Those are designed by Boscoyo. (Typically anything ChromaThis or ChromaThat would be Boscoyo... Also DayCor.)
If you are adding to xLights, the download would likely be Boscoyo Studio LLC->Christmas->Singing Elements->ChromaCharacters Christmas Tree 4 Mouth.
Be aware that...
To that I would add xLights sequences with singing face tracks... xlights.info is a good place to search, there are some free ones with the singing tracks. (There are presentations on how to do your own, but best to start with one that is already done.)
I recommend looking for videos that are more recent than 13 years. (Google: audacity xlights video).
You will find:
View: https://www.youtube.com/watch?v=2Vh-jgVowyY
View: https://www.youtube.com/watch?v=PBkva5tFmcY
Probably others, if you refine your search.
It's obviously scraping off other sites and doesn't bother to remember where and be kind enough to tell you that. It would also appear to be a "vibe coded" site... done by AI to "optimize for plausibility" but end up largely to be BS. See that this is obviously a John Storms sequence... but...
For intro/outro/jokes type stuff I've used Showtime Bumpers. There are other popular services, Demented Elf Productions comes to mind but I have not tried them.
See also: https://auschristmaslighting.com/threads/custom-intro-outro-service.16954
Read this post before reading chatroom - the suggestion in chat was to use DDP instead of E1.31, then this whole issue goes away. That's a great answer.
Aha. This is a great clue! A DMX universe holds 512 channels, which is 170 and two thirds of a pixel, so usually 510 channels are put in a packet. Is it possible that you have 510 in some places and 512 in others?
PaulZ is not available enough to be a great choice, though I do not know the technical merits.
I often use commodity end plugs for the ends of strings, and want them to be weatherproof. The plugs for female xConnect ends seal with an O-ring. The plugs for Ray Wu do not, and the little cap...
Start with the easy stuff.
First, make sure the first 2 pixels are actually working. All too often, people have it shifted and think the last ones aren't working when it's the first ones, which comes from testing with solid colors, chases, and other things where the pixels all do pretty much...
Lots of thoughts.
With regard to the matrix on the left:
The simplest thing to do is to just leave the end 2 pixels loose and not tell xLights that you did anything at all. Everything will be fine except that the pixels at the end of the row won't quite be in line with the rest, your viewers...
It will usually work but there are subtle gotchas.
It is a little more difficult to tell which is data in and out
A lot of the seed pixels have V+ marked with white dots instead of V-
Some of the 4-wire ones have 2 kinds of chips alternating, with different pinouts, to make the wiring easier...
Right. In fact after 2022 dead pixel fiasco I have so many dismembered xConnect plugs lying around that they can basically be treated as free. But I thought OPs question wasn't about saving money on the connector, but saving money on the extension cables by making your own. Purpose-made...