I love the general concept of using a video to display a segment of your collection like this, but it's a bit too much, especially at over seven minutes.
When thinking of creating a video, consider this: can the same, exact information be conveyed as a series of still images, like a slide show? The answer in this case is yes, they can, in which case, you're taking the "motion" out of motion pictures entirely! It's like buying the best quadrophonic (four channels of sound) or Dolby Digital (seven channels plus subwoofer) stereo system imaginable for the purpose of playing old monophonic (single-channel) recordings, or going to a 3-D movie with an eyepatch over one eye, negating the three-dimensional effect completely - it's wasted bandwidth! There's the zoom in/zoom out thing and the dramatic music, but it's not enough in this case - they don't effectively convey motion, negating the benefit of a moving-image medium. The music is a little overblown for a series of still images, too reminiscent of low-end royalty-free tracks. If you turned down the volume, it feels like a PowerPoint presentation without any narrative. To sum it up, you're spending over seven minutes presenting something that, if I was reading subtitles and viewing still images, I'd be able to complete in about two minutes, tops. Zooming aside, there wasn't any motion shots, so using video is not as effective as it could be. It's barely more interesting than watching a video of a still life scene for seven minutes - thousands and thousands of frames when just one would be perfectly effective!
Please don't think this is a harsh judgment - I love that you're enthusiastic about your collection and want to show it off. I just think that if you went with a series of still images with subtitles/captions, you'd convey the same exact information in a fraction of the time, making it easier for yourself from a production standpoint and for the viewer from the standpoint of how long it would take to absorb all the information you're presenting. They set the pace, fast or slow, rather than having the pace imposed upon them by the medium being used - well, short of using a fast-forward button... Better still, you can go beyond the limits of video resolution, presenting HUGE, highly-detailed images that you just can't have in a video stream, all lovingly photographed by a collector proud of his collection.
Alternately, if you want to get into the whole video thing, then REALLY GET INTO IT! Make action shots, have conversation and sound effects, present something that fully takes advantage of the medium of video and could never be done as a series of stills. Your audience will thank you for it.
Again, and I can't emphasize this enough - it's not a personal attack or a mean-spirited judgment of your work or your collection. I want to see you revel in your collection, but in a way that's at least as exciting for the viewer as it is for the presenter. Do that and you'll inspire others to want to collect cards as well!