@Timothy-Dhalleine I thought that drone shot hevc. I get the best quality rendering hevc with the Magix Hevc/MainConcept encoder selecting the 10-bit option using cbr with a rate that is the closest match to the bitrate of the footage.

There might also be level mismatches between what you see before and after rendering. Suggest you do a render and display it in a viewer sized to match and positioned along side your Vegas preview screen to verify that imaging looks the same. Your screen shots have allot of low-level material which might be undergoing a range remap somewhere and causing pixelation in a mismatched render. If you need a limited-range render of a Vegas full-range project for YouTube compatibility, make sure your external viewer is set to do a limited-2-full range view transform. Otherwise render full-range projects to full-range in the render preset under the project tab.

@Timothy-Dhalleine Hi,you wrote this in one of your previous posts -

Labtop : ASUS ROG Zephyrus G14

AMD Ryzen 9 6900HS with Radeon Graphics | 3.30 GHz

RAM : 16,0 GB

Windows 11.

Vegas Pro 20

Can you click your icon at the top of this page - My Profile & fill in your Signature with this info, it will then always show at the bottom of your comments,

You also posted MediaInfo of a previous file so you have that app. can you share the info of this file.

@Timothy-Dhalleine I get the best quality rendering hevc with the Magix Hevc/MainConcept encoder selecting the 10-bit option using cbr with a rate that is the closest match to the bitrate of the footage.

The best way to waste bitrates....but sure it will give you best quality...but probably also issues with delivery...

Most of what I do is for upload to YouTube these days and no issues there. The hevc format is inherently more compact than avc even though it prefers cbr. If delivering for further editing, ProRes is usually preferred by colorists with low powered gpus but that needs substantially higher bitrates.

...however, after rendering some of these clips pixelate.

Unless this happens every time you play them in exactly the same spot for the same duration, the solution is entirely between your system, your player, and whatever else might be going on like background processes, network / internet traffic, and multitasking.

2160p at 60 fps can be a bit taxing for many viewers for the same reasons, and the modest computer systems the vast majority of viewers will have. 1080 p30 is about the norm for 80% of consumers.

You may have better luck rendering to x265 in Voukoder or Handbrake, especially if you keep the compression modest.

If you would like independent confirmation of the integrity of your render, feel free to upload a short, actual render to Drive or Dropbox (not the forum or Youtube!), and post the link here.

What build of VP 21 are you using and does it happen with all of them? I find some decoding issues with 300 and newer that can show up on renders. At the moment I'm staying on build 208. Final renders are usually x264 with Voukoder.

Try to keep Radeon Graphics updated, there are issues with some driver versions.

Hey everyone,

Huge SORRY for the delay in replying (I spend most of my days in the mountains) and thanks for all the useful info. I use Vegas 21.0 Build 315. Same issue happened before on Vegas 20.0.

Thanks to your comments I could confirm this was a rendering issue. The problem disappears as I render on MAGIX HEVC/AAC MP4 (Internet UHD 2160p 59.94fps (Intel QSV). Rendering to x265 in Voukoder is also a solution!

The problem almost always happens using detailed footage and rendering as MAGIX AVC/AAC MP4 (Internet UHD 2160p 59.94fps) so it seems this rendering option should be avoided for detailed footage.

The problem almost always happens using detailed footage and rendering as MAGIX AVC/AAC MP4 (Internet UHD 2160p 59.94fps) so it seems this rendering option should be avoided for detailed footage.

 

Glad that you could confirm also my findings about the quality of Magix renders. When you're really critical you will see also quality degradation in HEVC renders. I use only Voukoder X265 rendering with NVENC support for quality renders, which renders also much faster.

This case reminds me of something.

I've noticed this problem before as well. I used Luts and every time there were artifacts in dark scenes.

Solution for me:

Every time I start rendering, I switch the project to 32bit (video Levels)

Let me know if this helped you.

I would say that the old Sony AVC or Voukoder is much better quality than the Magix AVC.

This case reminds me of something.

I've noticed this problem before as well. I used Luts and every time there were artifacts in dark scenes.

Solution for me:

Every time I start rendering, I switch the project to 32bit (video Levels)

Let me know if this helped you.

I would say that the old Sony AVC or Voukoder is much better quality than the Magix AVC.

No thanks, this gives me an unacceptable slow down of the render speed. I just compared once again a Magix HEVC 2160p50 VBR NVENC render with a Voukoder HEVC 2160p50 VBR NVENC render. Magix gets an average of 42fps while Voukoder renders with an average of 60fps. Switching to the proposed 32bit (video levels) gives a level shift (because my original is full level) and a dramatical decrease in render speed to just a few fps.

I stay with Voukoder...