"2024 Approved  The Dichotomy of YouTube Rights and CC Licenses"

"2024 Approved The Dichotomy of YouTube Rights and CC Licenses"

Thomas Lv13

The Dichotomy of YouTube Rights and CC Licenses

Standard YouTube License vs. Creative Commons

author avatar

Richard Bennett

Mar 27, 2024• Proven solutions

When it comes to YouTube copyright, you may have noticed a cc video on YouTube. While in this article, we will show you the differences between the YouTube standard license and the Creative Commons license.


Searching for an easy-to-use while powerful video editing software to make videos for your YouTube Channel? Here we recommend Wondershare Filmora

Download Win VersionDownload Mac Version ](https://tools.techidaily.com/wondershare/filmora/download/ )

You may also like: 8 Powerful YouTube Video Downloader for Android >>


What is Standard YouTube License?

A standard license is the permit from a competent authority to own or use of something. In terms of internet it is basically based on the permission of using, copying or distributing content that is available online. YouTube is a video sharing website with its own set of rules and regulations in accordance with its license policy.

When a user is uploading a video he has option license options that he can choose from. The first option is “standard YouTube License” which means that you grant the broadcasting rights to YouTube. This essentially means that your video can only be accessed from YouTube for watching purpose and cannot be reproduced or distributed in any other form without your consent. The second type of license is the “Creative Commons” .

In the below video you’ll learn how to set standard YouTube license and cc license:

What is the difference between “Standard YouTube License” and “Creative Commons”

The basic different is that, with a standard license no one can use your video to reproduce as his own work (without clearly marking the video of the original video). However in a standard licence the original video uploader has some right to say “no” to the re-use of his video because the meaning of the video changes altogether.

However, if you select the creative commons license while uploading then the author may use any portions of work of the original author. It is generally permitted to edit, recompile, change or alter the original work except few listed things. These include copyrights of original work and a clear mentioning that the work has been derived from an original source. Moreover, that the original author will not be held responsible for any damages caused by the derivative work. This is how the two licenses differ from each other.

3 Common questions for “YouTube standard license”?

  • Is it illegal for me to share Standard YouTube license video with my friends on Facebook?

It is perfectly alright to share YouTube licensed videos on Facebook or any social media because firstly if sharing was prohibited then probably there wouldn’t have been a share button plug in. Moreover, by clicking share or copy-pasting the URL you are just pointing to the video bearing its original author’s name and URL. Hence, it’s not illegal in any way.

  • Can media companies (such as TV show) feature my video without my permission?

Media companies are generally richly profitable organizations. Hence before using content they need to seek legal permission from the original author of the video. This is especially the case when the owner of the video has used the standard license. It is then mandatory for the media house to take permission from the original video owner who had uploaded the video in the first place.

  • Can I use the videos marked as “YouTube standard license” for a non-profit video?

For a YouTube standard licensed video there is hard and fast legal rule. The original author may claim his work as he has been given certain rights to do so. For a non-profit video yet again you might need to convince him on the fact that you haven’t been gaining anything from usage of his content. So it’s still recommendable to seek permission initially.

You’ll learn “how to legally use copyrighted music, games, and movies on YouTube” from below video:

Download Win VersionDownload Mac Version

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

When it comes to YouTube copyright, you may have noticed a cc video on YouTube. While in this article, we will show you the differences between the YouTube standard license and the Creative Commons license.


Searching for an easy-to-use while powerful video editing software to make videos for your YouTube Channel? Here we recommend Wondershare Filmora

Download Win VersionDownload Mac Version ](https://tools.techidaily.com/wondershare/filmora/download/ )

You may also like: 8 Powerful YouTube Video Downloader for Android >>


What is Standard YouTube License?

A standard license is the permit from a competent authority to own or use of something. In terms of internet it is basically based on the permission of using, copying or distributing content that is available online. YouTube is a video sharing website with its own set of rules and regulations in accordance with its license policy.

When a user is uploading a video he has option license options that he can choose from. The first option is “standard YouTube License” which means that you grant the broadcasting rights to YouTube. This essentially means that your video can only be accessed from YouTube for watching purpose and cannot be reproduced or distributed in any other form without your consent. The second type of license is the “Creative Commons” .

