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• Using FFmpeg in ios10, xcode8

  21 novembre 2016, par Juvia.Xin

  I downloaded kxmovie in github and use it in my project as a component. I can successfully build the kxMovieExample. But in my project, I encounter one error, that is ’libavformat/avformat.h’ file not found, although I have put all ffmpeg headers in header search path and all libs in library search path.

  One thing to mention is that I have deleted libavutil/time.h because xcode can’t link the system time.h and I have not found any usage of libavutil/time.h in the project. Is it possible that the deletion cause the error above ? Or any other possiblities ?

  Thanks for any help.

  the header search path

  the library search path

• Android OpenCV trim .mp4 video file

  2 février 2016, par Alex

  I am developing an app for Android platform using Unity 3d. My task is to trim .mp4 video file. So, for this I decided to implement a third party lib and use it from Android native Activity via plugin for Unity.

  Here are some options I have already tried, but the did not work :

  1. mp4parser lib. I know it is open source, but I haven’t found any working example of using the source code of this lib in Android project. I am always getting a runtime error (attribute ftyp not found). Using this lib in form of .jar works from Eclipse Android project, but fails in Unity 3d : when calling MovieCreator.build method this lib throws a NullReferenceException in BoxPropertyImpl.class.
  2. ffmpeg lib. I have already found a working project. I am able to trim the video from Android activity, but when returning to Unity player it freezes forever.

  My next option is to try OpenCV lib. Have anyone made video trimming with this lib on Android platform ?

  Thanks for any help !

• Implementing Live Streaming Webinar Architecture - Need Guidance

  21 septembre 2023, par vishnugpl

  Question : I'm working on a project to implement a live streaming webinar platform, and I'm looking for guidance on the architecture and technologies to use. I have some specific requirements and constraints, and I'd appreciate any advice or pointers on how to get started.

  


  Context :
I'm tasked with building a live streaming webinar platform from scratch for our organization. Here are some key requirements and constraints :

  


  


  1. Live Video Streaming : We need to support live video streaming for
webinars, workshops, and conferences. Low latency is crucial for
real-time interaction between presenters and attendees.

     


  


  2. Scalability : The platform should be able to handle a large number of concurrent attendees, potentially thousands or more,
without compromising performance.

     


  


  3. Security : Security is a top priority. We need to ensure that only authorized users can access the webinars, and we must protect
against unauthorized recording or distribution of the content.

     


  


  4. User Interaction : Attendees should be able to ask questions, participate in polls, and interact with presenters in real-time.

     


  


  5. Recording and Playback : We also want to provide recorded versions of past webinars for on-demand viewing (HLS).

     


  


  


  Current Tech Stack :

  


  

  • Frontend : React

  


  • Backend : Node.js with Express

  


  • Database : MongoDB

  


  • Cloud Hosting : AWS

  


  


  Questions :

  


  


  • What technologies or services are best suited for handling live video streaming with low latency ?

    


  


  • How can I ensure scalability in terms of both video streaming and handling a large number of users ?

    


  


  • What security measures should I consider to protect the content and user data ?

    


  


  • Are there any recommended frameworks or libraries for building interactive features like real-time chat and polling ?

    


  


  • What's the best approach for recording and serving on-demand webinar content ?

    


  


  


  Additional Information :

  


  


  • Budget is a consideration, so cost-effective solutions are preferred.

    


  


  • Any open-source or third-party tools that can simplify development are welcome.

    


  


  • I have experience with AWS, but I'm open to other cloud providers if they offer advantages for this project.