washed out video.... H.264 issue?

Hi all I have been rendering my video within Premiere and it is washed out a lot compared to the project and even the original. I googled it and it appears it's a H.264 issue but I can't seem to find a solution.
Please forgive me I don't really understand codecs and the like, and I have only recently started taking video on my 7D, but I just want to not have this problem. Obviously others are not having the issue as one look on vimeo shows that. Is it still the best way to render? or are others using something else. It is definately happening post render. I use VLC to watch my videos and it's the same as what I see on my uploaded video. As I mentioned, the original is good, the preview in the project is good, it's when I render it out it gets all washed out.

Any help would be appreciated!

Sample...?

Disclaimer, I am a n00b to DSLR video, so be gentle on the C&C, but whilst you are looking feel free to pick anything I should work on. It's the best way to improve. It's just a quick video of a mates new and very expensive RC plane he is about to maiden. This was just an engine run test.

The original has much more clarity and contrast to it. I don't use any fancy profiles yet, I simply flatten things down in the std settings.

It doesn't matter the rate or setting chosen in Premiere as far as bitrate quality etc, they all seem to be washed out when compared to the original. This looks like there is a semi opaque film over the lens compared to pre render. Not sure how to show you a comparo.

I have been doing some more googling and it appears it has been an issue for a few years now, seems to be a some peoples PC do, some don't, kind of thing...... which sounds a bit odd. Some say it's video card related, others say no.....very confusing!

https://vimeo.com/8216​8288

This is most likely a really old issue with Adobe products outputting Quicktime using mp4 or h.264, the received wisdom is that it's Apple not wanting to "fix" the issue on Windows, I'm skeptical of that but there's been Quicktime problems in Windows for as long as I remember and I've been messing around with this sort of crap since the mid 90s!

This is a workaround from videocopilot.net posted back in 2008:

Using mp4 or h.264 when compressing through QuickTime can make the final video look washed out. This is a common problem that seemed to have no solution… until now. The gamma shift can actually be fixed inside QuickTime Pro without re-compressing your video by simply changing a few settings.

Scrimski at CGtalk.com posted a good walk-through. Thanks!

SOLUTION: After rendering into a QuickTime/h.264 file, open it up in QuickTime and select “Show Movie Properties.” Highlight the video track then click on the “Visual Settings” tab. Towards the bottom left you should see “Transparency” with a drop-down box next to it. Select “Blend” from the menu then move the “Transparency Level” slider to 100%. Choose “Straight Alpha” from the same drop-down and close the properties window and finally “Save.”

thanks for that! I just tried it, but alas I need quicktime pro to change it. It'e un-enabled in the std player. bummer