How to create whitelist of specific youtube URLs

[rodbrick]

I want to block all of youtube for my boy but still allow a few specific videos. How can I allow a few specific youtube video URLs while blocking all else? I've tried a few things based on the examples and various forum questions, but all to no avail. Thank you.

[proginosko]

Use something like the following:

youtube.com
+youtube.com/watch?v=XqZsoesa55w

Add as many exceptions as you need, using the + prefix.

[rodbrick]

Thank you for the quick feedback. Unfortunately, this just does not seem to work. A couple of things I noticed: First, the original URL is specified as "m.youtube.com". When I click it when not using Leechblock, it redirects to a regular "youtube.com" URL. I attempted adding both of these in the site block list something like this:

+m.youtube.com/shorts/MyqmCrpRf?blahblahblah
+youtube.com/shorts/MyqmCrpRf?blahblahblah
m.youtube.com
youtube.com

Second, when I save the site block list it rearranges the order, as seen above. Is this a problem? In any case, the video is still being blocked. Any suggestions?

Thank you.

[proginosko]

The reordering makes no difference. LB does that automatically to make it easier to maintain long lists.

You can cover all prefixes (e.g., m.youtube.com) by specifying *.youtube.com.

I tried the following as a test and it seems to work fine:

*.youtube.com
+*.youtube.com/shorts/nNrbSge2DGA

It blocks all YT pages except that one short. Which browser are you using?

[rodbrick]

Still no luck with either Firefox or Chrome. Here's the actual original link causing all the trouble:
https://m.youtube.com/shorts/MyqmCrpRfi8?si=Ut45d4BmTP6bo2Ga

Interestingly, I can set the temporary override option on Chrome and play the video. However, the temporary override does not work on Firefox. It's always blocked. I used the same blocked list in both browsers. See below.

Chrome: Version 138.0.7204.168 (Official Build) (64-bit)
Firefox: 141.0.3 Snap for Ubuntu canonical-002 - 1.0

Blocked list:
.youtube.com
+.youtube.com/shorts/MyqmCrpRfi8?si=Ut45d4BmTP6bo2Ga
+*m.youtube.com/shorts/MyqmCrpRfi8?si=Ut45d4BmTP6bo2Ga
+*youtube.com/shorts/MyqmCrpRfi8?si=Ut45d4BmTP6bo2Ga
addons.mozilla.org
bing.com/videos
rumble.com
tiktok.com

[proginosko]

It looks like YouTube is redirecting the URL. Try each of the following:

+*.youtube.com/shorts/MyqmCrpRfi8

or

+*.youtube.com/shorts/MyqmCrpRfi8?*si=Ut45d4BmTP6bo2Ga (note the wildcard in the middle)

[rodbrick]

The first version worked. I did not try the second one. Than you very much!
Quick question. Is there a text file(s) where the blocked lists are kept that I can edit manually instead of going through the UI? I would like to be able to add exceptions remotely if possible. Thanks again.

[proginosko]

The site lists are not stored in text files, but you can automatically import your site list from a web-hosted text file:

https://www.proginosko.com/leechblock/faq/load-from-url/

So that would be one way to do what you want.