Those HDMI/RCA and RCA/VGA cables might not work the way you want them too, either…
HDMI is a digital format and according to the specification none of the pins are for analog video, so in order for that HDMI/RCA cable to work, whatever you plug the HDMI side into needs to be specially made to allow for some sort of analog input outside of the HDMI spec. I don’t speak German, but google translate tells me that there’s a warning on that product page: “IMPORTANT: This cable is not a converter, so please check in advance whether your connected devices support signal conversion from HDMI to RCA or from RCA to HDMI!”
VGA on the other hand is an analog format, and some VGA cards can generate video at NTSC/PAL timing, but it depends on the VGA card and the VGA/RCA cable needs to be the correct type for the card too, since they can use different pins to generate the signals on since that’s not part of the VGA standard. Additionally, the RGB signals of a VGA connection (if broken out) are not necessarily the same type of RGB signals a TV will accept, and again the VGA signal would need to have to correct desired timing to work right. (I haven’t heard of anything that uses a VGA input to accept NTSC/PAL video, either, in case you’re trying to go that direction, though some might exist, depending on the device. If such devices exist, they’re surely need a cable specific to that device, again because it would be outside of the VGA specs.)
Unfortunately, just because a cable has a connector of one type on one end and a connector of another type on the other end does not mean it actually converts between the intended formats when it comes to video. It’s a bit more complicated than audio cables in that sense.