chawinn krishna wafeeqa
Francisco Raya
I pulled this chapter together from dozens of sources that were at times somewhat contradictory. Facts on the ground change over time and depend who is telling the story and what audience they're addressing. I tried to create as coherent a narrative as I could. If there are any errors I'd be more than happy to fix them. Keep in mind this article is not a technical deep dive. It's a big picture type article. For example, I don't mention the word microservice even once :-)
Given our discussion in the What is Cloud Computing? chapter, you might expect Netflix to serve video using AWS. Press play in a Netflix application and video stored in S3 would be streamed from S3, over the internet, directly to your device.
Another relevant factoid is Netflix is subscription based. Members pay Netflix monthly and can cancel at any time. When you press play to chill on Netflix, it had better work. Unhappy members unsubscribe.
The client is the user interface on any device used to browse and play Netflix videos. It could be an app on your iPhone, a website on your desktop computer, or even an app on your Smart TV. Netflix controls each and every client for each and every device.
Everything that happens before you hit play happens in the backend, which runs in AWS. That includes things like preparing all new incoming video and handling requests from all apps, websites, TVs, and other devices.
In 2007 Netflix introduced their streaming video-on-demand service that allowed subscribers to stream television series and films via the Netflix website on personal computers, or the Netflix software on a variety of supported platforms, including smartphones and tablets, digital media players, video game consoles, and smart TVs.
Netflix succeeded. Netflix certainly executed well, but they were late to the game, and that helped them. By 2007 the internet was fast enough and cheap enough to support streaming video services. That was never the case before. The addition of fast, low-cost mobile bandwidth and the introduction of powerful mobile devices like smart phones and tablets, has made it easier and cheaper for anyone to stream video at any time from anywhere. Timing is everything.
Building out a datacenter is a lot of work. Ordering equipment takes a long time. Installing and getting all the equipment working takes a long time. And as soon they got everything working they would run out of capacity, and the whole process had to start over again.
The long lead times for equipment forced Netflix to adopt what is known as a vertical scaling strategy. Netflix made big programs that ran on big computers. This approach is called building a monolith. One program did everything.
What Netflix was good at was delivering video to their members. Netflix would rather concentrate on getting better at delivering video rather than getting better at building datacenters. Building datacenters was not a competitive advantage for Netflix, delivering video is.
It took more than eight years for Netflix to complete the process of moving from their own datacenters to AWS. During that period Netflix grew its number of streaming customers eightfold. Netflix now runs on several hundred thousand EC2 instances.
The advantage of having three regions is that any one region can fail, and the other regions will step in handle all the members in the failed region. When a region fails, Netflix calls this evacuating a region.
The header image is meant to intrigue you, to draw you into selecting a video. The idea is the more compelling the header image, the more likely you are to watch a video. And the more videos you watch, the less likely you are to unsubscribe from Netflix.
The first thing Netflix does is spend a lot of time validating the video. It looks for digital artifacts, color changes, or missing frames that may have been caused by previous transcoding attempts or data transmission problems.
A pipeline is simply a series of steps data is put through to make it ready for use, much like an assembly line in a factory. More than 70 different pieces of software have a hand in creating every video.
The idea behind a CDN is simple: put video as close as possible to users by spreading computers throughout the world. When a user wants to watch a video, find the nearest computer with the video on it and stream to the device from there.
In 2007, when Netflix debuted its new streaming service, it had 36 million members in 50 countries, watching more than a billion hours of video each month, streaming multiple terabits of content per second.
At the same time, Netflix was also devoting a lot of effort into all the AWS services we talked about earlier. Netflix calls the services in AWS its control plane. Control plane is a telecommunications term identifying the part of the system that controls everything else. In your body, your brain is the control plane; it controls everything else.
In 2011, Netflix realized at its scale it needed a dedicated CDN solution to maximize network efficiency. Video distribution is a core competency for Netflix and could be a huge competitive advantage.
