Blackened (from Metallica) - Visible Beats

This video shows you the time signatures of Blackened from Metallica. You can see each beats and the different time signatures in real time.
You can suggest what I can do to improve the quality of the video in the comment section.
You can also suggest other musics to be done in this style of video.

This song was suggested by a friend a long time ago.

(I started working on this video as soon as I uploaded the previous video, which means it took me 10 days.)
(This was very hard to make. My program was not made to do live recordings (songs played in real life rather than played by a computer) because a human cannot play at a consistent speed. You might notice some parts of the video getting slightly out of sync. It's because sometimes they played the song slightly faster and sometimes slightly slower. I had to keep changing the bpm to match the song. This is why some of the bpms are not integers. Everything were still slightly out of sync when I was almost done with the video, so instead I measured the exact length of each sections and used maths to calculate the exact bpms. I used the average bpm of some sections instead of constantly changing it, because I just wanted to be done with the video. (I should not have done that, at least not for that long slow 4/4 section. (It should actually be 128 bpm for the first 10 bars then 129.5 for the next 40.)))

(You might notice some inconsistencies with the bpm display in the bottom right corner. I was originally going to write "currently " but then decided to write "BPM Displayed: ", but I forgot to change it everywhere. This is why you see both of them in the video.)
(Oh yeah I almost forgot, I did some actual video editing this time instead of just adding the music and and the fade in and out. I had to edit the first 5/4 measure (after the reversed intro) to be slightly longer because the music was too out of sync. This also means that this part is not in perfect 60 fps like the rest of the video.)

(Should I do Dance of Eternity next? Maybe next year)