Chris021@ I confirm! Vegas version 23 is a disaster! I've been struggling for hours to do something simple (open two projects and copy from one to the other) and it doesn't work! I wait 15 minutes for it to open!

20 minutes, and it still hasn't just now copied, but it doesn't do anything anymore, completely blocked. For over 8 hours I haven't been able to copy a part of one project to another!

@vasile-hertely Your problems are different to the subject of this thread so please start a new thread.

Also please provide some info on your system so others may try to help you with your disastrous situation.

Can you provide a typical timeline when it happens, screenshot? Does this happen with every project timeline?

All my videos are from my Panasonic G9. From 1080HD to 10bit 4:2:2 MOV 4K files. Never ever an issue.

It happens randomly in all my projects. 1080p project with Panasonic G9 4K 8bit 30fps MOV files.

How do you want me to provide the timeline ?

@Chris021

How do you want me to provide the timeline ?

Screenshot. Save as jpg and post here.

@Chris021 just a question in general. Why do you capture 4K 8bit in MOV and not MP4?

Looking at your screenshot (thank you), how long is the timeline project? Again, all my projects are created from photos/video from my G9.

@vasile-hertely don't hijack a thread that has nothing to do with your issues. If you have issues, create your own thread, be precise with the information from the POST, including "B" and "C". This is a user forum. If you want to express your displeasure, why not write Magix directly?

Oh, and your user profile is blank. How about adding your computer specs to your Signature.

I don't know why I use MOV. Does it matter?

@Chris021, mp4 might be easier on your computer to edit. The 10bit 422 videos are MOV though.

MOV and MP4 shouldn't matter, it's what's in the containers. My Canon shoots MOV, my Sony shoots MP4.

For troubleshooting if you did have a veg file and a couple of pieces of media others of us could try to see if it crashes. I have two NVIDIA systems myself.

My projects have all big size, like 40Gb.
I have found why I have chosen MOV earlier, see picture.
Is it really better compared to MP4 to edit videos ?

10 bit 422 4K can be hard to edit as no AMD GPUs and only the latest NVIDIA GPUs can decode it. 8 bit 1080p should be easy.

Please see your instruction manual for differences between these formats as what's on the screen doesn't say much. You'd need to look at each file type with Media info to figure out what it is (is their MOV intraframe?)

Here are properties of my MOV file (Vegas 23 informations) :

General
  Name: PANA3792.MOV
  Folder: C:\Users\Chris\Desktop\DREAME Z40\PANA
  Type: AVC
  Size: 492,83 MB (504 654 879 bytes)
  Created: vendredi 19 septembre 2025, 13:52:58
  Modified: vendredi 19 septembre 2025, 09:34:35
  Accessed: lundi 22 septembre 2025, 09:16:27
  Attributes: Archive

Media information
  Stream format: MPEG-4
  Video stream #1
    Video format: AVC
    Resolution: 3840 x 2160 px
    Aspect ratio: 16:9
    Color depth: 8 bit
    Frame rate: 29.970 fps
    Scan type: Progressive
    Bit rate mode: Variable
    Bit rate: 94442730 bps
  Audio stream #1
    Audio format: PCM
    Sampling rate: 48000 Hz
    Channels: 2 channels
    Bit rate mode: Constant
    Bit rate: 1536000 bps

Streams
  Video: 00:00:42,042, 29,970 fps progressive, 3840x2160x32, AVC
  Audio: 00:00:42,042, 48 000 Hz; Stereo, PCM

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 23.0\FileIO Plug-Ins\so4compoundplug
  Format: AVC
  Version: Version 23.0 (Build 278)
  Company: MAGIX Computer Products Intl. Co.

Thanks for this. MediaInfo can give even more detail as to the structure.
https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/

This is 8-bit AVC 30fps in a MOV container. It should be easy to decode I'd think. One odd thing is why it's opening with so4compoupndplug. Can you make sure legacy AVC is unchecked in preferences, file io? Legacy checked in 23 is the same as legacy unchecked in 19.

