I bought this back in October and is works perfectly. Bought it because I didn't trust all the reviews for adapters.
Hyperkin HD Cable for Wii https://www.amazon.com/dp/B072K2DCFM/ref=cm_sw_r_wa_apa_i_MZXR9X7ZD3SQJ2AS75S6?_encoding=UTF8&psc=1
Hyperkin HD Cable for Wii https://www.amazon.com/dp/B072K2DCFM/ref=cm_sw_r_cp_apa_fabt1_8krXFbH5PM8S4?_encoding=UTF8&psc=1 I'm using this one, really good quality.
Not to be rude, but those generic AV-to-HDMI converters are absolute shiiiiiiiiit. Don't use them for anything.
The Portholic HDMI converter is a 2887410818274108924x better option.
But even then, the Portholic is just a generic Wii HDMI adapter going under thousands of other brands.
And talking from experience, they give good results when they work, but are prone to problems and can even stop working entirely. I had one that didn't even last a day before ceasing any and all function.
If you want a solution to connect a Wii to HDMI, your best bet would be to invest in a Hyperkin HD Cable For Wii.
And even then, though this is the "best" option, these are sometimes known to have vertical lines in the picture, and having the left and right audio channels reversed. If you're willing to overlook and/or risk such things happening, the Hyperkin HD Cable is your best option.
I've recommended this cable that Hyperkin put out a couple years ago to a few people and they all say it works great. Those Wii2HDMI adapters have been flooded by cheap Chinese versions and its 50/50 whether or not you'll get a good one.