7D Video and transcoding headache. Please help..

I've been trying to edit a video for about a week now and completely failing.

I'm using a 7D and I am trying to transcode the videos to something that is more edit friendly because my laptop is 8 years old already and can't really handle too much stress. I tried transcoding using MPEG StreamClip with Avid DNxHD codec.

My problem is when I load the transcoded .mov files into Sony Vegas Pro 9, IT HAS NO VIDEO! It's just a blank screen with the audio. Please help me. I've been following every tutorial that I can find but still nothing.

MPEG Streamclip Settings:
Compression: AVID DNxHD
Color Levels: 709
Alpha: none
Resolutions: 1080i/59.94 DNxHD 145 8-bit
Quality: 100%
Frame Size: 1920x1080(unscaled)
Deselected Interlaced Scaling

OS: Windows XP
RAM: 1.5GB
Intel Pentium(R) M Processor 2GHz

I do not believe that there will be any way to use your computer to edit these images without a serious amount of pain.

If you need to do it on this computer, I would make really really small quicktime movies, and then do all the editing with these.

If you need to then do a higher resolution edit when you are done, take the small video edit and the original files and get someone else to put together the edit.

I must admit that I am very impressed that you still have a Pentium M machine for video editing.

It's actually my first time to edit videos and yes, I know the pain that you're talking about. That's why I plan on using my friend's laptop which is more capable.

My problem is the lack of video after transcoding. What's with that? Does it have anything to do with my laptop?

For an underpowered computer you need to go to proxy files. You do all the editing on the proxys and it renders the real files. Vegas 12 has it. Or there are 3rd party solutions. From what you said Vegas doesn't seem to be picking up the Avid Codec. I know they work on 11 and 12 because I use it also but prefer cineform. Get a program called g-spot on the net. Its very nice to see what's up with codecs audio and video for a given file.

Griz

I use Corel VideoStudio Pro X4 and it uses proxy files so you don't need a heavy duty computer, it renders from the original files after you finish editing. It was about $100.00 here is Aus so it's probably half that anywhere else.

if I use programs that uses proxies, do I still need to transcode the files? Because I think that that is my problem.