Enormous Compression Artifacts Issue with Screencasts/Screenrecordings

Dec 17, 2020

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Hi,

 

I am exporting a screen recording file and I am getting compression artifacts and duplicate mouse cursors all over the place, sometimes lasting for seconds, mainly when moving around windows (see along sides of the window borders):

 

Screenshot 2020-12-17 at 23.00.58.png

I'm using these settings:

 

christophb_0-1608217591280.png

 

Any idea how this can be resolved? I could try various options but it takes quite long to export so this could potentially take a whole day to figure out 🙂 

 

Thanks, best regards,

Christoph

Adobe Community Professional
Correct answer by mgrenadier | Adobe Community Professional

screen recordings are often variable frame rate which can cause issues in Premiere.  use mediainfo to determine whether your source is variable or constant frame rate
https://mediaarea.net/en/MediaInfo/Download
if it's variable use handbrake to convert to constant frame rate
https://handbrake.fr
and here's a tutorial on how to use handbrake
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

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Error or problem, Export

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Enormous Compression Artifacts Issue with Screencasts/Screenrecordings

Dec 17, 2020

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Hi,

 

I am exporting a screen recording file and I am getting compression artifacts and duplicate mouse cursors all over the place, sometimes lasting for seconds, mainly when moving around windows (see along sides of the window borders):

 

Screenshot 2020-12-17 at 23.00.58.png

I'm using these settings:

 

christophb_0-1608217591280.png

 

Any idea how this can be resolved? I could try various options but it takes quite long to export so this could potentially take a whole day to figure out 🙂 

 

Thanks, best regards,

Christoph

Adobe Community Professional
Correct answer by mgrenadier | Adobe Community Professional

screen recordings are often variable frame rate which can cause issues in Premiere.  use mediainfo to determine whether your source is variable or constant frame rate
https://mediaarea.net/en/MediaInfo/Download
if it's variable use handbrake to convert to constant frame rate
https://handbrake.fr
and here's a tutorial on how to use handbrake
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

TOPICS
Error or problem, Export

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51

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Dec 17, 2020 0
Contributor ,
Dec 17, 2020

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Have you used a clip speedup/slowdown via optical flow? I so try 'frame sampling' instead

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Dec 17, 2020 1
Dec 17, 2020

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Thank you for your idea, @basil1891 ! I have used speedup but in different places (not where the artifacts are). Also it seems I have used Frame Sampling, so that couldn't be it. Also the original footage doesn't have any artifacts but it's admittedly quite big (it's a full screen 13 inch retina screen recording). 

 

What else could it be?

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Contributor ,
Dec 17, 2020

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for troubleshooting I'd run a copy of the project but downscaled to standard 1920x1080, then selected the trouble part of the timeline and exported it in some intermediate codec, like Prores/Cineform/DNxHD. That way you can check two potentional causes: non-std resolution and h264 codec, and in reasonable time.

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Dec 17, 2020 1
Dec 17, 2020

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Thanks, I will try that.

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Dec 17, 2020 0
Adobe Community Professional ,
Dec 17, 2020

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screen recordings are often variable frame rate which can cause issues in Premiere.  use mediainfo to determine whether your source is variable or constant frame rate
https://mediaarea.net/en/MediaInfo/Download
if it's variable use handbrake to convert to constant frame rate
https://handbrake.fr
and here's a tutorial on how to use handbrake
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

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Dec 17, 2020 1
Dec 17, 2020

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Thanks, I'll have a look. I recorded it with Quicktime. Do you happen to know if Adobe are going to fix those issues?

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Dec 17, 2020 0
Dec 20, 2020

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That seems to have fixed it, thanks so much @mgrenadier - further more it has reduced my source screencast from ~850mb down to ~30mb without noticeable loss of quality :party_popper::party_popper:

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