In the below video you’ll learn how to set standard YouTube license and cc license:

What is the difference between “Standard YouTube License” and “Creative Commons”

The basic different is that, with a standard license no one can use your video to reproduce as his own work (without clearly marking the video of the original video). However in a standard licence the original video uploader has some right to say “no” to the re-use of his video because the meaning of the video changes altogether.

However, if you select the creative commons license while uploading then the author may use any portions of work of the original author. It is generally permitted to edit, recompile, change or alter the original work except few listed things. These include copyrights of original work and a clear mentioning that the work has been derived from an original source. Moreover, that the original author will not be held responsible for any damages caused by the derivative work. This is how the two licenses differ from each other.

3 Common questions for “YouTube standard license”?

  • Is it illegal for me to share Standard YouTube license video with my friends on Facebook?

It is perfectly alright to share YouTube licensed videos on Facebook or any social media because firstly if sharing was prohibited then probably there wouldn’t have been a share button plug in. Moreover, by clicking share or copy-pasting the URL you are just pointing to the video bearing its original author’s name and URL. Hence, it’s not illegal in any way.

  • Can media companies (such as TV show) feature my video without my permission?

Media companies are generally richly profitable organizations. Hence before using content they need to seek legal permission from the original author of the video. This is especially the case when the owner of the video has used the standard license. It is then mandatory for the media house to take permission from the original video owner who had uploaded the video in the first place.

  • Can I use the videos marked as “YouTube standard license” for a non-profit video?

For a YouTube standard licensed video there is hard and fast legal rule. The original author may claim his work as he has been given certain rights to do so. For a non-profit video yet again you might need to convince him on the fact that you haven’t been gaining anything from usage of his content. So it’s still recommendable to seek permission initially.

You’ll learn “how to legally use copyrighted music, games, and movies on YouTube” from below video:

Download Win VersionDownload Mac Version

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

When it comes to YouTube copyright, you may have noticed a cc video on YouTube. While in this article, we will show you the differences between the YouTube standard license and the Creative Commons license.


Searching for an easy-to-use while powerful video editing software to make videos for your YouTube Channel? Here we recommend Wondershare Filmora

Download Win VersionDownload Mac Version ](https://tools.techidaily.com/wondershare/filmora/download/ )

You may also like: 8 Powerful YouTube Video Downloader for Android >>


What is Standard YouTube License?

A standard license is the permit from a competent authority to own or use of something. In terms of internet it is basically based on the permission of using, copying or distributing content that is available online. YouTube is a video sharing website with its own set of rules and regulations in accordance with its license policy.

When a user is uploading a video he has option license options that he can choose from. The first option is “standard YouTube License” which means that you grant the broadcasting rights to YouTube. This essentially means that your video can only be accessed from YouTube for watching purpose and cannot be reproduced or distributed in any other form without your consent. The second type of license is the “Creative Commons” .

In the below video you’ll learn how to set standard YouTube license and cc license:

What is the difference between “Standard YouTube License” and “Creative Commons”

The basic different is that, with a standard license no one can use your video to reproduce as his own work (without clearly marking the video of the original video). However in a standard licence the original video uploader has some right to say “no” to the re-use of his video because the meaning of the video changes altogether.

However, if you select the creative commons license while uploading then the author may use any portions of work of the original author. It is generally permitted to edit, recompile, change or alter the original work except few listed things. These include copyrights of original work and a clear mentioning that the work has been derived from an original source. Moreover, that the original author will not be held responsible for any damages caused by the derivative work. This is how the two licenses differ from each other.

3 Common questions for “YouTube standard license”?

  • Is it illegal for me to share Standard YouTube license video with my friends on Facebook?

It is perfectly alright to share YouTube licensed videos on Facebook or any social media because firstly if sharing was prohibited then probably there wouldn’t have been a share button plug in. Moreover, by clicking share or copy-pasting the URL you are just pointing to the video bearing its original author’s name and URL. Hence, it’s not illegal in any way.

  • Can media companies (such as TV show) feature my video without my permission?

