TikTok is increasing the maximum length of videos from 60 seconds to 3 minutes

TikTok is increasing the maximum length of videos from 60 seconds to 3 minutes.

All three minutes can be recorded, edited, and uploaded directly within the TikTok app. This update gives creators a canvas to work with that’s three times larger than what they had before.

It’s going to be interesting to see what creators do to hold viewers’ attention for longer than a minute. Longer TikTok videos have been in testing with a limited number of creators, so it’s possible you may have encountered…

TikTok is increasing the maximum length of videos from 60 seconds to 3 minutes

How to take backup of a notebook and export it automatically every each 5 minutes?


I want to let Mathematica automatically make a backup of an active notebook and export it to somewhere else (something like Wolfram Cloud or Google Drive) frequently.

"frequently" means whatever it is convenient, like "every 5 minutes", "every time the user manually saves it by Ctrl + S", and so on.

Is there any way to do it? I use Mathematica version 12.0 on Windows 10.

Any information would be appreciated.


I’ve experienced losing the edit on my notebook before by an inevitable accident. I mistakenly evaluated the cell which included infinite loop and I had to force stopping Mathematica from task manager, because it froze. The next time I launched Mathematica and opened the notebook, even my edit I did save by Ctrl + S before the infinite loop started was somehow lost. I want to avoid that by frequent backup and I want to confirm it by automating it.

Jquery ajax loses connection after minutes

Is there a way to get jquery ajax to remain connected until the external execution of code is done?


$ .ajax({
        type: "POST",
        data: "pro=2",
        url:"engine/process.php", // huge data to be processed here
        error: function(){
        success: function(finish){
                //php code is complete

the code works but after some few minutes it returns error alert when the connection is lost.
due to that the php code will not finish processing

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MySQL query is very slow (15 minutes)

I was previously using SQLite for a personal project and due to a constraint of having it available online, I decided to make the switch to MySQL. I converted my database to the MySQL equivalent but I just noticed that performance is VERY poor. This is a 70 mb database with around 600k records total. The query I am running is an INNER JOIN that executes in less than 500 ms using SQLite but the same query using MySQL takes 15 minutes.

SELECT has.tag_id, has.image_id FROM has INNER JOIN image ON image.image_id = has.image_id INNER JOIN person ON person.person_id = image.person_id WHERE person.name="Random Person" 
  • has table has 80k records
  • image table has 290k records
  • person table has 500 records

Here is the structure of the three tables:

create table media.person (     person_id int auto_increment         primary key,     name         text not null )     collate = utf8_unicode_ci;  create table media.image (     id           int auto_increment,     image_id     int  not null,     person_id int  not null,     link         text not null,     checksum     text null,     constraint id         unique (id) )     collate = utf8_unicode_ci;  alter table media.image     add primary key (id);  create table media.has (     id       int auto_increment         primary key,     tag_id   int not null,     image_id int not null )     collate = utf8_unicode_ci; 

Note that I added a primary key to the has table because I suspected it might have been the source of the problem, but it isn’t and SQLite was doing fine without that primary key.

The database uses the InnoDB engine. Here is the output of the mysql --version command:

mysql Ver 14.14 Distrib 5.7.30 

Where could the problem come from? I can understand a small loss of performance because MySQL is heavier than SQLite but certainly not to the point of going from 500 ms to 15 minutes for such a simple query.

Can a scholar repeat healing hands every 10 minutes?

In adventures in Middle-Earth RPG, the scholar class has “Hands of a Healer” ability: “If you can touch a creature, you may expend one Healing Die per action, instantly granting them hit points equal to 1d8 plus your wisdom modifier…If instead you tend the creature for at least 10 minutes…, then you may multiply the 1d8 by your proficiency modifier… “

My question is: Can a scholar repeat healing hands every 10 minutes, spending more healing dices?

What are the repercussions of being able to finish a short rest in only 10 minutes instead of taking 1 hour?

Currently we are playing a horror adventure in D&D 5e. Due to circumstances (beings locked in a haunted house, rooms changing just when we close the doors, etc.), a 1-hour rest is hardly possible.

Our DM ruled that short rests can be as short as 10 minutes. The obvious result is that we can take it. What are other changes that we, both players and DM, should be aware of?

If it matters, party consists of Lore Bard, Vengeance Paladin, Chaos Sorcerer and Divination Wizard, all level 3.