VirtualDub Error

[mmkk]

What is the problem .. I use K-Lite Codec Pack But VirtualDub Does not work with avi

See the message

VirtualDub Error
---------------------------
Couldn't locate decompressor for format 'xvid' (unknown)

VirtualDub requires a Video for Windows (VFW) compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Player, are not suitable.

[TJohns]

K-Lite menu - Configure - ffdshow VFW - Codecs

Set your XVID decoder to libavcodec

[titigrom]

K-Lite Codec Pack contains only DirectShow Filters for playing files via a DirectShow Player like Windows Media Player, Media Player Classic, ZoomPlayer, etc. As mentioned by VirtualDub :

VirtualDub Error
---------------------------
Couldn't locate decompressor for format 'xvid' (unknown)

VirtualDub requires a Video for Windows (VFW) compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Player, are not suitable.

As you see, you need a VFW codec in order to use your avi files with VirtualDub, in that case a XviD VFW codec. This is due to the VirtualDub internal way of processing video files.
You can install the original XviD Codec pack which contains a VFW codec too at https://www.videohelp.com/tools/XviD_Codec. Or as TJohns says in ffdshow VFW menu.

[Gavino]

K-Lite Codec Pack contains only DirectShow Filters ...

Not so, it includes ffdshow, which also has VfW filters.
They just need to be configured, as TJohns said.

[mmkk]

Thank you very much