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dchue_upshot
Participating Frequently
January 10, 2017
Answered

Frame "split" glitch only after export

  • January 10, 2017
  • 2 replies
  • 1653 views

Seemingly every other time I export a version of this video, there is one single frame at some point throughout that "splits" as seen below. It does NOT appear when watching a rendered preview in Premiere (CC 2015.4, just upgraded). Only after rendering. Very frustrating. Any idea why this is and how I can avoid it on export? First time posting, so please let me know if you want further details. I provided a bunch below. Thank you!

Computer specs:

Late 2013 iMac 27"

3.5GHz quad-core Intel Core i7 processor

8GB Memory

1TB storage

NVIDIA GeForce GTX 775M graphics processor with 2GB of GDDR5 memory

Footage specs:

Type: MPEG Movie

File Size: 3.97 GB

Image Size: 1920 x 1080

Frame Rate: 23.976

Source Audio Format: 48000 Hz - 16 bit - Stereo

Project Audio Format: 48000 Hz - 32 bit floating point - Stereo

Total Duration: 00:06:25:00

Pixel Aspect Ratio: 1.0

Export specs:

Type: QuickTime Movie

File Size: 1.52 GB

Image Size: 1920 x 1080

Frame Rate: 29.97

Source Audio Format: 48000 Hz - 16 bit - Stereo

Project Audio Format: 48000 Hz - 32 bit floating point - Stereo

Total Duration: 00;00;59;22

Pixel Aspect Ratio: 1.0

Video data block #1:

Frame Size = 1920 x 1080

Compressor = Apple ProRes 422 (HQ)

Quality = Most (5.00)

(specs from VLC: )

This topic has been closed for replies.
Correct answer Jeff Bellune

The frame isn't really "split"; what you're seeing is 2 different half frames, each half from a different point in time.

I suspect it has to do with your frame rate change from 23.976 to 29.97.  Unless you have a specific need to deliver 29.97 fps video, try exporting at the same frame rate as your source material -- 23.976 fps.  Hopefully that will make the problem go away.

Cheers,

Jeff

PS -- thanks for the screenshot and the footage/export info.  It helps the troubleshooting procedure.

2 replies

D
dchue_upshotAuthor
Participating Frequently
January 12, 2017

This makes sense. I figured the frames would be interpolated to accommodate the increased frame rate, and the audio stayed in sync so the render never seemed off to me. But I'll definitely keep this in mind next render. Thanks!

Jeff Bellune
Jeff BelluneCorrect answer
Legend
January 11, 2017

The frame isn't really "split"; what you're seeing is 2 different half frames, each half from a different point in time.

I suspect it has to do with your frame rate change from 23.976 to 29.97.  Unless you have a specific need to deliver 29.97 fps video, try exporting at the same frame rate as your source material -- 23.976 fps.  Hopefully that will make the problem go away.

Cheers,

Jeff

PS -- thanks for the screenshot and the footage/export info.  It helps the troubleshooting procedure.

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