Media companies are generally richly profitable organizations. Hence before using content they need to seek legal permission from the original author of the video. This is especially the case when the owner of the video has used the standard license. It is then mandatory for the media house to take permission from the original video owner who had uploaded the video in the first place.

  • Can I use the videos marked as “YouTube standard license” for a non-profit video?

For a YouTube standard licensed video there is hard and fast legal rule. The original author may claim his work as he has been given certain rights to do so. For a non-profit video yet again you might need to convince him on the fact that you haven’t been gaining anything from usage of his content. So it’s still recommendable to seek permission initially.

You’ll learn “how to legally use copyrighted music, games, and movies on YouTube” from below video:

Download Win VersionDownload Mac Version

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

When it comes to YouTube copyright, you may have noticed a cc video on YouTube. While in this article, we will show you the differences between the YouTube standard license and the Creative Commons license.


Searching for an easy-to-use while powerful video editing software to make videos for your YouTube Channel? Here we recommend Wondershare Filmora

Download Win VersionDownload Mac Version ](https://tools.techidaily.com/wondershare/filmora/download/ )

You may also like: 8 Powerful YouTube Video Downloader for Android >>


What is Standard YouTube License?

A standard license is the permit from a competent authority to own or use of something. In terms of internet it is basically based on the permission of using, copying or distributing content that is available online. YouTube is a video sharing website with its own set of rules and regulations in accordance with its license policy.

When a user is uploading a video he has option license options that he can choose from. The first option is “standard YouTube License” which means that you grant the broadcasting rights to YouTube. This essentially means that your video can only be accessed from YouTube for watching purpose and cannot be reproduced or distributed in any other form without your consent. The second type of license is the “Creative Commons” .

In the below video you’ll learn how to set standard YouTube license and cc license:

What is the difference between “Standard YouTube License” and “Creative Commons”

The basic different is that, with a standard license no one can use your video to reproduce as his own work (without clearly marking the video of the original video). However in a standard licence the original video uploader has some right to say “no” to the re-use of his video because the meaning of the video changes altogether.

However, if you select the creative commons license while uploading then the author may use any portions of work of the original author. It is generally permitted to edit, recompile, change or alter the original work except few listed things. These include copyrights of original work and a clear mentioning that the work has been derived from an original source. Moreover, that the original author will not be held responsible for any damages caused by the derivative work. This is how the two licenses differ from each other.

3 Common questions for “YouTube standard license”?

  • Is it illegal for me to share Standard YouTube license video with my friends on Facebook?

It is perfectly alright to share YouTube licensed videos on Facebook or any social media because firstly if sharing was prohibited then probably there wouldn’t have been a share button plug in. Moreover, by clicking share or copy-pasting the URL you are just pointing to the video bearing its original author’s name and URL. Hence, it’s not illegal in any way.

  • Can media companies (such as TV show) feature my video without my permission?

Media companies are generally richly profitable organizations. Hence before using content they need to seek legal permission from the original author of the video. This is especially the case when the owner of the video has used the standard license. It is then mandatory for the media house to take permission from the original video owner who had uploaded the video in the first place.

  • Can I use the videos marked as “YouTube standard license” for a non-profit video?

For a YouTube standard licensed video there is hard and fast legal rule. The original author may claim his work as he has been given certain rights to do so. For a non-profit video yet again you might need to convince him on the fact that you haven’t been gaining anything from usage of his content. So it’s still recommendable to seek permission initially.

You’ll learn “how to legally use copyrighted music, games, and movies on YouTube” from below video:

Download Win VersionDownload Mac Version

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Streamline Your Video’s Acoustic Appeal on YouTube

How To Remove Background Noise from Your Youtube Video

author avatar

Richard Bennett

Mar 27, 2024• Proven solutions

There are few things more annoying to viewers on YouTube than background noise. It is distracting and makes it difficult to engage with the content of a video. If there is noticeable background noise in a video, even a small noise like the faint hum of a computer fan, then it will increase the chances of viewers clicking away. The good news is that these kinds of noises are fairly easy to get rid of.

