VS10+ Preview pane freezes after a few edits

[IanL]

Hi from a new member!

I've searched around, but I haven't found that this has come up before - I hope someone can help:

Nature of the problem: After I've done a few edits to my project, the preview pane stops updating when replaying. It sometimes comes back (catches up) after a few seconds, but usually does not recover. It seems that the replay is still happening, albeit not visibly; the audio carries on regardless, and it is shown by the cursor position after hitting the pause.

The symptoms are repeatable - if replay is restarted from the original point, the display freezes at the same place!

Closing the project and then re-opening, without restarting VS10, does not clear the problem. What I have to do to clear the problem is to stop replay, save the project, close VS10, restart and reopen. Everything is then fine, for one or two edits, then it recurrs.

This never happened with VS9, using the same hardware and files from the same source.

I have uninstalled and reinstalled VS10, with no effect.

Properties of your source files (format, file size, where did you get it?): AVI files from DV Camcorder, size between 3Gb and 100Mb, average 0.5 Gb. Seems to happen with any size source file.

What devices are involved and their mode of connection? PC is running stand-alone.

Project Settings: MPEG 24 bits lower field first, DVD-PAL, 4:3 (Also tried AVI - same problem.)

Output format (file, DVD, VCD, SVCD) : Not relevant, I think, but I shall use DVD when I get there!

PAL or NTSC: PAL

Error Codes (if any) : None

I have the VS10 application on the C Drive, the editing area on a second physical drive and the AVI source files on a third physical drive.

Any suggestions will be most gratefully received

Ian

[TDK1044]

Welcome to the forum.

This feels like a system resource issue. The performance of the timeline in the preview window will depend on many things. Firstly, make sure that you are not running unnecessary background programs which will be drawing on system memory. You may even want to consider setting up a 'video editing profile' on your system. Secondly, make sure your video drivers are up to date. Is your project effects intensive? obviously, video studio has to do a lot more math in the instant playback mode in order to display transitions and titles.

[IanL]

Terry,

Many thanks for your prompt reply. I have tried all your suggestions. Although I had thought I had the latest ATI driver, there was an update, and it seems to have reduced the frequency of the attacks, and improved "auto-recovery".

It is rather strange that the same point in a sequence will show the problem, irrespective of the chosen start point of the replay (that bit I have just discovered).

Also, I would have thought that, with my processor and memory (see profile) there would be no problem, but if no-one else has seen this issue, I suppose it has to be my machine. Or could my camcorder have produced "hiccupy" footage (but then why would it be ok after a re-start)?

Ian

[GuyL]

Ian,

Does the DV file play OK outside of VS?

[Black Lab]

Or, can you play some footage that was previously ok, such as that captured or edited using v9?

[DVDDoug]

AVI files from DV Camcorder, size between 3Gb and 100Mb, average 0.5 Gb. Seems to happen with any size source file.

Are you sure those files are in DV format? They seem a little small for DV, although we don't know the playing time. AVI/DV is about 13GB per hour. (AVI is not a single format. It's a "wrapper" or "container" format that can contain any compression format.)

[IanL]

I'd like to thank everyone who replied; it really got me thinking and scratching around. I followed up all your suggestions, which seemed ok, and then found that my AGP wasn't working.

I re-installed the motherboard AGP driver, and all is now well

So it was a system resource issue all along.

Thanks, guys