HELPP

[Sacul]

when i downloded a video, i can't find that video anywhere.

[Wild Willy]

Why did I point out those 2 things to pay attention to?  They are important.  First of all, you should be using the Companion Application, affectionately known around here as the CoApp.  Use it.  Don't question that.  Use it.  Why?  Because of the comment below the Default download directory.  If you don't use the CoApp, you have no control over where your downloads go.  If you use the CoApp, the Download function (not Quick Download) gives you a file selection dialog which allows you to choose any directory on your system as the destination of the VDH download you are about to launch.  It also lets you change the name of the file you are about to download.  This can be very handy since a lot of web sites cause VDH to choose a rather unwieldy file name as a default.  You are not bound to that choice.  You can change the name to something meaningful.  But never change the file extension VDH chooses.  It's what you're going to get so you shouldn't change that part of the file name.  But the rest is entirely available for you to change.

I'm going to assume you are a relatively new user of VDH.  In that case, you should have this in your toolkit of useful links:

https://groups.google.com/g/video-downloadhelper-q-and-a/c/BzPLK2YyL-s

Inside that web page, the very first link takes you to a tutorial on how to use VDH.  You will likely find that helpful.  The rest of that page is something you should read carefully over time, maybe not all at once, but bit by bit eventually.  So I recommend you bookmark it for easy reference.

Just in case, here's some standard advice I regularly give to new users:

Unsuspecting users have been caught out by a rather stupid design choice made by Google.  The way thread pages are displayed here is controlled by a symbol that appears in the upper right part of every discussion page of Google Groups, the page I cite above being but one among the thousands of examples.  Actually, some shorter pages don't have it.  But almost all pages do.  The symbol looks like an upside down V above a V.  Or it looks like a V above an upside down V.  Hover your mouse over that to make a tooltip appear.  Then click the symbol.  Then keep hovering there to see how the tooltip changes.  Click the symbol a few times to get an idea of what it does.  You want that symbol to look like a V above an upside down V.  If it's the other way, click the symbol.  Once it looks like a V above an upside down V, then you'll be able to read the thread.  Why that thing even exists is beyond me.  I point all this out because every so often, somebody doesn't know about this & it makes my advice here seem baffling.  It's not baffling.  Google Groups is baffling.  This is how to make it all make sense.