Intel I7-10510U @ 1.8 ghz There is no additional info other than "Intel UHD Graphics" in System Info or Device manager. Driver was updated today to ver 27.20.100.8478 with no relief to problem. I am in 8 bit full mode. The video is .mov 59.963 (VFR) fps progressive, 1920x1080x32, AVC and was filmed on Iphone

Here is a screen shot. I have an input LUT on and a setting of -0.178 on the LIft colorwheel

It appears to be a problem with Intel Graphics acceleration in the program. Turning it of removes the problem. Going to see if an older driver might help. I hope I can get it to work. The acceleration halves the rendering time for me.

What render template are you using. A QSV one?

I'm rendering to Magix AVC/AAC mp4. The line/artifact is visible in the live preview, so it's happening before rendering. It's definitely seems to be an Intel video acceleration issue with Vegas, because it goes away when I disable Hardware Acceleration.

I am using a HD 630 and just set it to do video acceleration in preferences/video (normally I have my GTX 1050 do that). I loaded iPhone 12 max HDR and a FilmicPro clip, added input LUTs that are included with Vegas but couldn't get the line to show up.

I am on driver version 27.20.100.9664

Perhaps it only affects newer GPUs like yours or maybe your media is different.

Can you share MediaInfo for your file? https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/

General
Complete name                            : L:\Gin Mill mtb 2021-11-04\IMG_5138.MOV
Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   0000.00 (qt  )
File size                                : 14.7 GiB
Duration                                 : 1 h 29 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 23.4 Mb/s
Encoded date                             : UTC 2021-11-04 23:58:03
Tagged date                              : UTC 2021-11-05 01:27:44
Writing library                          : Apple QuickTime
com.apple.quicktime.location.ISO6709     : +42.2758-078.6712+479.244/
com.apple.quicktime.make                 : Apple
com.apple.quicktime.model                : iPhone 7
com.apple.quicktime.software             : 13.2
com.apple.quicktime.creationdate         : 2021-11-04T19:58:02-0400

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.2
Format settings                          : CABAC / 1 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 1 frame
Format settings, GOP                     : M=1, N=30
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 1 h 29 min
Bit rate                                 : 23.3 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 59.940 (59940/1000) FPS
Minimum frame rate                       : 54.545 FPS
Maximum frame rate                       : 66.667 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.187
Stream size                              : 14.6 GiB (99%)
Title                                    : Core Media Video
Encoded date                             : UTC 2021-11-04 23:58:03
Tagged date                              : UTC 2021-11-05 01:27:44
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Metas                                    : 3,4
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 h 29 min
Source duration                          : 1 h 29 min
Bit rate mode                            : Variable
Bit rate                                 : 99.2 kb/s
Channel(s)                               : 1 channel
Channel layout                           : C
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 63.6 MiB (0%)
Source stream size                       : 63.6 MiB (0%)
Title                                    : Core Media Audio
Encoded date                             : UTC 2021-11-04 23:58:03
Tagged date                              : UTC 2021-11-05 01:27:44

The above was from the MediaInfo app. The below is from Vegas file properties:

General
  Name: IMG_5138.MOV
  Folder: L:\Gin Mill mtb 2021-11-04
  Type: AVC
  Size: 15.39 GB (15,757,131,822 bytes)
  Created: Wednesday, November 17, 2021, 8:14:46 PM
  Modified: Wednesday, November 17, 2021, 9:06:59 PM
  Accessed: Saturday, November 20, 2021, 11:59:25 AM
  Attributes: Archive

Streams
  Video: 01:29:40.350, 59.963 (VFR) fps progressive, 1920x1080x32, AVC
  Audio: 01:29:40.358, 44,100 Hz, Mono, AAC

Summary
  [TCFM]: 6

ACID information
  ACID chunk: no
  Stretch chunk: no
  Stretch list: no
  Stretch info2: no
  Beat markers: no
  Detected beats: no

Other metadata
  Regions/markers: no
  Command markers: no

Media manager
  Media tags: no

Plug-In
  Name: so4compoundplug.dll
  Folder: C:\Program Files\VEGAS\VEGAS Pro 19.0\FileIO Plug-Ins\so4compoundplug
  Format: AVC
  Version: Version 1.0 (Build 8532)
  Company: MAGIX Computer Products Intl. Co.

@Joseph-Bacon

Search the forum for "variable frame rate" and avail yourself of means to change it to constant for better results with any NLE.

Frame rate mode                          : Variable
Frame rate                               : 59.940 (59940/1000) FPS
Minimum frame rate                       : 54.545 FPS
Maximum frame rate                       : 66.667 FPS

Thanks, John. I will do some research on that. I do need to research the different settings, formats, etc. to start with the best source footage I can. Cheers

Able to duplicate your issue in build 424; I actually thought it was gone.

Bug report filed with the developers and a link to this thread.

@Joseph-Bacon

I converted video to CFR with handbrake, but the problem was not solved. I'll submit a bug report, as well.

This is unfortunately a known problem with the latest Intel GPU drivers which affects certain workflows in VEGAS when Intel GPU is used as the acceleration device. We have alerted them about it, and hope they will provide a fix in their drivers soon.

This is unfortunately a known problem with the latest Intel GPU drivers which affects certain workflows in VEGAS when Intel GPU is used as the acceleration device. We have alerted them about it, and hope they will provide a fix in their drivers soon.

Do you know the newest driver version that doesn't have these problems? I stayed on 27.20.100.9664 and seemed to have avoided it (but am also using a HD630, not UHD630).

This is unfortunately a known problem with the latest Intel GPU drivers which affects certain workflows in VEGAS when Intel GPU is used as the acceleration device. We have alerted them about it, and hope they will provide a fix in their drivers soon.

Yes, if you could provide the last driver version that avoids this problem, I would appreciate it. Thanks

@RogerS  It seems related to specific GPU architectures based on the initial investigations done by Intel. Till now they thought this was limited to HD 530. Based on @Joseph-Bacon's description, he sees it on a i7-10510U, so this has to be a newer GPU than that (the gpu_video_x64.log in C:\Users\<USERNAME>\AppData\Local\VEGAS Pro\19.0 might help identify it, or an app like GPU-Z). We will share this information on to Intel, as the occurrence of this bug on a newer GPU will raise the priority for the fix at their end.

@Joseph-Bacon: Can you provide your GPU information from the VEGAS GPU log, or by installing an application like GPU-Z?

Heading out but will be back soon. Not sure how to access Vegas Video log. If you need more info, please let me know. I will get it when I return. Thanks for your help.

Thanks - that information is all I need. I will forward this to Intel and see if they can provide a driver which can work around this problem.

Thanks