Video services have gained immense popularity in the past few years. They can be broadly classified into two categories: Video Conferencing and Video Streaming aka broadcasting. Their demand has skyrocketed in the last few months when the world is under siege due to the prevailing pandemic.
Live video conferencing tools, like MS teams, Zoom, Google Hangouts, Skype, etc, are being used extensively these days for conducting meetings and scheduling web-based conferences.
The education field has started depending highly on various eLearning platforms, besides leveraging the video conferencing tools.
Equipped with smartphones and access to the internet, the rate of consumption of video on demand is overwhelming too, be it sports, music, movies, news, or documentaries. It gives the flexibility to watch videos on the move at the time of your choice.
The surge in demand and usage, in general, puts a high load on the content delivery and management infrastructure. In order to appease the current customer base and entice new ones, the product and service providers need to maintain & upgrade current infrastructure, besides introducing new measures to provide consistent and high-quality services. This gives rise to the need of having a good video testing process in place.
Why do we need video testing?
Imagine a scenario when an important point is being discussed in a meeting/class and the video gets paused, or the picture gets pixelated, or the voice is not clearly audible. It adversely impacts the whole user experience.
The performance of the whole ecosystem of video services is vital for continued customer satisfaction and loyalty. Like every other technology, video testing is extremely important to ensure that the end-user gets maximum out of his/her investment in the tech he/she paid for.
This task is considerably tough keeping in mind the rate at which the hardware (mobiles, televisions, tablets, etc.) are upgraded and the content demand keeps going up.
The video content is dynamic in nature, coupled with the wide range of receiving hardware makes it a challenging task. Hence, it is imperative to have a well-outlined video testing process in place.
Video streaming performance metrics
Video testing also aids in analyzing the impact of actual usage during peak times by measuring various performance metrics, thereby ensuring that the end-users can have an uninterrupted experience. These metrics form the baseline for video testing.
- Bit Rate: The pixelated picture and impeded speech are classic symptoms of low quality video streaming. Take a look at the following snapshot of stills from a video. It is easy to spot the difference in quality of both.
Ever wondered why this happens? The culprit is “Bit Rate”. The video quality is directly proportional to the bit rate. Higher the bit rate, better the quality, consequently larger the video file size.
Bit rate is measured as the number* of bits transmitted per second*. A higher bit rate does not necessarily translate into better quality viewing on the receiver’s end if the hardware is not equipped to process that.While bit rate can determine the quality of audio-visuals in terms of looks, it has another comrade called, Frames per second (FPS), which determines the smoothness of the video.
Just imagine watching an intense sports live and the player moves around in spasmodic choppy motion because the frame rate was not ideal. Higher frame rate means smooth videos with crisp detailing.
- Buffer time/fill: Quite often we see the video buffering message on our screens before it can start playing.
Have you ever thought about why this happens? Internet speed and reliability of connection is the prime reason. If the internet connection is slow, then the local buffer is filled with data before playing the video, so that there is no lag in the stream.Buffer fill is the time taken for the video file to fill the buffer. Longer the time is taken for buffering, a higher chance of having a dissatisfied end user.
- Lag length: So now the buffer is full and the video starts playing. All goes well as long as the download rate matches pace with the bit rate.
But the moment, buffer starts getting drained, the video stalls and re-buffering starts. This leads to a lag in streaming.
Commonly known as time taken for re-buffering, this phenomenon is measured by lag length. Lag length is the time taken to refill the buffer.
- Play Length: Play length is the measurement of data streamed by the data center and received by the end-user. There might be users who consume volumes of video data. Play length helps in understanding the capacity of the infrastructure, enhancement planning, and streaming demand patterns.
- Lag Ratio:This is the ratio of waiting time**:** watching time. The moment this ratio is skewed with waiting time exceeding watching time by a high degree, it is time to revisit and fine tune the setup.Read for more about this blog click here.video testing
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Ensures that the web applications or the developed software are accessible to people with disabilities, such as blindness, cognitive disabilities, hearing problems, etc.
The objective is to ensure that these people have opportunities to show their talents and achieve success in life; This accessibility of web content is not hampered by barriers.Also Read: Software Testing Company in the USA Guidelines WCAG shortlyThe importance of WCAG compliance tests can be easily understood from their framed guidelines.
These are effectively based on 4 main principles or p.o.u.r, which guarantees that web content is easily:Perceptible in his presentation,Operable to facilitate easy navigation through the UI,Understandable to make the user interface accessible andRobust so that the content accessibility of the user interface is valid for the agents of the varied users.Therefore, the certifications that guarantee the compliance tests of WCAG show the compliance of a website to the defined verifiable criteria.
The range of accessibility increases enormously and the threat of a demand for websites accessibility is also avoided.
In general, however, obtaining an "AA" test certification is considered sufficiently adequate.Also Read: Software Testing Company in the USA WCAG compliance testsThere are two ways in which this compliance test can be done.
Are:Automated Web Accessibility Compliance Tests: There is a set of commercial open and automated source tools that are widely used in the process of ensuring that websites are accessible and comply.
When most people answer the question “Why software should be tested?”, the responses might include making sure the product works as intended, that the solution is secure and complies with certain policies, can satisfy the end-users, etc.With so much software released every day, testing is a phase that cannot be left out.
Here are only a few reasons why:it detects bugs and errors;it checks the adaptability of the product;it helps to avoid risks and extra costs;it earns customer loyalty.In this light, application testing is like health insurance – you don’t think you need it until you receive a pretty hefty bill from the hospital.Based on the World Quality Report and Software Testing Genius the universal recommendation for the budget spent on software testing is not less than 25% of development costs.
However, it may depend on many factors like the size of the project, software development methodology, or types of software testing you plan to use, etc.
There is a vast deal of software testing types and classifications that may be quite confusing for business stakeholders and Product Owners.That is why today you find out about the common types of software testing that we use on a daily basis that helped us get dozens of amazing products off the ground!So, let’s dig deeper and find out more.Read more...
Besides, an insecure mobile app can be a loophole for cyber hackers that intrude into a user's system and hack a smartphone overall.
Almost all apps refer to servers that are vulnerable to the same types of cyberattacks as desktop and web apps.
However, mobile apps have better security measures and a smaller attack surface.
But there are principal security issues we should pay attention to: Local data storage.
Improper usage of APIs system by an app can cause data breaches and other security issues.
Smartphones connect with various networks regularly.
