[Vegas Pro 23] Mask Position Problem (appears in different location)

chengquan100 wrote on 9/18/2025, 6:32 AM

This issue has been around since 22 and still exists in 23. When I use the Pan/Crop and Mask, the mask position does not match what's shown in the preview window. How can this problem be solved? Could this be an issue with Sony's encoding that can't be fixed?

The demo footage was shot with a Sony camera, and this issue occurs with some of the files.

Honestly, the stability of updates over the past couple of years has been really poor— even the most basic functions are bugged.

In version 23, there's also an issue with videos containing an Alpha Channel — they show abnormal exposure problems. What's worse, even footage downloaded directly from VEGAS Hub's Stock Media has the same problem.

Media Info

General
Format                         : XAVC
Codec ID                       : XAVC (XAVC/mp42/iso2)
Overall bit rate mode          : Variable
Overall bit rate               : 54.5 Mb/s
Frame rate                     : 59.940 FPS

Video
ID                             : 1
Format                         : AVC
Format/Info                    : Advanced Video Codec
Format profile                 : High@L4.2
Format settings                : CABAC / 2 Ref Frames
Format settings, CABAC         : Yes
Format settings, Reference fra : 2 frames
Format settings, GOP           : M=3, N=30
Format settings, Slice count   : 4 slices per frame
Codec ID                       : avc1
Codec ID/Info                  : Advanced Video Coding
Bit rate mode                  : Variable
Bit rate                       : 48.3 Mb/s
Maximum bit rate               : 60.0 Mb/s
Width                          : 1 920 pixels
Height                         : 1 080 pixels
Display aspect ratio           : 16:9
Frame rate mode                : Constant
Frame rate                     : 59.940 (60000/1001) FPS
Color space                    : YUV
Chroma subsampling             : 4:2:0
Bit depth                      : 8 bits
Scan type                      : Progressive
Bits/(Pixel*Frame)             : 0.388
Stream size                    : 60.5 MiB (89%)
Writing library                : AVC Coding
Color range                    : Limited
Color primaries                : BT.709
Transfer characteristics       : xvYCC
Matrix coefficients            : BT.709
Metas                          : 3
Codec configuration box        : avcC

Comments

RogerS wrote on 9/18/2025, 8:24 AM

Thanks for reporting this. It also looks wrong here (Sony X-AVC S UHD file tested)

All ProRes4444 footage isn't working, but you already reported that and already heard that it will be fixed.

chell wrote on 9/18/2025, 10:29 AM

@chengquan100

I find this to be an issue when my preview window is set to PREVIEW or DRAFT. BEST and GOOD seem to show the actual mask and is a proper representation of how it will look in the render.

I'm not sure if this is the same issue, but perhaps try this to rule it out!

bitman wrote on 9/18/2025, 10:41 AM

Weird, I do not seem to have this issue, I almost thought I had the same issue, but then I realized that I had not pressed/enabled the sync cursor symbol (bottom left in the pan/crop) and my cursor had moved causing the effect of having the mask viewing a wrong location. I see that @RogerS does not have his cursor synced as well. I however cannot explain @chengquan100 picture as he has his cursor synced.
Tried both in preview and draft, but cannot simulate the issue.