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AV Testing for Video Apps

A/V Testing for Video Apps: Things You Should Know

November 18, 2021
Sharon ChuSharon Chu
Sharon Chu

Mobile users today spend hours on audio, video, and social sites — whether that’s creating videos on short-video apps or in a video conferencing call. 

No matter what they’re playing or streaming, no user would prefer an app with recurring performance issues. In today’s digitally-complex world, mobile users anticipate an app's speedy, stable, scalable, and reliable functionality, which can be promised only by the best AV Solutions

Developers are undoubtedly experts in the full-stack development of the popular short-video apps available in the market today. Nonetheless, a tester can play multiple roles in testing the software from a user's point of view, using the product like an average to a brilliant level user. 

Suppose the product is running slow on exceeding web traffic. In that case, there are inconsistencies in the performance levels when used on different operating systems. Additionally, if the video flickers, freezes, or blurs, then the bugs should be fixed before it leaves for a launch. 

Nowadays, it's not just about the usage; user experience and interface also play a significant role. Low performance and usability issues can directly impact your business, and most probably, users can switch to your competitor apps in no time. Hence, it is crucial to think about AV Solutions partners like HeadSpin.

What is Performance Testing, and Why is it Important?

Performance testing is simply a systematic testing approach. It tests the product's stability, scalability, usability, and responsiveness under unfavorable conditions like fluctuating networks, high workload, etc. 

Performance testing helps in getting rid of the glitches before a product's release. Moreover, it effectively ensures the product's scalability and reliability from the developers' and the testers' ends and is a good-to-know factor for your stakeholders. 

The product will undoubtedly have numerous competitors. Therefore, it should be free from all kinds of performance issues that a user might encounter later on to excel in business.

Why Short Video Apps are Prone to Performance Problems

Network latency becomes a major issue that lowers the performance levels of most short-video apps. Software on wireless networks is highly prone to poor signal strength, round-trip delay, transaction success/ failures, bandwidth issues, etc. These factors incur an extensive buffering time and a high response rate which can lead to unhappy users.

In addition, to facilitate an excellent user experience, developers tend to level up the complexity of the video apps, which brings out several performance issues. At the same time, real users utilize it. Most companies ignore that software is meant to perform well rather than just passing the usability testing phase due to the restricted budget, time, or resources. 

Moreover, most of the popular short-video apps run on smartphones. Due to the limited features and characteristics, how advanced the technology is, the performances wouldn't be as expected, as demanded.

How to Test for Common Audio and Video App Issues

AV Solutions partner like HeadSpin tests various video applications like media, entertainment, gaming, and conference calls, by running tests on OTT media devices and testing the DRM-protected content. 

The following issues are more likely to arise in short-video apps. They can be easily rectified with audiovisual performance testing, maintaining a checkmark in some important metrics.

Network issues

A developer should know the various network issues that might hamper the smooth usage of the apps, like bandwidth, signal strength, network switches, etc. The developer should also check if the network's susceptibility to changes impacts the various features in the apps. 

Network latency can be measured using a performance monitor, a traffic analyzer, or an IP scanner to determine if it goes below the expected rates.

Video quality

Video quality is a prime factor in determining the first impression any app would have on its users. The factors that cause blurriness, blockage, changes of brightness, and contrast levels in various apps, should be checked and eliminated during the early stages of development. 

It is impressive that HeadSpin incorporates Mean Opinion Score (MOS), an AI-based model for testing the perpetual video quality. This feature enables testing the app against real-time user activities, providing high-quality video assurance.

Audio Quality

A lag in audio quality 

A lag in the audio or a break in between will not primarily affect an ordinary video. Still, if it's a music concert or fast-motion game, it surely will diminish the overall user experience. So developers need to check the short-video apps for their audio vs. video sync and quality before release. 

HeadSpin's highly advanced Audio-Visual Solutions testing captures the audio from the specific test device via microphones/BlueTooth. The audio then undergoes examination through HeadSpin's exclusive audio-match analysis.

Case in Point

According to the study conducted by AppDynamics in 2019, 55% ) of consumers admit that problems and frustrations with digital services affect them more or for longer than they would like.

Benny Friedman, Director of Flipkart, also stated that nearly half of users say they would abandon an app if it doesn't load in three seconds or less.

Performance is undoubtedly one of the most important factors in determining the success of an app. Thorough performance tests to understand and eliminate issues at the earlier stages of development, as well as post-launch, are necessary for apps to succeed in today’s mobile landscape.


Performance testing verifies and validates the functionality of various core features that enable the flawless operation of short-video apps. The availability of a plethora of short-video apps in the market often confuses the user; however, enticing performance levels could be a primary reason for choosing and sticking to it. 

The sustainability of the KPIs and the major performance metrics enable successful business. Eventually, that drives additional revenue to the company.


1. What are the different approaches of video quality testing?

Frame Level Analysis: It is available for Set-Top Boxes (STB) and provides defined KPIs independent of codecs or protocols. It uses the Media Processing Unit's (MPU) capabilities to record and process live or on-demand video using a non-referenced model.

IP Level Analysis: KPI generation is based on bitstream analysis. It is compatible with both encrypted and unencrypted transmission.

Application-level analysis: It includes high-level KPIs and user-defined scripts. A video application provides insights into the end-user experience.

2. Name some KPIs for testing HDMI video quality

  • Data capture and processing (content preparation)
  • Data Transmission (Content delivery and accessibility)
  • Display and menu (End-Point)
  • IP metrics  

3. What are the key metrics to be measured in video app testing?

  • Bit Rate
  • Buffer fill
  • Lagging Time
  • Lagging Ratio
  • Data consumed
  • Platform Compatibility
  • Subtitles Synchronization & Localization

4. What are the different types of video app testing?

  • Functionality testing
  • Localization testing
  • Usability testing
  • Usability testing
  • Interrupt testing
  • Negative testing

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A/V Testing for Video Apps: Things You Should Know

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