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edwardh17844748
Participant
April 15, 2019
Question

Pixelated frames in PP.

  • April 15, 2019
  • 1 reply
  • 334 views

Hi guys,

Im really hoping someone can help me here - I'm a professional videographer and Ive lost about 2 days trying to sort this issue, to no avail, and have work seriously starting to back up now.

On my most recent project, when exporting it I'm getting pixelated frames thrown in between perfectly good frames. For example -

Now granted this is a very busy scene with lots of movement and grain in the footage. But image one has lovely clean lines, lovely grain over and is how it should looks. Image two, if you compare the bottom left of the screen (the rear of the persons head), become blocked/pixelated and is far less defined. These frames are right next to each other in the sequence.

Ive tried adjusting every parameter I can think of. My source footage is 1080 50fps .mov. Exporting to 25fps, but this shot in question is slowed by 50% in post anyway. My current export settings -

The only difference between my last project export and this one is that my iMac rather unhelpfully installed some update to the graphics driver, which then meant NVIDIA needed to install an update followed by a CUDA update. ive checked my previously project and I didn't get any of this pixelation or artifacts being introduced. Ive tried to see if I can rollback the drivers but have no idea how on an iMac (I don't have time machine, annoyingly).

Im editing on PP 17.1.2 - Mas OS X Sierra 10.12.6

If I could get back to the same drivers I was on last week I think it'd be fine - the previous project was shot on the same camera, same settings and same export settings.

Why oh why do these companies have to push these crappy updates on us!!

Any help you can provide would be much appreciated!

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1 reply

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edwardh17844748Author
Participant
April 15, 2019

So after a few more frustrating hours...

I have managed to pretty much iron the issue out by adjusting it for CBR and setting it to the highest option (62) - obviously not workable in the real world as the final file size would be massive and unusable. I set it to the extreme to play devils advocate.

Im guessing because so much is going on in the frame - movement, light, reflections, that either by setting the lower bit rate or setting it to VBR, PP is over simplifying the frame and creating solid blocks of colour which then appear as a pixilated image?

Does anyone know the best setting for such a busy image - CBR/VBR or the bitrate setting to achieve a good image?

Strange that ive not had such an issue before - but then again this is an exceptional busy frame I guess. Hoping its not the drivers after all, as there seems to be no way to revert to the previous ones on iMacs. Cheers apple...

Averdahl
Community Expert
AverdahlCommunity Expert
Community Expert
April 15, 2019

Does anyone know the best setting for such a busy image - CBR/VBR or the bitrate setting to achieve a good image?

The H.264 encoder in Premiere Pro tends to fall apart fast when there is much detail and motion in the footage.

Personally i use TMPGEnc Movie Plug-in AVC for Premiere Pro to export high quality x.264 directly from the timeline in Premiere Pro and it outperforms the naitive H.264/H.264 Blu-ray encoder in Premiere Pro.

Download and try it, 30 days, no limitations, no watermarks.

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edwardh17844748Author
Participant
April 15, 2019

That looks like a Windows only program?

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