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• Merge two mkv videos in one but put theme in separate tracks

  24 avril 2020, par Silviu Petrut

  I want to make a video player that displays more video streams at the same time using the mkv format.

  



  I build my app so that when it decodes an Mkv video it puts all frames from a cluster in memory, from what I observe when I read a video with only one video stream, every cluster except the last one has equal numbers of frames.

  



  I want to merge tow mkv files in one, but at the same time, I want every cluster from the video to have equal numbers of frames from both tracks.

  



  Is this thing possible using FFmpeg or another tool ?

  


• Queuing up videos for live stream

  5 avril 2014, par Abdul Ali

  Would first like to tell that am new to streaming and ffmpeg.

  Would try to explain scenario as much as possible.

  A web service is intended to receive chunks of video from a user. those chunks need to be simultaneously sent to the web for live streaming for a seamless viewing.

  So the videos need to be queued up for streaming to the web so that it looks like a long single video. and the strict requirement is not to make any temp file on disk.

  Did read something about pipes but am completely alien to that concept as well.

  Kindly tell how / whether this can be achieved from FFMPEG or any other free tool .

  Language used is PHP . The received videos also need to be saved to disk in parallel for new users to see from start.

• How to detect delay or silence in an audio file ?

  15 juillet 2022, par Lynob

  I want to detect silence or delay in audio for a given duration file and remove it. For example, if someone started speaking and then paused for some duration to think.

  


  There's this question but it only detects the silence at the end and doesn't remove it. My colleague suggested sox but I'm not sure if it's the best tool for the job nor how to use it frankly, moreover, the project died in 2015.