No. The #1 chord of a Dominant C7 is F, not C. C7 is the #5 chord.
You would benefit by learning a little chord theory.
The number 1 chord of Thumper's chart certainly looked correct to me. What have I missed?
AudioTrack, I think it is correct too. This is from Google.
C7 stands for a dominant seventh chord, spelled C E G Bb. Specifically, it is a major triad (C E G) with an added minor seventh (Bb). Perhaps I/we should ignore Mr. Halloran's blunders.
Mr. Halloran did not blunder, however he could have been less blunt and given more explanation.
Yes C7 is C-E-G-Bb, BUT C7 is the 5th chord in the F scale, (F-G-A-B-C-D-E), thus C7 is the dominant seventh chord in the key of F, i.e. F is the #1 chord. That is what he was talking about.
Steve, since you keep bringing up Realplayer you may be interested in this:
https://nofilmschool.com/2014/08/mit-extract-sound-audio-silent-video-picture-information#:~:text=Researchers%20at%20MIT%2C%20Microsoft%2C%20and%20Adobe%20recently%20joined,sound%20from%20videos%20that%20have%20no%20audio%20whatsoever.
They finally did extract music from a silent film but as you can guess that is not the method Realplayer used. I stand firm that the nomenclature companies are using is not totally what it seems to be. I supposed if they used " we extract the music from a film and then convert it to MP3" (or what ever format they choose) would be to confusing for the general public so they just use convert. It is what it is.