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[Online Education] Optimization efforts to respond to the competitive environment and maximize viewer experience
Date : 2021-05-13Views : 197
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With the most aggressive introduction of video platforms, Korea's online education sector offers world-class services ranging from elementary, 

middle, high, and adult education, with companies aiming for Edu-tech-based knowledge companies. On the other hand, competition is very intense.


⁠In addition to the fierce environment where sales and traffic are shifted around top-tier instructors, efforts to link high-tech technologies such as AI and improve the viewer experience continue constantly.


⁠Online education businesses require the development of dedicated apps that contain their own unique business strategies. And video playback, 

one of the cores of your business strategy, requires sufficient support from video player SDKs and video platforms optimized for dedicated apps.


  • New special or event lectures are provided strategically with higher resolution. Also, the setting and application of the encoding profile should proceed quickly according to the opening time of the lecture. This process requires API development support for regular use.

  • ⁠According to the API developed according to the requirements, the video playback option is updated in the viewer app. Includes logic to invoke images encoded in new profiles, web token modifications required for video playback, and image quality selection options.

  • ⁠We also explore the possibility and alternative of frame drop based on user viewing environment analysis (OS, browser, player version) data collected from video platforms.

  • ⁠It also analyzes the original image to find the optimal bit rate and resolution.


On the surface, the Internet lecture service seems to be the same as it was 20 years ago when it was represented by video player, encoding, and 

CDN service management. However, as the app-based viewing environment becomes more popular, more detailed responses are required.


  • ⁠OS, such as IOS, Android, and Windows, and each browser update also affects small media elements such as captions. As a result, if the webVTT subtitle specification does not apply as expected in IOS and Android, or looks different from the laptop(PC), it will be optimized with fine-tuning on the Video Player SDK.

  • Sometimes it is necessary to inquire about whether the subtitle font appears to be rolled or HYheadlineM, and to verify its licensing conditions.

  •  ⁠If the viewer device randomly selects a hardware codec or software codec, there is room for viewing failure. It is primarily affected by the update of that mobile device.

⁠Content security issues are still a sensitive issue. Download services for offline learning other than streaming services continue to be maintained, and non-DRM recording prevention, duplicate playback prevention, and recording capture prevention are recognized as basic requirements for content. Recently, however, the issue of abnormal use is emerging through bi-directional video solutions and various browser extensions (e.g Chrome Extensions.)

  • However, most of the features are one of the various applications that Internet lecture service viewers are free to use for other purposes. Platform updates for blocking these software may also require close consultation with Internet lecture service customers.


⁠Through continuous monitoring, it is also necessary to find and supplement improvements in the shortest time.

  • Audiovisual errors are represented by a variety of error codes, and the video platform provides an environment 

    in which other monitoring data items can be linked to determine the cause. For example, if there are more 8805 error 

    codes than duplicate playback blocking, verify the corresponding log data and SDK-applied versions, and reverse track 

    the corresponding app updates to determine the cause. Also, monitoring tasks such as improving problems while 

    rechecking app renewal can be carried out.


⁠In addition, various issues related to service improvement continue to occur. Introduction of compressed codecs (H.265/HEVC), 

HTML5-based video players for flexible UX, and Multi-DRM introduction. This is due to the recent trend in line with the 

UX improvement demand, which is increasing the proportion of Tablet usage in the Internet lecture viewing environment. 


 ⁠These requirements should cover the device, OS environment, and the ease of development of APP. Catenoid services 

include consultations on service optimization tailored to these changes in the online environment.

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