I noticed that when I upload some videos to Vimeo or YouTube it has more contrast and highlights/shadows are little bit clipped. So I was wondering do you allways use Studio RGB filter before uploading your videos to Vimeo or YouTube?

BTW, is this problem caused by my browser's Flash Player plugin which displays the video or its caused by Vimeo's conversion?

Yes, you should always use studio RGB with YouTube and Vimeo.

Now, whether you need to apply the conversion filter depends on whether the footage already is in studio RGB or not.

No, its not. I'm used to color grade in Magic Bullet and use its scopes where I see only 0 and 100 IRE, so I color correct my footage according to this..

Then yes, you need to convert it to studio before uploading it to YouTube or Vimeo. Not because they want you to but because the software players on your viewers’ computers expect it that way. You may also watch this video:

Sony Vegas to Youtube Tutorial - A Better Method - YouTube

Thanks for the link. Do you use this method?

Thanks for the link. Do you use this method?

No, I upload directly from Vegas. I showed it to you mostly because it explains the difference between studio RGB and computer RGB.

I use the "better" method detailed in the clip on a regular basis, with the following changes:
Instead of DNxHD, I use Sony MXF as an intermediate format.
The "Web Optimized" checkbox in Handbrake is not important for YT and Vimeo, since they will recode. However, it's critical when creating clips for webserver hosting, and doesn't hurt for YT/Vimeo.

Results are excellent. Handbrake is using state-of-the-art methods for deinterlacing, resizing, and h.264 encoding.

I use the Handbreak method but always get a " your video and audio may be out of sync" messsage from YouTube and many times their encoding destroys the picture...any hints to avoid this?