In order to remove background noise from your video clip, you will first need to create an MP3 of your audio. Then you will be able to take out the unwanted noise in a free program called Audacity and reintroduce your corrected audio into your Filmora project. This article will walk you through the audio editing process.

remove background noise from video

How To Remove Background Noise from Your Youtube Video

Background Noise Removal

Download Win Version Download Mac Version

Open up Filmora, import your clip, and drag it into the timeline. Then, play your clip and listen for background noise. If you hear a noise that you wish to remove move on to the first step of background noise removal .

1. Creating An MP3

If you do not already have it you will need to download VLC Media Player from videoLAN.org. VLC is a completely free media player that can play almost any type of file, is great for converting files, and can even be used as a screen recorder. If you consume a lot of media online then chances are you already have VLC. You could also use is Free Video to MP3 Converter by DVDVideoSoft.

If you choose to use VLC, open it up and select Convert/Save under Media. Select your video in the Open Media window that pops up. After you click Convert/Save you will be able to choose your format, in this case, MP3, under Save as type.

2. Removing Background Noise in Audacity

You can download Audacity for free at Audacityteam.org.

Once you have Audacity use it to open your MP3. Then, find a section of your audio that is silent aside from your background noise and highlight it by clicking and dragging. The idea is to point out to the program exactly what sound is a problem for you so it knows what to remove. If you have trouble finding a significant stretch of background noise that does not also include dialogue remember to record a pause before or after the content of your video next time you film.

With your section of background noise highlighted, go to Effect and then Noise Reduction. Then, click on Get Noise Profile. After that, you will select your entire audio timeline before going back to Noise Reduction under Effect. This time click on OK (the default settings are the best in most situations so you do not need to worry about changing them).

Audacity will remove everything that sounds like the sound profile, eliminating your background noise. Sometimes this method will also dull your dialogue, which can be fixed by selecting your entire track and then going to Effect and Amplify. Increasing amplification will fix any muffling of your audio.

3. Syncing in Filmora

Export your corrected MP3 from Audacity and import it into Filmora. Then, drag it into your music track. Syncing your audio should not be difficult, but you can always use your original audio to help you line it up properly if you need to. Just look for a significant spike in your audio waves in both your MP3 and the original audio and make sure they are right on top of each other.

Then, since you no longer need your original audio, you can delete it. Right-click on your clip and select Audio Detach. Once your audio is on its own track just select it and click delete.

Covering Background Noise

Sometimes background noise is so minor that you do not want to bother going through the process of removing it. In these situations, it may be easier to cover up your background noise than to remove it. This is as simple as dragging a song into the music track of your timeline and adjusting its volume so it is not loud enough to draw attention away from your dialogue. Chances are you want to add background music anyways and this is not even an extra step.

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

There are few things more annoying to viewers on YouTube than background noise. It is distracting and makes it difficult to engage with the content of a video. If there is noticeable background noise in a video, even a small noise like the faint hum of a computer fan, then it will increase the chances of viewers clicking away. The good news is that these kinds of noises are fairly easy to get rid of.

In order to remove background noise from your video clip, you will first need to create an MP3 of your audio. Then you will be able to take out the unwanted noise in a free program called Audacity and reintroduce your corrected audio into your Filmora project. This article will walk you through the audio editing process.

remove background noise from video

How To Remove Background Noise from Your Youtube Video

Background Noise Removal

Download Win Version Download Mac Version

Open up Filmora, import your clip, and drag it into the timeline. Then, play your clip and listen for background noise. If you hear a noise that you wish to remove move on to the first step of background noise removal .

1. Creating An MP3

If you do not already have it you will need to download VLC Media Player from videoLAN.org. VLC is a completely free media player that can play almost any type of file, is great for converting files, and can even be used as a screen recorder. If you consume a lot of media online then chances are you already have VLC. You could also use is Free Video to MP3 Converter by DVDVideoSoft.

If you choose to use VLC, open it up and select Convert/Save under Media. Select your video in the Open Media window that pops up. After you click Convert/Save you will be able to choose your format, in this case, MP3, under Save as type.

2. Removing Background Noise in Audacity

You can download Audacity for free at Audacityteam.org.