Here are Media Informations about my Panasonic G9 MOV file :

General
Complete name                            : S:\AOSU WALL LIGHT\PANA\PANA3753.MOV
Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt   2011.07 (qt  /pana)
File size                                : 1.66 GiB
Duration                                 : 2 min 27 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 96.8 Mb/s
Frame rate                               : 29.970 FPS
Encoded date                             : 2025-09-12 16:29:41 UTC
Tagged date                              : 2025-09-12 16:29:41 UTC
com.panasonic.Semi-Pro.metadata.xml      : <?xml version="1.0" encoding="UTF-8" standalone="no" ?> / <ClipMain xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:schemas-Professional-Plug-in:Semi-Pro:ClipMetadata:v1.0"> /   <ClipContent> /     <GlobalClipID>060A2B340101010501010D21130000009D010000085AAC545C1B0A6110570064</GlobalClipID> /     <Duration>4425</Duration> /     <EditUnit>1001/30000</EditUnit> /     <EssenceList> /       <Video> /         <Codec BitRate="100">H264_420_LongGOP</Codec> /         <ActiveLine>2160</ActiveLine> /         <ActivePixel>3840</ActivePixel> /         <BitDepth>8</BitDepth> /         <FrameRate>29.97p</FrameRate> /         <TimecodeType>NonDrop</TimecodeType> /         <StartTimecode>00:00:00:00</StartTimecode> /       </Video> /       <Audio> /         <Channel>2</Channel> /         <SamplingRate>48000</SamplingRate> /         <BitsPerSample>16</BitsPerSample> /       </Audio> /     </EssenceList> /     <ClipMetadata> /       <Rating>0</Rating> /       <Access> /         <CreationDate>2025-09-12T16:29:41+02:00</CreationDate> /         <LastUpdateDate>2025-09-12T16:29:41+02:00</LastUpdateDate> /       </Access> /       <Device> /         <Manufacturer>Panasonic</Manufacturer> /         <ModelName>DC-G9</ModelName> /       </Device> /       <Shoot> /         <StartDate>2025-09-12T16:29:41+02:00</StartDate> /       </Shoot> /     </ClipMetadata> /   </ClipContent> /   <UserArea> /     <AcquisitionMetadata xmlns="urn:schemas-Professional-Plug-in:P2:CameraMetadata:v1.2"> /       <CameraUnitMetadata> /         <Gamma> /           <CaptureGamma>STANDARD</CaptureGamma> /         </Gamma> /         <Gamut> /           <CaptureGamut>BT.709</CaptureGamut> /         </Gamut> /       </CameraUnitMetadata> /     </AcquisitionMetadata> /   </UserArea> / </ClipMain>

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L5.1
Format settings                          : CABAC / 2 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 2 frames
Format settings, GOP                     : M=3, N=15
Format settings, Slice count             : 8 slices per frame
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 2 min 27 s
Bit rate mode                            : Variable
Bit rate                                 : 95.2 Mb/s
Maximum bit rate                         : 106 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.383
Stream size                              : 1.64 GiB (98%)
Encoded date                             : 2025-09-12 16:29:41 UTC
Tagged date                              : 2025-09-12 16:29:41 UTC
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : PCM
Format settings                          : Big / Signed
Codec ID                                 : twos
Duration                                 : 2 min 27 s
Bit rate mode                            : Constant
Bit rate                                 : 1 536 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits
Stream size                              : 27.0 MiB (2%)
Encoded date                             : 2025-09-12 16:29:41 UTC
Tagged date                              : 2025-09-12 16:29:41 UTC

@Chris021 and @RogerS give me a few minutes and I will record a MOV file and see how it performs on my computer. Right now, I have an "up against the wall" project that I have to finish.

While I might not exhibit the same issue, since I won't have a 40GB project. So this brings me back to Chris, does this happen with just a few clips or when there are a lot of them?

Thanks for MediaInfo! I don't see any issues with this footage. It's probably in a MOV container so it can contain PCM audio.

Could you share a screenshot of preferences/ file io?

Please uncheck legacy AVC decoding.

Thanks, I uncheck and let you know with next project this week

@Chris021, does this happen with just a few clips or when there are a lot of them?

I will watch this point, starting new project wednesday

@RogerS @Reyfox Do you belong to Vegas staff ?

@RogerS @Reyfox Do you belong to Vegas staff ?

No they are not, they are users or moderators (all volunteers) just like me. Staff members can be identified by their 3 bars in their icon if I am not mistaken.