Core i5

      Processor Speed: 2.7 GHz

      Number of Processors: 1

      Total Number of Cores: 2

      L2 Cache (per Core): 256 KB

      L3 Cache: 3 MB

      Memory: 8 GB

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view
    Lee Cunningham said:
    The hesitation is not there in the exported mp4.

     So that would seem to indicate the computer may be struggling with playback specifically. Let's confirm that.

    Create a New User admin account.
    Log into the new account and open the project and test there.

    Also what is your total system drive capacity?
    How much free space is left?
    What is the duration of the project?

    Lack of drive space may also cause this issue. System drives especially should always have at least 20% free space.

    Like
  • CraigS Still getting the same hesitation with that project when logged into the new administrator account.  Project duration is 00:01:36.21.  Remaining SSD capacity = 107GB out of 250GB = 42.8%.

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view

    Lee Cunningham Thanks for testing and the additional information. One more test. Can you create a new document with just the two clips where the cut is creating the hesitation and see if it still happens? This will confirm that it's not related to the document.

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  • CraigS Using a brand new document, with just those 2 clips in the document, the transition works without hesitation during playback in the timeline editor.  So it looks like it just may be something with that document. 

    I'm also unable to Save As with that original document -- maybe another indicator.  If so, do we just chalk this up to "one of those things" (corruption, bad references, etc.)?

    I'm going to recreate the entirety of the original document in the new document, and see what results...

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view
    Lee Cunningham said:
    I'm going to recreate the entirety of the original document in the new document, and see what results...

     That could be important because if the issue reappears it might another source or scenario that is the cause. 

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    • Armin
    • Armin
    • 3 yrs ago
    • Reported - view

    I do have the same problems, when I try to create a transition between two mp4 videos.. I've tried to create a new document and stuff like that, but nothing helps.
    If I export the video, everything works like desired..

    Are there any suggestions to get rid of these kind of problems?

     

    Thanks in advance!

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view

    Armin The .mp4 files may be difficult to decode (playback in real-time with transition) on your system. It depends on the specs of your Mac as well as the codec, structure and frame size of the files you are using.

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    • Armin
    • Armin
    • 3 yrs ago
    • Reported - view

    Thanks for your response!
    Would it be better if I convert the mp4-files into another format? If yes, which format would you recommend?
    Thanks for your help!

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    • CraigSModerator
    • Telestream Desktop Forum Moderator
    • CraigS
    • 3 yrs ago
    • Reported - view

    Armin convert to Apple ProRes. You can do that in Finder .
     

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