Once you have Audacity use it to open your MP3. Then, find a section of your audio that is silent aside from your background noise and highlight it by clicking and dragging. The idea is to point out to the program exactly what sound is a problem for you so it knows what to remove. If you have trouble finding a significant stretch of background noise that does not also include dialogue remember to record a pause before or after the content of your video next time you film.

With your section of background noise highlighted, go to Effect and then Noise Reduction. Then, click on Get Noise Profile. After that, you will select your entire audio timeline before going back to Noise Reduction under Effect. This time click on OK (the default settings are the best in most situations so you do not need to worry about changing them).

Audacity will remove everything that sounds like the sound profile, eliminating your background noise. Sometimes this method will also dull your dialogue, which can be fixed by selecting your entire track and then going to Effect and Amplify. Increasing amplification will fix any muffling of your audio.

3. Syncing in Filmora

Export your corrected MP3 from Audacity and import it into Filmora. Then, drag it into your music track. Syncing your audio should not be difficult, but you can always use your original audio to help you line it up properly if you need to. Just look for a significant spike in your audio waves in both your MP3 and the original audio and make sure they are right on top of each other.

Then, since you no longer need your original audio, you can delete it. Right-click on your clip and select Audio Detach. Once your audio is on its own track just select it and click delete.

Covering Background Noise

Sometimes background noise is so minor that you do not want to bother going through the process of removing it. In these situations, it may be easier to cover up your background noise than to remove it. This is as simple as dragging a song into the music track of your timeline and adjusting its volume so it is not loud enough to draw attention away from your dialogue. Chances are you want to add background music anyways and this is not even an extra step.

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

There are few things more annoying to viewers on YouTube than background noise. It is distracting and makes it difficult to engage with the content of a video. If there is noticeable background noise in a video, even a small noise like the faint hum of a computer fan, then it will increase the chances of viewers clicking away. The good news is that these kinds of noises are fairly easy to get rid of.

In order to remove background noise from your video clip, you will first need to create an MP3 of your audio. Then you will be able to take out the unwanted noise in a free program called Audacity and reintroduce your corrected audio into your Filmora project. This article will walk you through the audio editing process.

remove background noise from video

How To Remove Background Noise from Your Youtube Video

Background Noise Removal

Download Win Version Download Mac Version

Open up Filmora, import your clip, and drag it into the timeline. Then, play your clip and listen for background noise. If you hear a noise that you wish to remove move on to the first step of background noise removal .

1. Creating An MP3

If you do not already have it you will need to download VLC Media Player from videoLAN.org. VLC is a completely free media player that can play almost any type of file, is great for converting files, and can even be used as a screen recorder. If you consume a lot of media online then chances are you already have VLC. You could also use is Free Video to MP3 Converter by DVDVideoSoft.

If you choose to use VLC, open it up and select Convert/Save under Media. Select your video in the Open Media window that pops up. After you click Convert/Save you will be able to choose your format, in this case, MP3, under Save as type.

2. Removing Background Noise in Audacity

You can download Audacity for free at Audacityteam.org.

Once you have Audacity use it to open your MP3. Then, find a section of your audio that is silent aside from your background noise and highlight it by clicking and dragging. The idea is to point out to the program exactly what sound is a problem for you so it knows what to remove. If you have trouble finding a significant stretch of background noise that does not also include dialogue remember to record a pause before or after the content of your video next time you film.

With your section of background noise highlighted, go to Effect and then Noise Reduction. Then, click on Get Noise Profile. After that, you will select your entire audio timeline before going back to Noise Reduction under Effect. This time click on OK (the default settings are the best in most situations so you do not need to worry about changing them).

Audacity will remove everything that sounds like the sound profile, eliminating your background noise. Sometimes this method will also dull your dialogue, which can be fixed by selecting your entire track and then going to Effect and Amplify. Increasing amplification will fix any muffling of your audio.

3. Syncing in Filmora

Export your corrected MP3 from Audacity and import it into Filmora. Then, drag it into your music track. Syncing your audio should not be difficult, but you can always use your original audio to help you line it up properly if you need to. Just look for a significant spike in your audio waves in both your MP3 and the original audio and make sure they are right on top of each other.

