# Pixelation at start of video

**URL:** <https://discussion.mcebuddy2x.com/t/pixelation-at-start-of-video/4330>\
**Category:** Hardware Encoding\
**Created:** [May 27, 2021, 1:32am UTC](https://discussion.mcebuddy2x.com/t/pixelation-at-start-of-video/4330 "2021-05-27T01:32:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![vtwin500](https://discussion.mcebuddy2x.com/letter_avatar_proxy/v4/letter/v/c68b51/32.png) [@vtwin500](https://discussion.mcebuddy2x.com/u/vtwin500)\
**Post date:** [May 27, 2021, 1:32am UTC](https://discussion.mcebuddy2x.com/t/pixelation-at-start-of-video/4330/1 "2021-05-27T01:32:43Z")

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If I use my NVIDIA GPU to encode, the start of the video is pixelated at the bottom portion of the scene for a few seconds. Why would this happen? Using Handbrake with GPU does not do this.

I uploaded my files to the FTP server.

Also, how can I know if the encode is using the GPU or CPU by looking at the log files? What specifically do I look for?

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**Author:** ![Goose](https://discussion.mcebuddy2x.com/letter_avatar_proxy/v4/letter/g/5f9b8f/32.png) [@Goose](https://discussion.mcebuddy2x.com/u/Goose)\
**Post date:** [June 1, 2021, 3:59pm UTC](https://discussion.mcebuddy2x.com/t/pixelation-at-start-of-video/4330/2 "2021-06-01T15:59:46Z")

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> [@vtwin500](#):
>
> how can I know if the encode is using the GPU or CPU by looking at the log files

This topic explains how to check if hardware encoding is being used:

> [@GPU/Hardware Encoding/Acceleration FAQs](https://discussion.mcebuddy2x.com/t/gpu-hardware-encoding-acceleration-faqs/63):
>
> This topic is a compilation of the FAQs related to GPU and Hardware encoding 1. What platforms and devices are supported for GPU encoding MCEBuddy supports Intel (QuickSync), NVidia (NVENC/CUDA) and AMD (VCN/VCE/AMF) which are used for decoding and encoding H.264, H.265/HEVC and AV1. See FAQ 2 for driver requirements To use Intel QuickSync H.264 hardware encoders, Intel Sandy Bridge (1st Generation Core) or newer chipsets H.265 hardware encoders, Intel Broadwell (4th Generation Core) …

Your logs are showing that hardware encoding is being used:

> 2021-05-26T18:33:55 MCEBuddy.AppWrapper.Handbrake → [18:33:55] + encoder: H.264 (NVEnc)  
> 2021-05-26T18:33:55 MCEBuddy.AppWrapper.Handbrake → [18:33:55] encavcodecInit: H.264 (Nvidia NVENC)

> [@vtwin500](#):
>
> the start of the video is pixelated at the bottom portion of the scene for a few seconds

Thanks for [uploading the files](https://discussion.mcebuddy2x.com/t/5076). I checked your _cut MCE GPU.mp4_ video file and I don’t see any pixilation. Playing back using VLC 64bit on Windows 10 and it’s clear. I think it’s an issue with your playback codecs. Attaching the screenshot, left is what I’m seeing, right is what you’ve reported:  
 ![image](https://discussion.mcebuddy2x.com/images/transparent.png)

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**Author:** ![vtwin500](https://discussion.mcebuddy2x.com/letter_avatar_proxy/v4/letter/v/c68b51/32.png) [@vtwin500](https://discussion.mcebuddy2x.com/u/vtwin500)\
**Post date:** [June 1, 2021, 10:12pm UTC](https://discussion.mcebuddy2x.com/t/pixelation-at-start-of-video/4330/3 "2021-06-01T22:12:11Z")

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Hmmm. I also am on Win10 x64 using VLC. Only GPU-encoded via MCE does this.

Thanks for the info.