The number of OCAs on a site depends on how reliable Netflix wants the site to be, the amount of Netflix traffic (bandwidth) that is delivered from that site, and the percentage of traffic a site allows to be streamed.
Within a location, a popular video like House of Cards is copied to many different OCAs. The more popular a video, the more servers it will be copied to. Why? If there was only one copy of a very popular video, streaming the video to members would overwhelm the server. As they say, many hands make light work.
Right now, up to 100% of Netflix content is being served from within ISP networks. This reduces costs by relieving internet congestion for ISPs. At the same time, Netflix members experience a high-quality viewing experience. And network performance improves for everyone.
What may not be immediately obvious is that the OCAs are independent of each other. OCAs act as self-sufficient video-serving archipelagos. Members streaming from one OCA are not affected when other OCAs fail.
To capture Netflix on the computer, you can try EaseUS RecExperts, OBS Studio, etc., to complete the task. If you want to save it on your mobile phone, you can directly download Netflix videos within the app.
It's illegal if you screen record discs on Netflix because you are breaking the copy protection. And speaking of recording Netflix, you need to follow the Netflix Terms of Use and the country's copyright law in which you reside.
Netflix is one of the best video streaming services right now, with some fantastic video series. While it offers to download it for offline viewing, it is only available for smartphones. We often like to download movies and series on the computer and watch them later without the internet. Once you have the video on the computer, you can share it with your family and even cast it on TV, Xbox, and other DLNA devices.
This post will teach you how to screen record Netflix with some screen recording software on Windows 10 PC, Mac, iPhone, and Android. Go on reading to find the method that suits your needs best. To give you a clearer guide, we made a table to compare the effectiveness and ease of use of these methods. Check them out now!
EaseUS RecExperts for Windows is a powerful screen capturing tool that can record whatever is on the screen, such as videos, streaming audio, and so on. If you play the Netflix video in full-screen mode, you can launch this streaming video recorder and select the "Full Screen" option on the main interface to capture what you need.
Besides being a video recorder, it is also a great audio recording software, which allows you to record audio and webcam as well. And you can even set a specific time to start the recording when you have something else to do. Once the recording is complete, it enables you to preview, rename, and trim the video clips directly.
Step 2. Select to record the webcam, system sound, or the microphone. You can see popular streaming sites in this interface, including YouTube, Netflix, Vimeo, Amazon Prime, Disney, Hulu, etc. Then, click a site, and you will be lead to its official website.
Step 3. Go back to EaseUS RecExperts and click the "REC" to proceed. The recording will start after a 3-second countdown. You can see a task bar on your screen. Choose the corresponding button on it to pause or stop the recording.
Step 4. When the recording is over, you will be lead to the preview interface where you can view and edit the recorded videos. Here you can eidt, take screenshots from the recording, or, adjust the volume and playback speed as you like.
When it comes to Mac, there are lots of Mac Netflix screen capture software you can use. We have tested various screen recording programs, and here we pick the top 2 best screen recorders for Mac to share with you.
This best streaming video recorder for Mac allows you to capture Netflix streaming videos with simple clicks. You can capture Netflix movies in full screen or part of the screen. While recording, you also can record your microphone to add narrations to your recordings. What's more, it allows you to record webcam with an internal or external webcam.
If you want to record Netflix without black screen at a specific time, the task scheduler can help. You only need to set the start time, duration of the task, or end time to create your own recording task, and this software will start recording automatically.
Step 1. Open the streaming video that you want to capture. Then launch EaseUS RecExperts to get used to its interface on your Mac. If you want to record the whole screen, you can click the "Full Screen" option. If you want to customize the recording area, hit "Region". Then, select the recording area with your mouse.
Step 3. Once you are satisfied with the settings, go back to the main screen and click the Sound icon. Then, enable the system or microphone sound if you want to record audio and screen at the same time. Click "OK" to ensure the audio options. After that, hit "REC" to start recording.
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