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• Requirement to trim video from front-end

  30 octobre 2023, par user20663233

  I have a specific requirement to implement video uploading from the front-end Next Js framework to a third-party application. During this process, it is necessary to trim the first 20 seconds of the video, store the trimmed segment, and subsequently transmit it to the server. While initially considering the utilization of the FFmpeg library for video trimming, I've come to realize that I require server-side support, as hosting FFmpeg locally is not a feasible option. Therefore, I am exploring alternative solutions that would allow me to accomplish video uploads from the front-end while meeting these requirements.

  


• Failed to start broadcast : kurento.MediaPipeline not found (Code:40101, Type:null, Data : {"type" :"MEDIA_OBJECT_NOT_FOUND"})

  30 avril 2020, par Arslan Maqbool

  I am facing this issue when I opened any conference room or any meeting then the camera or microphone or sharedscreen is opened from just 1 or 2 seconds and then
 gone and error message popup in the image below which is attached and in text

  



  I am using open-meeting version 5.0.0-M3 WebRTC

  



  > Failed to start broadcast: Object
> '4f09d0d4-f52f-4731-9e54-124e2da0ca9a_kurento.MediaPipeline' not found
> (Code:40101, Type:null, Data: {"type":"MEDIA_OBJECT_NOT_FOUND"})


  



  

  


• Insert still frames into H.264 video stream

  7 juillet 2021, par Bassinator

  I'm building an application that receives video packets which are encoded as H.264 from Microsoft Teams - I get one packet for each frame of video. Specifications of the packet contents are given here. For every packet I receive, I write the byte contents of the data[] buffer to a file. This resulting file is a playable H.264 encoded video.

  


  I'm trying to handle the scenario of syncing the audio and video streams from a Teams meeting, and inserting a still frame PNG as a "filler" when nobody has their camera on.

  


  I used the following FFMPEG command to generate n number of seconds of H.264 video from the filler frame :

  


  ffmpeg -loop 1 -i video_filler_frame.png -framerate 30 -c:v libx264 -t 2 -vf scale=1920:1080 C:\Code\temp\out.mp4


  


  This generates an MP4 file (H.264 encoded) - as a test in my code, I tried to read the contents of that generated file as a byte array and append them to the video file.

  


  However, this doesn't appear to work. I'm guessing this is because there is some kind of header or other metadata that prevents us from doing the simple solution of just appending the bytes of the next frame.

  


  My question is, how can I achieve what I am trying to do ? I'd like to splice in n number of frames as I am writing the individual packet contents to the file. In other words, for example, consider the following sequence :

  


  

  • Write packets of video to the file

  


  • My code determines that filler frames are needed at some point in this process

    

    • Insert needed number of filler frames to the file

    


    


  


  • Continue writing packets of video as they come in