VirtualDub capture filters

13 Aug 2005 1:51 AM

chris

Hello:

I am currently capturing video using VirtualDub 1.6.9 and a Plextor
ConvertX M402U. I am capturing at 320x240 using the Microsoft Mpeg4
codec, and would like to use the "sharpen" filter while capturing the
video. However when I add the filter and try the capture again, it
doesn't seem to be applying the filter. I made sure "Enable RGB
filtering" is checked in the Video menu. Can anybody tell me what I may
be doing wrong??

I have looked around but can't seem to find the solution to why the
filters aren't taking effect while capturing.

Thank you very much.

--
Chris

13 Aug 2005 5:03 PM

Ritz

ch***@groupinfo.com wrote:

> Hello:
>
> I am currently capturing video using VirtualDub 1.6.9 and a Plextor
> ConvertX M402U. I am capturing at 320x240 using the Microsoft Mpeg4
> codec, and would like to use the "sharpen" filter while capturing the
> video. However when I add the filter and try the capture again, it
> doesn't seem to be applying the filter. I made sure "Enable RGB
> filtering" is checked in the Video menu. Can anybody tell me what I may
> be doing wrong??
>
> I have looked around but can't seem to find the solution to why the
> filters aren't taking effect while capturing.

Do you get the same results with 1.6.10? Or with the older 1.5.X
versions? The last few iterations of the bleeding edge version have all
introduced various bugs, though I don't recall this being one of them.

Cheers,

26 Aug 2005 5:02 PM

chris

Yes, I am getting the same results with the new version, 1.6.10. I am
not sure of the cause, but I have found a workaround. I am simply
capturing at 720x480 with no filters applied. Then, running the
captured files through the "resize" and "sharpen" filters using the job
control, in batches. This is working very good with excellent results.
In fact, the end quality is MUCH higher this way than capturing
directly from the Plextor at 320x240.

One thing I'd like to mention incase others read this post, is that the
Plextor has its quirks. When capturing in VirtualDub, you will have to
use the Divx Mpeg-4 codec (the Microsoft Mpeg-4 codec cannot be viewed
in VirtualDub when trying to open and edit files -- just a black screen
appears). I was not able to find a way to get the Microsoft Mpeg-4
codec to work for editing (code is MP4S). Also, before capturing be
sure to go to Video / Capture filter... and after you select the Divx
codec, change the bitrate to 4M Constant (default is 6M Constant which
causes pixellation and really weird things to happen).

Hope this helps others!

--
Chris