shotcut | cross-platform , open-source video editor | Editor library

I have a video file in MP4 format which supposedly has a 720×576 resolution yet is 786 × 576 according to the Finder on Mac:

As part of this discussion here it's been pointed out to me that this may be because the file is PAL standard video, according to which this is the expected behaviour. I'd like to change this using ffmpeg so that the file actually is no longer PAL standard video but always only 720 pixels in width.

To do so, I've been pointed to this question to find the corresponding ffmpeg command. Yet when I try to run ffmpeg -i weird_video.mp4 -vf "scale=iw*sar:ih,setsar=1" -crf 28 -c:a aac -b:a 80k -ac 1 -movflags +faststart h-264-out.mp4, I get an error message as the actual width of the video seems to be 785 and not 786 pixels as indicated by finder:

I've been using Logwatch for at least 12 years, but since I've moved to Ubuntu 18.04 I've gotten soooo annoyed about the daily e-mail is listing 37 /snap in the filesystem check:

I am working on a drawing application. I summerize the main question to a tiny scenario:

User draws the line A1-B1 and also the point M1. Now user moves the line A1-B1 to a new position A2-B2 while the point M1 also should move with the line (like a rigid body). How can I calculate the new position of point M2?

I know it is possbile with complex calucations on lines or circles conjuction and finally detemrining if the new point is on the right or left of line (this question) etc. But as I want to recalculate live on any steps of dragging, I guess there should be a shortcut and light solution which all modeling softwares use. Is there really a shortcut formula rahter than the line or circle conjuctions?

To summerize the problem again I am looking for a light function with given A1,B1,A2,B2,M1 and looking for M2 position (two separate formula for x and y)

M2 = f(A1,B1,A2,B2,M1)

My guess: I think finding the center and the angle of rotation is one of the best options but I don't know again if there is a shotcut function to find them.

Edit: I prefer to implement it in an online website, so if there is a ready javascript library, it would be helpful, However I am now just looking for the mathematical logic.

My goal: Set up a simple class to add some keyboard macros to Maya at startup.

My Issue: The intended key mappings are not set in the hotkey editor. Editing them manually does work, but as these are default commands, they need to be set programmatically.

-thanks