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Question

Crosshatching in program monitor after render

Forum|Forum|7 years ago
December 6, 2018
3 replies
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Hello!

I am editing on an iMac (macOS Mojave Version 10.14.1) using Adobe Premiere Pro CC 13.0.1.

I have 4K footage shot on a GoPro Hero 7 and 1080 footage shot on a Canon T7i. Both were shot at the same frame rate: 29.97.

When I started Premiere, I decided I'd create a 1080-based sequence, which would therefore downscale the 4K footage. I did this by dragging and dropping my 1080 clip into the timeline area to establish a timeline. My sequence settings are shown below. I also did File / Preferences / Media / Default Media Scale --> Set to frame size. I did this so when my 4K footage is dropped onto this sequence, it will be set accordingly.

OK. Now everything seems fine and dandy. I mix and match 1080 and 4K clips on this timeline. No effects added. Everything looks crisp in my program window ... UNTIL ... I render. I have included two photos below: one pre-render and one post-render. This particular shot you see is from a 4K video. Why would rendering create the pixelation/crosshatching I am seeing in my program monitor? This is occurring on all of my 4K video in the sequence. The raw 4K files are crisp, as what I'm seeing in the Source Monitor. How do I fix what I'm seeing in the Program monitor?

I really appreciate any feedback you can offer! I have searched the internet for hours and can not seem to come up with a solution!

SEQUENCE SETTINGS:

PRE-RENDER:

POST RENDER:

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Ann Bens

Community Expert

Ann Bens: I know this might sound silly, but how do I know if I have a dedicated GPU card?

If you did not you would not be editing gopro and dslr footage.

That is correct no need to pre render. just lower your preview resolution. Your machine is not that great. and set render to Performance. (memory is only for high end machines).

Might also want to lower your profile and level a bit.

Your preview files are made with a not so great preview codec.

Do you have cross hatching in the output file?

keitho25161172Author

Participating Frequently

Ann Bens: Thanks for clarifying!

1. When you say "lower your preview resolution," do you just mean setting my program monitor to 1/4 or 1/2 instead of full? Or is there another place I should be making that adjustment?

2. You mentioned my preview files are made with a not-so-great codec. Is this something I can change?

3. The cross hatching is visible in the output file.

4. I will attempt to lower the profile and the level a bit. (I am at work at the moment, but will return this evening to provide you with an update on this.)

Ann Bens

Community Expert

1. yes

2. no need as you dont use preview files for export (its just preview, all that matters is the end file)

3. Is this only the gopro footage? Gopro is heavily compressed.

Mike Dziennik

Community Expert

Check the Maximum Render Quality checkbox - this will improve scaling.

Ann Bens

Community Expert

If one has a dedicated gpu card it is best not to check MRQ.

Post screenshot of export settings.

Why are you rendering your timeline, you have no effects applied or does your machine cannot handle 4K

Post specs of your computer and Pr build.

btw I dont see any cross hatching.

keitho25161172Author

Participating Frequently

Ann Bens: I know this might sound silly, but how do I know if I have a dedicated GPU card? I have included a few screen grabs below, including computer specs, export settings and a closer shot of the crosshatching/blotchiness I am experiencing.

1. My editing set up: I have two G-Raid hard drives. The content is stored on the 4TB hard drive and the project (along with the autosave, audio previews, captured video and video previews folders) is stored on the 500GB hard drive.

2. Export settings: I am exporting for YouTube. Based on other recommendations, I set my preset to "YouTube 2160p 4K Ultra HD" even though my timeline is in 1080. I then adjust the settings under "Basic Video Settings" to 1920x1080. I was having a problem with bit rate on several other videos I posted to YouTube and this adjustment has helped correct that. Here's what my export screen currently looks like:

3. To be completely honest, I render my timeline prior to export just out of habit. I like seeing that green bar, although intuitively I know it's not necessary. It may be important to note that my playback does stutter a bit on 4K video when that render bar is yellow.

4. I have included some of the specs you asked for below. Please let me know if there is anything else I can provide: