I've been downloaded bonus videos. It seems that every video comes in two formats, avi and wmv. I understand the technical differences and I can play either. The question is which will be the higher quality.

In some cases the difference is clear, but only after downloading both. For example Blanche Bradburry's iw-a1443 video is 1920 X 1080 in wmv and 960 X 540 in avi with file sizes of 269 MB and 24 MB respectively. Both seem to me to be equally crisp. Clearly the wmv is video if you have enough disk space and a large enough monitor.

A different example is Blanca Brooke's its-blancabrooke video. Here both have the same default image size - 960 X 520, but he AVI file is 50% larger than the WMV. I've been told that AVI has better compression so I would expect that to be a higher quality image, but I can' see a difference.

A third case is Dominika C's iw-a1336 video. Here the WMV is 640 X 480 which the AVI is 960 X 520. Since the AVI file is about twice the size, and both seem equally crisp I would select the AVI as the higher quality video.

As you can see, I haven't found a clear choice or a rule for selecting the best. The larger file is often better, but sometimes it appears to just be a waste of space. Also I can't tell the file size until I start downloading. I'd like to avoid downloading every pair of videos and having to compare them one by one.

Any suggestions or insights would be appreciated.

AVI - Traditionally was a lossless format. Usually Uncompressed.
That's why, for the Same Resolution and Bitrate Video, the File size is Much Larger.

But with New Codecs, AVI can also be lossy and Compressed.

"I haven't found a clear choice or a rule for selecting the best. The larger file is often better, but sometimes it appears to just be a waste of space. Also I can't tell the file size until I start downloading. I'd like to avoid downloading every pair of videos and having to compare them one by one."

i have the same questions, but at this moment i just watching the videos online without downloading at all. it's just a bonuses - a now i don't want asking the team for their quality, etc. much more important a bug fixes and usability aspects of the client application (keyboard, player, filters, frames, etc, etc, etc).