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M
marshalls80180313
Known Participant
March 27, 2020
Question

Random bright frames / flicker in mp4 after export. PE 2018.

  • March 27, 2020
  • 1 reply
  • 1321 views

When watching an mp4 video created by PE 2018, every once in a while there is a slight flicker, i.e. one single frame randomly has a higher luminance than the others.  These "flashing" glitches are never present in the preview, only in the mp4 after export.  They are definitely not present in the original files and seem to appear in different places even without making any changes to the timeline.  I've experimented with different settings (turning maximum bit depth, hardware acceleration, etc... on/off) but different settings only lead to the glitch appearing in different locations.

 

Has anyone else experienced this?  Please help.  This is EXTREMELY annoying for a perfectionist like me.  I want a clean professional looking output.  These random flickers ruin it for me.

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1 reply

S
Steve Grisetti
Legend
March 27, 2020

What device recorded your original video?

 

Open a sample of your raw footage in the free download MediaInfo. In MediaInfo, set View to Text and then copy the text of its report and paste it to this forum. We need to determine if the issue is in your source footage specs.

 

Also, what software are you playing your finished MP4 on? Try VLC Media Player. It's free and it has none of the limitations of say Windows Media Player or Quicktime.

M
marshalls80180313Author
Known Participant
March 27, 2020

Update:  After some investigation it seems like the overall size of the project is leading to these problems.    The project is about 15 minutes long and references about 33 GB worth of source data.  If I render only a short section the problem doesn't appear.  I will try cutting the video in half where there is a fade-to-black around 9 minutes.

 

The problem then is I will have to re-encode when I put the parts back together.  Unless there is a way to join without re-incoding somehow with ffmpeg.  

M
marshalls80180313Author
Known Participant
March 30, 2020

Is there anyone else who can help me or is this a lost cause?  Maybe I'd get more help posting in the "pro" section as there's more advanced users there.  I just can't afford $20 a month so I'm using elements.

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