WMV to MP4 has blank picture

[Pooneil]

Using Windows movie maker, I concatenated several AVI clips into one WMV video. Using Handbrake to convert the newly created MWV file to MP4 results in a file with no picture, only sound. How do get the video to convert properly or is there a way to join the AVI clips without using Windows Movie Maker.

http://pastebin.com/cJARYA81

[Deleted User 13735]

There are many free ways to join AVI files to import a single AVI into Handbrake.
WMM is not needed, and intermediate conversion to WMV goes against better judgment.

[Pooneil]

Great. Have a suggestion on an easy method to use?

[GregiBoy]

AVIDemux works well and is freely available on the Internet

[Pooneil]

Thanks, GregiBoy. I'll try that. It looks like it will do what I want.

[Pooneil]

Avidemux woks very well with a modest learning curve. I am sure it will do more than what I am doing now, but it does what I wanted with ease. Thanks again.