What I noticed in my testing is that different videos had different success rates. The Dark Knight trailer definitely had the issue for me, though, so I used it for the public test.

My expectation is that if I fold this into CMC, it will work for some trailers, and fail randomly for others. But ...

Excellent, thanks for you feedback.

I'm surprised that the trailer played the first time. That does align with my own experience, where it played on my development PC, at least in the original folder. Perhaps there's something to the "first time" success.

I'm logged into Youtube on multiple ...

Youtube_Trailer_Test.zip

As before, you may have to open your AV software and permit this download. I did add my developer info to the files hoping that would prevent any false flagging.

You also need to place this in a directory where you have write permissions.

To conduct the test, first run ...

Thanks, I appreciate your faith!

And I guess it was well placed, I seem to have figured it out.

I traced the issue down to the cached cookies. If I copied the cookie file over from the working directory to the non-working directory, magically it began working.

I also happen to have Youtube ...

I've gotten further in my testing, but don't have a solution just yet.

If I use the regular Youtube URL, I can open the full video trailer page (which has all the other sections like comments and other videos surrounding it), but I cannot get it to go into fullscreen mode automatically. So this ...

I just tested it on my HTPC, and after jumping through the hoops to "Run Anyway", it got an error 153 video player configuration error message and it didn't work.

I just tried to download it, and I get the same warning.

What's really sad is that I submitted the files to VirusTotal first, as I always do before hosting files online, and they were scanned through over 70 AV engines and came back clean. Not sure why Microsoft Defender is freaking out, but it's ...

Here's a small test program, I'd appreciate feedback. It should open in fullscreen, playing The Dark Knight trailer, then close automatically when the trailer finishes.

YT_TDK_Trailer_Test.zip

Mission accomplished! It opens in fullscreen, plays the trailer, and closes automatically!

As it is right now, I could have it accept a parameter (the Youtube video ID), and it would be a near seamless replacement for MPC-BE.

But I would much rather fully integrate this functionality into CMC ...