Some .vobs loaded in Vegas Video cause 50%+ CPU usage - why?

[kmxe]

I've extracted vob files from DVD's and normally dragging them to the timeline in Vegas Video is a piece of cake and I can edit as I please.

However, there have been a couple of vob files that for some reason cause my computer to freeze. I discovered that for some reason the CPU usage would hit and stay at 50%. Sometimes after it would sit on this for a while, it would drop, but any movement i make (ie move the cursor to another spot, zoom in etc) the CPU would then jump again to 50%+.

What would be causing this and what can I do to get around this?

The files play fine in VLC player

[edDV]

It seems like Vegas is converting the source. What is in this VOB?

Are you using DV project settings or something else?

Is there a PAL NTSC mismatch?

[kmxe]

the video specs (as per the Project Media window) shows

Video: 720x480x32, 29.970 fps, Alpha=None, Field Order, Lower field first, MP

Audio: 48,000 Hz, Stereo, MPEG

The Project properties is the NTSC DV settings (720x480, 29.970 fps)

im not sure what else to look at - when i play it back, it sometimes plays the audio but then the video doesnt move and the CPU climbs to 50%. when i stop everything, it goes back down to 0.

Im not sure what to do or look for

[edDV]

You would need to demux the VOB to individual tracks and see what is in there. Either MPeg video or the audio is causing Vegas to recode. It could be a complex DVD with multiple video and/or audio tracks.

[kmxe]

ill give that another go. Its something im pretty sure I tried before, i use DVD decrypter.

If it is the audio/video, what can i do to fix this?

[kmxe]

when i demux the vob, the video is m2v and the audio is ac3. When i drag the ac3 into Vegas it plays fine.

Since Vegas cant play m2v files direct, I used DVD Decrypter again and selected demux, but selected Direct copy of video stream to get a vob file, and also de-selected audio

When i tried to drag the vob file into Vegas, the CPU jumped to 50%+ again.

It seems safe to say that it's the video part thats causing this problem - what can i do to resolve this?

[kmxe]

can anyone help on this? can i convert the vob file to another format to get around this?

[minidv2dvd]

i'd try importing mpg-2 rather than vobs. use vob2mpg on the vobs to convert before opening them in vegas.

[kmxe]

is that not the same as changing the file extention from .vob to .mpg???

[minidv2dvd]

no.

[kmxe]

cool - i'll give this a go