Apache is Present
PHP 7.4.33 is Present
Since AVideo 2.1 we use exiftool to determine if an video is landscape or portrait
In order to install exiftool type the following command in the terminal:
sudo apt install libimage-exiftool-perl
FFmpeg is not enabled, make sure your FFMPEG is 3.x or greater
FFmpeg has been removed from Ubuntu 14.04 and was replaced by Libav. This decision has been reversed so that FFmpeg is available now in Ubuntu 15.04 again, but there is still no official package for 14.04. In this tutorial, I will show you how to install FFmpeg from mc3man ppa. Add the mc3man ppa:
If you are not using Ubuntu 14.x go to step 2

Step 1

sudo add-apt-repository ppa:mc3man/trusty-media

And confirm the following message by pressing <enter>:
Also note that with apt-get a sudo apt-get dist-upgrade is needed for initial setup & with some package upgrades More info: https://launchpad.net/~mc3man/+archive/ubuntu/trusty-media Press [ENTER] to continue or ctrl-c to cancel adding it
Update the package list.

                                                        sudo apt-get update
                                                        sudo apt-get dist-upgrade

Now FFmpeg is available to be installed with apt:

Step 2

sudo apt-get install ffmpeg
youtube-dl is not enabled

Update the package list.

                                                        sudo apt-get update
                                                        sudo apt-get dist-upgrade

Install pip:
sudo apt-get install python-pip
Use pip to install youtube-dl:
sudo pip install youtube-dl

Make sure you have the latest version:
sudo pip install --upgrade youtube-dl

Add this line in you crontab to make sure you will always have the latest youtube-dl:
0 1 * * * sudo pip install --upgrade youtube-dl
Your videos directory is writable
Your max_execution_time is 7200
Your post_max_size is 512M
Your upload_max_filesize is 512M
Your memory_limit is 2048M
If you do not have AVideo Streamer Site yet, download it here. Then, please, go back here and finish this installation.