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• 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.

    


  


  


• h264_qsv is choppy when live streaming [closed]

  10 septembre 2023, par Devin Dixon

  I am trying to do live streaming of video games using h264_qvs, but is choppy when compared to libx264. Here are some variations of the ffmpeg command I am running :

  


  Variation 1

  


  ffmpeg.exe -y  -hwaccel qsv -i pipe:0 -vf "hwdownload,format=nv12" -c:v h264_qsv -video_size 1920x1080 -preset veryfast  -global_quality 35 -look_ahead 0 -b:v 9000k -maxrate 12000k -bufsize 9000k -pix_fmt yuv420p -r 60 -g 120 -c:a aac -b:a 256k -ac 2 -ar 44100  -af afftdn -f tee -map 0 "[f=flv]rtmp://endpoint.example.com|[f=mp4]C\:\\Users\\me\\savedFile.mp4"


  


  Variation 2 : Moved the scale inside the vf

  


  ffmpeg.exe -y  -hwaccel qsv -i pipe:0 -vf "hwdownload,format=nv12,scale=1920:1080" -c:v h264_qsv -preset veryfast  -global_quality 35 -look_ahead 0 -b:v 9000k -maxrate 12000k -bufsize 9000k -pix_fmt yuv420p -r 60 -g 120 -c:a aac -b:a 256k -ac 2 -ar 44100  -af afftdn -f tee -map 0 "[f=flv]rtmp://endpoint.example.com|[f=mp4]C\:\\Users\\me\\savedFile.mp4"


  


  Variation 3 : Using scale_qsv and removed -pix_fmt yuv420p

  


  ffmpeg.exe -y  -hwaccel qsv -i pipe:0 -vf "hwdownload,format=nv12,vpp_qsv=framerate=60,scale_qsv=w=1920:height=1080" -c:v h264_qsv -preset veryfast  -global_quality 35 -look_ahead 0 -b:v 9000k -maxrate 12000k -bufsize 9000k  -r 60 -g 120 -c:a aac -b:a 256k -ac 2 -ar 44100  -af afftdn -f tee -map 0 "[f=flv]rtmp://endpoint.example.com|[f=mp4]C\:\\Users\\me\\savedFile.mp4"


  


  Variation 4 : Best Variation but still subpar to libx264, lag is 1 minute 30 seconds

  


  ffmpeg.exe -y  -hwaccel qsv -i pipe:0 -vf "vpp_qsv=framerate=60,scale_qsv=w=1920:h=1080" -c:v h264_qsv  -preset veryfast  -global_quality 25 -look_ahead 1 -b:v 9000k -maxrate 12000k -bufsize 9000k  -g 120 -c:a aac -b:a 256k -ac 2 -ar 44100 -f tee -map 0 "[f=flv]rtmp://endpoint.example.com|[f=mp4]C\:\\Users\\me\\savedFile.mp4"


  


  But no matter how I change it, the streaming is choppyl start/stop. What else shoud I be testing here for performance ?

  


• Live streaming and simultaneous local/server video saving with Insta360/Theta 360 camera [closed]

  13 août 2023, par Fornow

  I'm currently working on a project that involves live streaming video from a 360 camera, specifically the Insta360 and Theta models, while also saving the streamed video either locally or on a remote server. I'm relatively new to both live streaming and working with 360 cameras, so I'm seeking guidance on the best approach to achieve this.

  


  My primary goals are as follows :

  


  


  1. Live Streaming : I want to be able to stream the real-time video captured by the 360 camera to a web platform or application, allowing users to experience the immersive 360 content as it happens.

     


  


  2. Simultaneous Video Saving : In addition to live streaming, I also need to save the streamed video. This can either be saved locally on the device running the streaming process or on a remote server. The saved video should ideally retain its 360 nature and high-quality resolution.

     


  


  


  I've been researching various technologies and frameworks like WebRTC for live streaming, but I'm unsure about the compatibility and best practices when dealing specifically with 360 cameras like Insta360 and Theta. Additionally, I'm uncertain about the most efficient way to save the streamed video while maintaining its immersive properties.

  


  If anyone has experience with live streaming from 360 cameras and simultaneously saving the content, could you please provide insights into the following :

  


  

  • Recommended libraries, SDKs, or frameworks for live streaming 360 video from Insta360 or Theta cameras.

  


  • Tips for ensuring the streamed video retains its 360 attributes and high quality.

  


  • Best practices for saving the streamed video either locally or on a remote server while the live stream is ongoing.

  


  


  Any code examples, tutorials, or step-by-step guides would be greatly appreciated. Thank you in advance for your help !