This is the initial edit, I'll probably make some revisions based on feedback.
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Sorry for all the trouble surrounding the initial YouTube upload. Apparently, when it converted the HD MPG to an H.264 MP4 it created a "scan line" effect over parts of the video (the Lost in Reviews bits already had some scan lines, and the process simply made them worse). I tried using Xilsoft Video Converter to convert it manually to H.264 and it gave me the exact same issue-so it appears to be inherent to the conversion process.
I tried exporting directly to H.264 but YouTube didn't like that either. It seems the "magical" format for uploading HD videos to YouTube is Windows Media, and I've finally posted "Version 1.5" to YouTube (which is really no different from V1 on Vimeo except I exported it in a different format).
It took awhile for me to figure out how to get the aspect ratio settings correct for the exporting process but I finally figured it out and I'll be using the format for all future HD videos including obviously updated edits of this video.
Also, I've been getting in touch with Lost in Reviews about getting ahold of their source video for this so you won't have to see their logo up in the corner or the scan line issues which still exist in the clips from their video.
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Fun Fact: My other major edit, of "Down In It", which was included as an extra feature on This One is on Us's Another Version of the Truth, is actually standard definition rendered in HD. When I edited it originally, I did not realize I had to set up the project a certain way to make it HD. On the plus side, I suppose it made the quality a little more consistent when cutting between HD and SD angles. lol
I still recommend watching that video on YouTube @ 720p just because it has better quality overall at that resolution.
This project was set up as an HD project from the get go, and it meant a little more trouble for me since I don't exactly have a computer set up specifically for HD video editing. I have a descent video card for gaming, but a comparatively weak CPU and 4 GB of RAM which pales in comparison to what our editor for Your World On Fire has (12 GB if I recall correctly). As a result, I can't really watch the whole video until I render it-hence part of the reason for multiple drafts.
The other reason is obviously that I like getting feedback and for me putting it up on the internet is the best way to do that. Other people may pick up on problems that I might not notice.