Then, since you no longer need your original audio, you can delete it. Right-click on your clip and select Audio Detach. Once your audio is on its own track just select it and click delete.

Covering Background Noise

Sometimes background noise is so minor that you do not want to bother going through the process of removing it. In these situations, it may be easier to cover up your background noise than to remove it. This is as simple as dragging a song into the music track of your timeline and adjusting its volume so it is not loud enough to draw attention away from your dialogue. Chances are you want to add background music anyways and this is not even an extra step.

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

Richard Bennett

Mar 27, 2024• Proven solutions

There are few things more annoying to viewers on YouTube than background noise. It is distracting and makes it difficult to engage with the content of a video. If there is noticeable background noise in a video, even a small noise like the faint hum of a computer fan, then it will increase the chances of viewers clicking away. The good news is that these kinds of noises are fairly easy to get rid of.

In order to remove background noise from your video clip, you will first need to create an MP3 of your audio. Then you will be able to take out the unwanted noise in a free program called Audacity and reintroduce your corrected audio into your Filmora project. This article will walk you through the audio editing process.

remove background noise from video

How To Remove Background Noise from Your Youtube Video

Background Noise Removal

Download Win Version Download Mac Version

Open up Filmora, import your clip, and drag it into the timeline. Then, play your clip and listen for background noise. If you hear a noise that you wish to remove move on to the first step of background noise removal .

1. Creating An MP3

If you do not already have it you will need to download VLC Media Player from videoLAN.org. VLC is a completely free media player that can play almost any type of file, is great for converting files, and can even be used as a screen recorder. If you consume a lot of media online then chances are you already have VLC. You could also use is Free Video to MP3 Converter by DVDVideoSoft.

If you choose to use VLC, open it up and select Convert/Save under Media. Select your video in the Open Media window that pops up. After you click Convert/Save you will be able to choose your format, in this case, MP3, under Save as type.

2. Removing Background Noise in Audacity

You can download Audacity for free at Audacityteam.org.

Once you have Audacity use it to open your MP3. Then, find a section of your audio that is silent aside from your background noise and highlight it by clicking and dragging. The idea is to point out to the program exactly what sound is a problem for you so it knows what to remove. If you have trouble finding a significant stretch of background noise that does not also include dialogue remember to record a pause before or after the content of your video next time you film.

With your section of background noise highlighted, go to Effect and then Noise Reduction. Then, click on Get Noise Profile. After that, you will select your entire audio timeline before going back to Noise Reduction under Effect. This time click on OK (the default settings are the best in most situations so you do not need to worry about changing them).

Audacity will remove everything that sounds like the sound profile, eliminating your background noise. Sometimes this method will also dull your dialogue, which can be fixed by selecting your entire track and then going to Effect and Amplify. Increasing amplification will fix any muffling of your audio.

3. Syncing in Filmora

Export your corrected MP3 from Audacity and import it into Filmora. Then, drag it into your music track. Syncing your audio should not be difficult, but you can always use your original audio to help you line it up properly if you need to. Just look for a significant spike in your audio waves in both your MP3 and the original audio and make sure they are right on top of each other.

Then, since you no longer need your original audio, you can delete it. Right-click on your clip and select Audio Detach. Once your audio is on its own track just select it and click delete.

Covering Background Noise

Sometimes background noise is so minor that you do not want to bother going through the process of removing it. In these situations, it may be easier to cover up your background noise than to remove it. This is as simple as dragging a song into the music track of your timeline and adjusting its volume so it is not loud enough to draw attention away from your dialogue. Chances are you want to add background music anyways and this is not even an extra step.

author avatar

Richard Bennett

Richard Bennett is a writer and a lover of all things video.

Follow @Richard Bennett

  • Title: "2024 Approved The Dichotomy of YouTube Rights and CC Licenses"
  • Author: Thomas
  • Created at : 2024-05-31 12:48:56
  • Updated at : 2024-06-01 12:48:56
  • Link: https://youtube-help.techidaily.com/2024-approved-the-dichotomy-of-youtube-rights-and-cc-licenses/
  • License: This work is licensed under CC BY-NC-SA 4.0.